source: trunk/src/user32/edit.cpp@ 6254

Last change on this file since 6254 was 6254, checked in by sandervl, 24 years ago

edit control bugfix (selected text); key translation additions; clipboard memory handle translation added
File size: 143.0 KB
Line 
1/* $Id: edit.cpp,v 1.43 2001-07-08 15:51:41 sandervl Exp $ */
2/*
3 * Edit control
4 *
5 * Copyright David W. Metcalfe, 1994
6 * Copyright William Magro, 1995, 1996
7 * Copyright Frans van Dorsselaer, 1996, 1997
8 *
9 * Copyright 1999 Christoph Bratschi
10 *
11 * Corel version: 20000513
12 * (WINE version: 991212)
13 *
14 * Status: complete
15 * Version: 5.00
16 */
17
18/* CB: todo
19 - EN_ALIGN_LTR_EC, EN_ALIGN_RTL_EC -> undocumented notifications
20 - text alignment for single and multi line (ES_LEFT, ES_RIGHT, ES_CENTER)
21 new in Win98, Win2k: for single line too
22 - WinNT/Win2k: higher size limits (single: 0x7FFFFFFE, multi: none)
23 SvL: Limits removed. EM_SETTEXTLIMIT has no effect in NT4, SP6 (EM_GETTEXTLIMIT
24 only returns that value); limits are simply ignored, no EN_MAXTEXT is ever sent)
25 - too many redraws and recalculations!
26*/
27
28#include <stdlib.h>
29#include <os2win.h>
30#include <string.h>
31#include "controls.h"
32#include "combo.h"
33
34#define DBG_LOCALLOG DBG_edit
35#include "dbglocal.h"
36
37#ifdef DEBUG
38char *GetMsgText(int Msg);
39#endif
40
41#define BUFLIMIT_MULTI 65534 /* maximum buffer size (not including '\0')
42 FIXME: BTW, Win95 specs say 65535 (do you dare ???) */
43#define BUFLIMIT_SINGLE 32766 /* maximum buffer size (not including '\0') */
44
45#ifdef __WIN32OS2__
46#define BUFLIMIT_SINGLE_NT 0x7FFFFFFF
47#endif
48//#define BUFLIMIT_MULTI 0xFFFFFFFE
49//#define BUFLIMIT_SINGLE 0x7FFFFFFF
50
51#define BUFSTART_MULTI 1024 /* starting size */
52#define BUFSTART_SINGLE 256 /* starting size */
53#define GROWLENGTH 64 /* buffers grow by this much */
54#define HSCROLL_FRACTION 3 /* scroll window by 1/3 width */
55
56/*
57 * extra flags for EDITSTATE.flags field
58 */
59#define EF_MODIFIED 0x0001 /* text has been modified */
60#define EF_FOCUSED 0x0002 /* we have input focus */
61#define EF_UPDATE 0x0004 /* notify parent of changed state on next WM_PAINT */
62#define EF_VSCROLL_TRACK 0x0008 /* don't SetScrollPos() since we are tracking the thumb */
63#define EF_HSCROLL_TRACK 0x0010 /* don't SetScrollPos() since we are tracking the thumb */
64#define EF_VSCROLL_HACK 0x0020 /* we already have informed the user of the hacked handler */
65#define EF_HSCROLL_HACK 0x0040 /* we already have informed the user of the hacked handler */
66#define EF_AFTER_WRAP 0x0080 /* the caret is displayed after the last character of a
67 wrapped line, instead of in front of the next character */
68#define EF_USE_SOFTBRK 0x0100 /* Enable soft breaks in text. */
69
70typedef enum
71{
72 END_0 = 0, /* line ends with terminating '\0' character */
73 END_WRAP, /* line is wrapped */
74 END_HARD, /* line ends with a hard return '\r\n' */
75 END_SOFT /* line ends with a soft return '\r\r\n' */
76} LINE_END;
77
78typedef struct tagLINEDEF {
79 INT length; /* bruto length of a line in bytes */
80 INT net_length; /* netto length of a line in visible characters */
81 LINE_END ending;
82 INT width; /* width of the line in pixels */
83 struct tagLINEDEF *next;
84} LINEDEF;
85
86typedef struct
87{
88 HANDLE heap; /* our own heap */
89 LPSTR text; /* the actual contents of the control */
90 INT buffer_size; /* the size of the buffer */
91 INT buffer_limit; /* the maximum size to which the buffer may grow */
92 HFONT font; /* NULL means standard system font */
93 INT x_offset; /* scroll offset for multi lines this is in pixels
94 for single lines it's in characters */
95 INT line_height; /* height of a screen line in pixels */
96 INT char_width; /* average character width in pixels */
97 DWORD style; /* sane version of wnd->dwStyle */
98 WORD flags; /* flags that are not in es->style or wnd->flags (EF_XXX) */
99 INT undo_insert_count; /* number of characters inserted in sequence */
100 INT undo_position; /* character index of the insertion and deletion */
101 LPSTR undo_text; /* deleted text */
102 INT undo_buffer_size; /* size of the deleted text buffer */
103 INT selection_start; /* == selection_end if no selection */
104 INT selection_end; /* == current caret position */
105 CHAR password_char; /* == 0 if no password char, and for multi line controls */
106 INT left_margin; /* in pixels */
107 INT right_margin; /* in pixels */
108 RECT format_rect;
109 INT region_posx; /* Position of cursor relative to region: */
110 INT region_posy; /* -1: to left, 0: within, 1: to right */
111 EDITWORDBREAKPROCA word_break_procA;
112 INT line_count; /* number of lines */
113 INT y_offset; /* scroll offset in number of lines */
114 BOOL bCaptureState; /* flag indicating whether mouse was captured */
115 BOOL bEnableState; /* flag keeping the enable state */
116 HWND hwndListBox; /* handle of ComboBox's listbox or NULL */
117 /*
118 * only for multi line controls
119 */
120 INT lock_count; /* amount of re-entries in the EditWndProc */
121 INT tabs_count;
122 LPINT tabs;
123 INT text_width; /* width of the widest line in pixels */
124 LINEDEF *first_line_def; /* linked list of (soft) linebreaks */
125 HLOCAL hloc; /* for controls receiving EM_GETHANDLE */
126} EDITSTATE;
127
128
129#define SWAP_INT32(x,y) do { INT temp = (INT)(x); (x) = (INT)(y); (y) = temp; } while(0)
130#define ORDER_INT(x,y) do { if ((INT)(y) < (INT)(x)) SWAP_INT32((x),(y)); } while(0)
131
132#define SWAP_UINT32(x,y) do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)
133#define ORDER_UINT(x,y) do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)
134
135/* used for disabled or read-only edit control */
136#define EDIT_SEND_CTLCOLORSTATIC(hwnd,hdc) \
137 (SendMessageA(GetParent(hwnd), WM_CTLCOLORSTATIC, \
138 (WPARAM)(hdc), (LPARAM)hwnd))
139#define EDIT_SEND_CTLCOLOR(hwnd,hdc) \
140 (SendMessageA(GetParent(hwnd), WM_CTLCOLOREDIT, \
141 (WPARAM)(hdc), (LPARAM)hwnd))
142#define EDIT_NOTIFY_PARENT(hwnd, wNotifyCode) \
143 (SendMessageA(GetParent(hwnd), WM_COMMAND, \
144 MAKEWPARAM(GetWindowLongA(hwnd,GWL_ID), wNotifyCode), (LPARAM)hwnd))
145
146/*********************************************************************
147 *
148 * Declarations
149 *
150 */
151
152/*
153 * These functions have trivial implementations
154 * We still like to call them internally
155 * "static inline" makes them more like macro's
156 */
157static inline BOOL EDIT_EM_CanUndo(HWND hwnd, EDITSTATE *es);
158static inline void EDIT_EM_EmptyUndoBuffer(HWND hwnd, EDITSTATE *es);
159static inline void EDIT_WM_Clear(HWND hwnd, EDITSTATE *es);
160static inline void EDIT_WM_Cut(HWND hwnd, EDITSTATE *es);
161
162/*
163 * Helper functions only valid for one type of control
164 */
165static void EDIT_BuildLineDefs_ML(HWND hwnd,EDITSTATE *es);
166static LPSTR EDIT_GetPasswordPointer_SL(HWND hwnd, EDITSTATE *es);
167static void EDIT_MoveDown_ML(HWND hwnd, EDITSTATE *es, BOOL extend);
168static void EDIT_MovePageDown_ML(HWND hwnd, EDITSTATE *es, BOOL extend);
169static void EDIT_MovePageUp_ML(HWND hwnd, EDITSTATE *es, BOOL extend);
170static void EDIT_MoveUp_ML(HWND hwnd, EDITSTATE *es, BOOL extend);
171static VOID EDIT_UpdateScrollBars(HWND hwnd,EDITSTATE *es,BOOL updateHorz,BOOL updateVert);
172/*
173 * Helper functions valid for both single line _and_ multi line controls
174 */
175static INT EDIT_CallWordBreakProc(HWND hwnd, EDITSTATE *es, INT start, INT index, INT count, INT action);
176static INT EDIT_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y, LPBOOL after_wrap);
177static void EDIT_ConfinePoint(HWND hwnd, EDITSTATE *es, LPINT x, LPINT y);
178static void EDIT_GetLineRect(HWND hwnd,HDC dc,EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc);
179static void EDIT_InvalidateText(HWND hwnd, EDITSTATE *es, INT start, INT end);
180static void EDIT_LockBuffer(HWND hwnd, EDITSTATE *es);
181static BOOL EDIT_MakeFit(HWND hwnd, EDITSTATE *es, INT size);
182static BOOL EDIT_MakeUndoFit(HWND hwnd, EDITSTATE *es, INT size);
183static void EDIT_MoveBackward(HWND hwnd, EDITSTATE *es, BOOL extend);
184static void EDIT_MoveEnd(HWND hwnd, EDITSTATE *es, BOOL extend);
185static void EDIT_MoveForward(HWND hwnd, EDITSTATE *es, BOOL extend);
186static void EDIT_MoveHome(HWND hwnd, EDITSTATE *es, BOOL extend);
187static void EDIT_MoveWordBackward(HWND hwnd, EDITSTATE *es, BOOL extend);
188static void EDIT_MoveWordForward(HWND hwnd, EDITSTATE *es, BOOL extend);
189static void EDIT_PaintLine(HWND hwnd, EDITSTATE *es, HDC hdc, INT line, BOOL rev);
190static VOID EDIT_PaintText(HWND hwnd, EDITSTATE *es, HDC hdc, INT x, INT y, INT line, INT col, INT count, BOOL rev);
191static void EDIT_SetCaretPos(HWND hwnd, EDITSTATE *es, INT pos, BOOL after_wrap);
192static void EDIT_SetRectNP(HWND hwnd, EDITSTATE *es, LPRECT lprc);
193static void EDIT_UnlockBuffer(HWND hwnd, EDITSTATE *es, BOOL force);
194static INT EDIT_WordBreakProc(LPSTR s, INT index, INT count, INT action);
195static VOID EDIT_Draw(HWND hwnd,EDITSTATE *es,HDC hdc);
196static VOID EDIT_Refresh(HWND hwnd,EDITSTATE *es,BOOL useCache);
197
198/*
199 * EM_XXX message handlers
200 */
201static LRESULT EDIT_EM_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y);
202static BOOL EDIT_EM_FmtLines(HWND hwnd, EDITSTATE *es, BOOL add_eol);
203static INT EDIT_EM_GetFirstVisibleLine(HWND hwnd,EDITSTATE *es);
204static HLOCAL EDIT_EM_GetHandle(HWND hwnd, EDITSTATE *es);
205static INT EDIT_EM_GetLimitText(HWND hwnd,EDITSTATE *es);
206static INT EDIT_EM_GetLine(HWND hwnd, EDITSTATE *es, INT line, LPSTR lpch);
207static INT EDIT_EM_GetLineCount(HWND hwnd,EDITSTATE *es);
208static LONG EDIT_EM_GetMargins(HWND hwnd,EDITSTATE *es);
209static BOOL EDIT_EM_GetModify(HWND hwnd,EDITSTATE *es);
210static CHAR EDIT_EM_GetPasswordChar(HWND hwnd,EDITSTATE *es);
211static VOID EDIT_EM_GetRect(HWND hwnd,EDITSTATE *es,LPRECT lprc);
212static LRESULT EDIT_EM_GetSel(HWND hwnd, EDITSTATE *es, LPUINT start, LPUINT end);
213static LRESULT EDIT_EM_GetThumb(HWND hwnd, EDITSTATE *es);
214static PVOID EDIT_EM_GetWordbreakProc(HWND hwnd,EDITSTATE *es);
215static INT EDIT_EM_LineFromChar(HWND hwnd, EDITSTATE *es, INT index);
216static INT EDIT_EM_LineIndex(HWND hwnd, EDITSTATE *es, INT line);
217static INT EDIT_EM_LineLength(HWND hwnd, EDITSTATE *es, INT index);
218static BOOL EDIT_EM_LineScroll(HWND hwnd, EDITSTATE *es, INT dx, INT dy);
219static LRESULT EDIT_EM_PosFromChar(HWND hwnd,HDC dc, EDITSTATE *es, INT index, BOOL after_wrap);
220static void EDIT_EM_ReplaceSel(HWND hwnd, EDITSTATE *es, BOOL can_undo, LPCSTR lpsz_replace);
221static LRESULT EDIT_EM_Scroll(HWND hwnd, EDITSTATE *es, INT action);
222static void EDIT_EM_ScrollCaret(HWND hwnd, EDITSTATE *es);
223static void EDIT_EM_SetHandle(HWND hwnd, EDITSTATE *es, HLOCAL hloc);
224static void EDIT_EM_SetLimitText(HWND hwnd, EDITSTATE *es, INT limit);
225static void EDIT_EM_SetMargins(HWND hwnd, EDITSTATE *es, INT action, INT left, INT right);
226static void EDIT_EM_SetModify(HWND hwnd,EDITSTATE *es,BOOL fModified);
227static void EDIT_EM_SetPasswordChar(HWND hwnd, EDITSTATE *es, CHAR c);
228static BOOL EDIT_EM_SetReadOnly(HWND hwnd,EDITSTATE *es,BOOL fReadOnly);
229static void EDIT_EM_SetRect(HWND hwnd,EDITSTATE *es,LPRECT lprc);
230static void EDIT_EM_SetRectNP(HWND hwnd,EDITSTATE *es,LPRECT lprc);
231static void EDIT_EM_SetSel(HWND hwnd, EDITSTATE *es, UINT start, UINT end, BOOL after_wrap);
232static BOOL EDIT_EM_SetTabStops(HWND hwnd, EDITSTATE *es, INT count, LPINT tabs);
233static void EDIT_EM_SetWordBreakProc(HWND hwnd, EDITSTATE *es, EDITWORDBREAKPROCA wbp);
234static BOOL EDIT_EM_Undo(HWND hwnd, EDITSTATE *es);
235static LRESULT EDIT_EM_SetIMEStatus(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam);
236static LRESULT EDIT_EM_GetIMEStatus(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam);
237/*
238 * WM_XXX message handlers
239 */
240static void EDIT_WM_Char(HWND hwnd, EDITSTATE *es, CHAR c, DWORD key_data);
241static void EDIT_WM_Command(HWND hwnd, EDITSTATE *es, INT code, INT id, HWND conrtol);
242static void EDIT_WM_ContextMenu(HWND hwnd, EDITSTATE *es, HWND hwndBtn, INT x, INT y);
243static void EDIT_WM_Copy(HWND hwnd, EDITSTATE *es);
244static LRESULT EDIT_WM_Create(HWND hwnd, EDITSTATE *es, LPCREATESTRUCTA cs);
245static void EDIT_WM_Destroy(HWND hwnd, EDITSTATE *es);
246static LRESULT EDIT_WM_EraseBkGnd(HWND hwnd, EDITSTATE *es, HDC dc);
247static INT EDIT_WM_GetText(HWND hwnd, EDITSTATE *es, INT count, LPSTR text);
248static LRESULT EDIT_WM_HScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar);
249static LRESULT EDIT_WM_KeyDown(HWND hwnd, EDITSTATE *es, INT key, DWORD key_data);
250static LRESULT EDIT_WM_KillFocus(HWND hwnd, EDITSTATE *es, HWND window_getting_focus);
251static LRESULT EDIT_WM_LButtonDblClk(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y);
252static LRESULT EDIT_WM_LButtonDown(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y);
253static LRESULT EDIT_WM_LButtonUp(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y);
254static LRESULT EDIT_WM_CaptureChanged(HWND hwnd,EDITSTATE *es);
255static LRESULT EDIT_WM_MouseMove(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y);
256static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTA cs);
257static void EDIT_WM_Paint(HWND hwnd, EDITSTATE *es,WPARAM wParam);
258static void EDIT_WM_Paste(HWND hwnd, EDITSTATE *es);
259static void EDIT_WM_SetFocus(HWND hwnd, EDITSTATE *es, HWND window_losing_focus);
260static void EDIT_WM_SetFont(HWND hwnd, EDITSTATE *es, HFONT font, BOOL redraw);
261static void EDIT_WM_SetText(HWND hwnd, EDITSTATE *es, LPCSTR text);
262static void EDIT_WM_Size(HWND hwnd, EDITSTATE *es, UINT action, INT width, INT height);
263static LRESULT EDIT_WM_SysKeyDown(HWND hwnd, EDITSTATE *es, INT key, DWORD key_data);
264static void EDIT_WM_Timer(HWND hwnd, EDITSTATE *es, INT id, TIMERPROC timer_proc);
265static LRESULT EDIT_WM_VScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar);
266static LRESULT EDIT_WM_MouseWheel(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam);
267
268/*********************************************************************
269 *
270 * EM_CANUNDO
271 *
272 */
273static inline BOOL EDIT_EM_CanUndo(HWND hwnd, EDITSTATE *es)
274{
275 return (es->undo_insert_count || lstrlenA(es->undo_text));
276}
277
278
279/*********************************************************************
280 *
281 * EM_EMPTYUNDOBUFFER
282 *
283 */
284static inline void EDIT_EM_EmptyUndoBuffer(HWND hwnd, EDITSTATE *es)
285{
286 es->undo_insert_count = 0;
287 *es->undo_text = '\0';
288}
289
290
291/*********************************************************************
292 *
293 * WM_CLEAR
294 *
295 */
296static inline void EDIT_WM_Clear(HWND hwnd, EDITSTATE *es)
297{
298 EDIT_EM_ReplaceSel(hwnd, es, TRUE, "");
299 if (es->flags & EF_UPDATE) {
300 es->flags &= ~EF_UPDATE;
301 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
302 }
303}
304
305
306/*********************************************************************
307 *
308 * WM_CUT
309 *
310 */
311static inline void EDIT_WM_Cut(HWND hwnd, EDITSTATE *es)
312{
313 EDIT_WM_Copy(hwnd, es);
314 EDIT_WM_Clear(hwnd, es);
315}
316
317
318/*********************************************************************
319 *
320 * EditWndProc()
321 *
322 * The messages are in the order of the actual integer values
323 * (which can be found in include/windows.h)
324 * Whereever possible the 16 bit versions are converted to
325 * the 32 bit ones, so that we can 'fall through' to the
326 * helper functions. These are mostly 32 bit (with a few
327 * exceptions, clearly indicated by a '16' extension to their
328 * names).
329 *
330 */
331LRESULT WINAPI EditWndProc( HWND hwnd, UINT msg,
332 WPARAM wParam, LPARAM lParam )
333{
334 EDITSTATE *es = (EDITSTATE*)GetInfoPtr(hwnd);
335 LRESULT result = 0;
336
337// dprintf(("EditWndProc hwnd: %04x, msg %s, wp %08x lp %08lx\n",
338// hwnd, GetMsgText(msg), wParam, lParam));
339
340 switch (msg) {
341 case WM_DESTROY:
342 //DPRINTF_EDIT_MSG32("WM_DESTROY");
343 EDIT_WM_Destroy(hwnd, es);
344 result = 0;
345 goto END;
346
347 case WM_NCCREATE:
348 //DPRINTF_EDIT_MSG32("WM_NCCREATE");
349 result = EDIT_WM_NCCreate(hwnd, (LPCREATESTRUCTA)lParam);
350 goto END;
351 }
352
353 if (!es)
354 {
355 result = DefWindowProcA(hwnd, msg, wParam, lParam);
356 goto END;
357 }
358
359
360 EDIT_LockBuffer(hwnd, es);
361 switch (msg) {
362 case EM_GETSEL:
363 //DPRINTF_EDIT_MSG32("EM_GETSEL");
364 result = EDIT_EM_GetSel(hwnd, es, (LPUINT)wParam, (LPUINT)lParam);
365 break;
366
367 case EM_SETSEL:
368 //DPRINTF_EDIT_MSG32("EM_SETSEL");
369 EDIT_EM_SetSel(hwnd, es, wParam, lParam, FALSE);
370 EDIT_EM_ScrollCaret(hwnd,es);
371 result = 1;
372 break;
373
374 case EM_GETRECT:
375 //DPRINTF_EDIT_MSG32("EM_GETRECT");
376 EDIT_EM_GetRect(hwnd,es,(LPRECT)lParam);
377 break;
378
379 case EM_SETRECT:
380 //DPRINTF_EDIT_MSG32("EM_SETRECT");
381 EDIT_EM_SetRect(hwnd,es,(LPRECT)lParam);
382 break;
383
384 case EM_SETRECTNP:
385 //DPRINTF_EDIT_MSG32("EM_SETRECTNP");
386 EDIT_EM_SetRectNP(hwnd,es,(LPRECT)lParam);
387 break;
388
389 case EM_SCROLL:
390 //DPRINTF_EDIT_MSG32("EM_SCROLL");
391 result = EDIT_EM_Scroll(hwnd, es, (INT)wParam);
392 break;
393
394 case EM_LINESCROLL:
395 //DPRINTF_EDIT_MSG32("EM_LINESCROLL");
396 result = (LRESULT)EDIT_EM_LineScroll(hwnd, es, (INT)wParam, (INT)lParam);
397 break;
398
399 case EM_SCROLLCARET:
400 //DPRINTF_EDIT_MSG32("EM_SCROLLCARET");
401 EDIT_EM_ScrollCaret(hwnd, es);
402 result = 1;
403 break;
404
405 case EM_GETMODIFY:
406 //DPRINTF_EDIT_MSG32("EM_GETMODIFY");
407 result = (LRESULT)EDIT_EM_GetModify(hwnd,es);
408 break;
409
410 case EM_SETMODIFY:
411 //DPRINTF_EDIT_MSG32("EM_SETMODIFY");
412 EDIT_EM_SetModify(hwnd,es,(BOOL)wParam);
413 break;
414
415 case EM_GETLINECOUNT:
416 //DPRINTF_EDIT_MSG32("EM_GETLINECOUNT");
417 result = (LRESULT)EDIT_EM_GetLineCount(hwnd,es);
418 break;
419
420 case EM_LINEINDEX:
421 //DPRINTF_EDIT_MSG32("EM_LINEINDEX");
422 result = (LRESULT)EDIT_EM_LineIndex(hwnd, es, (INT)wParam);
423 break;
424
425 case EM_SETHANDLE:
426 //DPRINTF_EDIT_MSG32("EM_SETHANDLE");
427 EDIT_EM_SetHandle(hwnd, es, (HLOCAL)wParam);
428 break;
429
430 case EM_GETHANDLE:
431 //DPRINTF_EDIT_MSG32("EM_GETHANDLE");
432 result = (LRESULT)EDIT_EM_GetHandle(hwnd, es);
433 break;
434
435 case EM_GETTHUMB:
436 //DPRINTF_EDIT_MSG32("EM_GETTHUMB");
437 result = EDIT_EM_GetThumb(hwnd, es);
438 break;
439
440 /* messages 0x00bf and 0x00c0 missing from specs */
441
442 case WM_USER+15:
443 //DPRINTF_EDIT_MSG16("undocumented WM_USER+15, please report");
444 /* fall through */
445 case 0x00bf:
446 //DPRINTF_EDIT_MSG32("undocumented 0x00bf, please report");
447 result = DefWindowProcA(hwnd, msg, wParam, lParam);
448 break;
449
450 case WM_USER+16:
451 //DPRINTF_EDIT_MSG16("undocumented WM_USER+16, please report");
452 /* fall through */
453 case 0x00c0:
454 //DPRINTF_EDIT_MSG32("undocumented 0x00c0, please report");
455 result = DefWindowProcA(hwnd, msg, wParam, lParam);
456 break;
457
458 case EM_LINELENGTH:
459 //DPRINTF_EDIT_MSG32("EM_LINELENGTH");
460 result = (LRESULT)EDIT_EM_LineLength(hwnd, es, (INT)wParam);
461 break;
462
463 case EM_REPLACESEL:
464 //DPRINTF_EDIT_MSG32("EM_REPLACESEL");
465 EDIT_EM_ReplaceSel(hwnd, es, (BOOL)wParam, (LPCSTR)lParam);
466 result = 1;
467 break;
468
469 /* message 0x00c3 missing from specs */
470
471 case WM_USER+19:
472 //DPRINTF_EDIT_MSG16("undocumented WM_USER+19, please report");
473 /* fall through */
474 case 0x00c3:
475 //DPRINTF_EDIT_MSG32("undocumented 0x00c3, please report");
476 result = DefWindowProcA(hwnd, msg, wParam, lParam);
477 break;
478
479 case EM_GETLINE:
480 //DPRINTF_EDIT_MSG32("EM_GETLINE");
481 result = (LRESULT)EDIT_EM_GetLine(hwnd, es, (INT)wParam, (LPSTR)lParam);
482 break;
483
484 case EM_SETLIMITTEXT:
485 //DPRINTF_EDIT_MSG32("EM_SETLIMITTEXT");
486 EDIT_EM_SetLimitText(hwnd, es, (INT)wParam);
487 break;
488
489 case EM_CANUNDO:
490 //DPRINTF_EDIT_MSG32("EM_CANUNDO");
491 result = (LRESULT)EDIT_EM_CanUndo(hwnd, es);
492 break;
493
494 case EM_UNDO:
495 /* fall through */
496 case WM_UNDO:
497 //DPRINTF_EDIT_MSG32("EM_UNDO / WM_UNDO");
498 result = (LRESULT)EDIT_EM_Undo(hwnd, es);
499 break;
500
501 case EM_FMTLINES:
502 //DPRINTF_EDIT_MSG32("EM_FMTLINES");
503 result = (LRESULT)EDIT_EM_FmtLines(hwnd, es, (BOOL)wParam);
504 break;
505
506 case EM_LINEFROMCHAR:
507 //DPRINTF_EDIT_MSG32("EM_LINEFROMCHAR");
508 result = (LRESULT)EDIT_EM_LineFromChar(hwnd, es, (INT)wParam);
509 break;
510
511 /* message 0x00ca missing from specs */
512
513 case WM_USER+26:
514 //DPRINTF_EDIT_MSG16("undocumented WM_USER+26, please report");
515 /* fall through */
516 case 0x00ca:
517 //DPRINTF_EDIT_MSG32("undocumented 0x00ca, please report");
518 result = DefWindowProcA(hwnd, msg, wParam, lParam);
519 break;
520
521 case EM_SETTABSTOPS:
522 //DPRINTF_EDIT_MSG32("EM_SETTABSTOPS");
523 result = (LRESULT)EDIT_EM_SetTabStops(hwnd, es, (INT)wParam, (LPINT)lParam);
524 break;
525
526 case EM_SETPASSWORDCHAR:
527 //DPRINTF_EDIT_MSG32("EM_SETPASSWORDCHAR");
528 EDIT_EM_SetPasswordChar(hwnd, es, (CHAR)wParam);
529 break;
530
531 case EM_EMPTYUNDOBUFFER:
532 //DPRINTF_EDIT_MSG32("EM_EMPTYUNDOBUFFER");
533 EDIT_EM_EmptyUndoBuffer(hwnd, es);
534 break;
535
536 case EM_GETFIRSTVISIBLELINE:
537 //DPRINTF_EDIT_MSG32("EM_GETFIRSTVISIBLELINE");
538 result = (LRESULT)EDIT_EM_GetFirstVisibleLine(hwnd,es);
539 break;
540
541 case EM_SETREADONLY:
542 //DPRINTF_EDIT_MSG32("EM_SETREADONLY");
543 result = (LRESULT)EDIT_EM_SetReadOnly(hwnd,es,(BOOL)wParam);
544 break;
545
546 case EM_SETWORDBREAKPROC:
547 //DPRINTF_EDIT_MSG32("EM_SETWORDBREAKPROC");
548 EDIT_EM_SetWordBreakProc(hwnd, es, (EDITWORDBREAKPROCA)lParam);
549 break;
550
551 case EM_GETWORDBREAKPROC:
552 //DPRINTF_EDIT_MSG32("EM_GETWORDBREAKPROC");
553 result = (LRESULT)EDIT_EM_GetWordbreakProc(hwnd,es);
554 break;
555
556 case EM_GETPASSWORDCHAR:
557 //DPRINTF_EDIT_MSG32("EM_GETPASSWORDCHAR");
558 result = (LRESULT)EDIT_EM_GetPasswordChar(hwnd,es);
559 break;
560
561 /* The following EM_xxx are new to win95 and don't exist for 16 bit */
562
563 case EM_SETMARGINS:
564 //DPRINTF_EDIT_MSG32("EM_SETMARGINS");
565 EDIT_EM_SetMargins(hwnd, es, (INT)wParam, SLOWORD(lParam), SHIWORD(lParam));
566 break;
567
568 case EM_GETMARGINS:
569 //DPRINTF_EDIT_MSG32("EM_GETMARGINS");
570 result = EDIT_EM_GetMargins(hwnd,es);
571 break;
572
573 case EM_GETLIMITTEXT:
574 //DPRINTF_EDIT_MSG32("EM_GETLIMITTEXT");
575 result = (LRESULT)EDIT_EM_GetLimitText(hwnd,es);
576 break;
577
578 case EM_POSFROMCHAR:
579 //DPRINTF_EDIT_MSG32("EM_POSFROMCHAR");
580 result = EDIT_EM_PosFromChar(hwnd,0, es, (INT)wParam, FALSE);
581 break;
582
583 case EM_CHARFROMPOS:
584 //DPRINTF_EDIT_MSG32("EM_CHARFROMPOS");
585 result = EDIT_EM_CharFromPos(hwnd, es, SLOWORD(lParam), SHIWORD(lParam));
586 break;
587
588 case EM_SETIMESTATUS:
589 result = EDIT_EM_SetIMEStatus(hwnd,es,wParam,lParam);
590 break;
591
592 case EM_GETIMESTATUS:
593 result = EDIT_EM_GetIMEStatus(hwnd,es,wParam,lParam);
594 break;
595
596 case WM_GETDLGCODE:
597 //DPRINTF_EDIT_MSG32("WM_GETDLGCODE");
598 result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
599
600 if (lParam && (((LPMSG)lParam)->message == WM_KEYDOWN))
601 {
602 int vk = (int)((LPMSG)lParam)->wParam;
603
604 if ((GetWindowLongA(hwnd,GWL_STYLE) & ES_WANTRETURN) && vk == VK_RETURN)
605 {
606 result |= DLGC_WANTMESSAGE;
607 }
608 else if (es->hwndListBox && (vk == VK_RETURN || vk == VK_ESCAPE))
609 {
610 if (SendMessageA(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
611 result |= DLGC_WANTMESSAGE;
612 }
613 }
614 break;
615
616 case WM_CHAR:
617 //DPRINTF_EDIT_MSG32("WM_CHAR");
618 if (((CHAR)wParam == VK_RETURN || (CHAR)wParam == VK_ESCAPE) && es->hwndListBox)
619 {
620 HWND hwndParent = GetParent(hwnd);
621
622 if (SendMessageA(hwndParent, CB_GETDROPPEDSTATE, 0, 0))
623 SendMessageA(hwndParent, WM_KEYDOWN, wParam, 0);
624 break;
625 }
626 EDIT_WM_Char(hwnd, es, (CHAR)wParam, (DWORD)lParam);
627 break;
628
629 case WM_CLEAR:
630 //DPRINTF_EDIT_MSG32("WM_CLEAR");
631 EDIT_WM_Clear(hwnd, es);
632 break;
633
634 case WM_COMMAND:
635 //DPRINTF_EDIT_MSG32("WM_COMMAND");
636 EDIT_WM_Command(hwnd, es, HIWORD(wParam), LOWORD(wParam), (HWND)lParam);
637 break;
638
639 case WM_CONTEXTMENU:
640 //DPRINTF_EDIT_MSG32("WM_CONTEXTMENU");
641 EDIT_WM_ContextMenu(hwnd, es, (HWND)wParam, SLOWORD(lParam), SHIWORD(lParam));
642 break;
643
644 case WM_COPY:
645 //DPRINTF_EDIT_MSG32("WM_COPY");
646 EDIT_WM_Copy(hwnd, es);
647 break;
648
649 case WM_CREATE:
650 //DPRINTF_EDIT_MSG32("WM_CREATE");
651 result = EDIT_WM_Create(hwnd, es, (LPCREATESTRUCTA)lParam);
652 break;
653
654 case WM_CUT:
655 //DPRINTF_EDIT_MSG32("WM_CUT");
656 EDIT_WM_Cut(hwnd, es);
657 break;
658
659 case WM_ENABLE:
660 //DPRINTF_EDIT_MSG32("WM_ENABLE");
661 es->bEnableState = (BOOL)wParam;
662 EDIT_Refresh(hwnd,es,FALSE);
663 break;
664
665 case WM_ERASEBKGND:
666 //DPRINTF_EDIT_MSG32("WM_ERASEBKGND");
667 result = EDIT_WM_EraseBkGnd(hwnd, es, (HDC)wParam);
668 break;
669
670 case WM_GETFONT:
671 //DPRINTF_EDIT_MSG32("WM_GETFONT");
672 result = (LRESULT)es->font;
673 break;
674
675 case WM_GETTEXT:
676 //DPRINTF_EDIT_MSG32("WM_GETTEXT");
677 result = (LRESULT)EDIT_WM_GetText(hwnd, es, (INT)wParam, (LPSTR)lParam);
678 break;
679
680 case WM_GETTEXTLENGTH:
681 //DPRINTF_EDIT_MSG32("WM_GETTEXTLENGTH");
682 result = lstrlenA(es->text);
683 break;
684
685 case WM_HSCROLL:
686 //DPRINTF_EDIT_MSG32("WM_HSCROLL");
687 result = EDIT_WM_HScroll(hwnd, es, LOWORD(wParam), SHIWORD(wParam), (HWND)lParam);
688 break;
689
690 case WM_KEYDOWN:
691 //DPRINTF_EDIT_MSG32("WM_KEYDOWN");
692 result = EDIT_WM_KeyDown(hwnd, es, (INT)wParam, (DWORD)lParam);
693 break;
694
695 case WM_KILLFOCUS:
696 //DPRINTF_EDIT_MSG32("WM_KILLFOCUS");
697 result = EDIT_WM_KillFocus(hwnd, es, (HWND)wParam);
698 break;
699
700 case WM_LBUTTONDBLCLK:
701 //DPRINTF_EDIT_MSG32("WM_LBUTTONDBLCLK");
702 result = EDIT_WM_LButtonDblClk(hwnd, es, (DWORD)wParam, SLOWORD(lParam), SHIWORD(lParam));
703 break;
704
705 case WM_LBUTTONDOWN:
706 //DPRINTF_EDIT_MSG32("WM_LBUTTONDOWN");
707 result = EDIT_WM_LButtonDown(hwnd, es, (DWORD)wParam, SLOWORD(lParam), SHIWORD(lParam));
708 break;
709
710 case WM_LBUTTONUP:
711 //DPRINTF_EDIT_MSG32("WM_LBUTTONUP");
712 result = EDIT_WM_LButtonUp(hwnd, es, (DWORD)wParam, SLOWORD(lParam), SHIWORD(lParam));
713 break;
714
715 case WM_CAPTURECHANGED:
716 result = EDIT_WM_CaptureChanged(hwnd,es);
717 break;
718
719 case WM_MOUSEACTIVATE:
720 /*
721 * FIXME: maybe DefWindowProc() screws up, but it seems that
722 * modalless dialog boxes need this. If we don't do this, the focus
723 * will _not_ be set by DefWindowProc() for edit controls in a
724 * modalless dialog box ???
725 */
726 //DPRINTF_EDIT_MSG32("WM_MOUSEACTIVATE");
727 result = MA_ACTIVATE;
728 break;
729
730 case WM_MOUSEMOVE:
731 /*
732 * DPRINTF_EDIT_MSG32("WM_MOUSEMOVE");
733 */
734 result = EDIT_WM_MouseMove(hwnd, es, (DWORD)wParam, SLOWORD(lParam), SHIWORD(lParam));
735 break;
736
737 case WM_PAINT:
738 //DPRINTF_EDIT_MSG32("WM_PAINT");
739 EDIT_WM_Paint(hwnd, es,wParam);
740 break;
741
742 case WM_PASTE:
743 //DPRINTF_EDIT_MSG32("WM_PASTE");
744 EDIT_WM_Paste(hwnd, es);
745 break;
746
747 case WM_SETFOCUS:
748 //DPRINTF_EDIT_MSG32("WM_SETFOCUS");
749 EDIT_WM_SetFocus(hwnd, es, (HWND)wParam);
750 break;
751
752 case WM_SETFONT:
753 //DPRINTF_EDIT_MSG32("WM_SETFONT");
754 EDIT_WM_SetFont(hwnd, es, (HFONT)wParam, LOWORD(lParam) != 0);
755 break;
756
757 case WM_SETTEXT:
758 //DPRINTF_EDIT_MSG32("WM_SETTEXT");
759 EDIT_WM_SetText(hwnd, es, (LPCSTR)lParam);
760 result = TRUE;
761 break;
762
763 case WM_SIZE:
764 //DPRINTF_EDIT_MSG32("WM_SIZE");
765 EDIT_WM_Size(hwnd, es, (UINT)wParam, LOWORD(lParam), HIWORD(lParam));
766 break;
767
768 case WM_SYSKEYDOWN:
769 //DPRINTF_EDIT_MSG32("WM_SYSKEYDOWN");
770 result = EDIT_WM_SysKeyDown(hwnd, es, (INT)wParam, (DWORD)lParam);
771 break;
772
773 case WM_TIMER:
774 //DPRINTF_EDIT_MSG32("WM_TIMER");
775 EDIT_WM_Timer(hwnd, es, (INT)wParam, (TIMERPROC)lParam);
776 break;
777
778 case WM_VSCROLL:
779 //DPRINTF_EDIT_MSG32("WM_VSCROLL");
780 result = EDIT_WM_VScroll(hwnd, es, LOWORD(wParam), SHIWORD(wParam), (HWND)(lParam));
781 break;
782
783 case WM_MOUSEWHEEL:
784 result = EDIT_WM_MouseWheel(hwnd,es,wParam,lParam);
785 break;
786
787 default:
788 result = DefWindowProcA(hwnd, msg, wParam, lParam);
789 break;
790 }
791 EDIT_UnlockBuffer(hwnd, es, FALSE);
792 END:
793 return result;
794
795}
796
797
798/*********************************************************************
799 *
800 * EDIT_BuildLineDefs_ML
801 *
802 * Build linked list of text lines.
803 * Lines can end with '\0' (last line), a character (if it is wrapped),
804 * a soft return '\r\r\n' or a hard return '\r\n'
805 *
806 */
807static void EDIT_BuildLineDefs_ML(HWND hwnd,EDITSTATE *es)
808{
809 HDC hdc = 0;
810 HFONT old_font = 0;
811 LPSTR start, cp;
812 INT fw;
813 LINEDEF *current_def;
814 LINEDEF **previous_next;
815
816 current_def = es->first_line_def;
817 do {
818 LINEDEF *next_def = current_def->next;
819 HeapFree(es->heap, 0, current_def);
820 current_def = next_def;
821 } while (current_def);
822 es->line_count = 0;
823 es->text_width = 0;
824
825 fw = es->format_rect.right - es->format_rect.left;
826 start = es->text;
827 previous_next = &es->first_line_def;
828 do {
829 current_def = (LINEDEF*)HeapAlloc(es->heap, 0, sizeof(LINEDEF));
830 current_def->next = NULL;
831 cp = start;
832 while (*cp) {
833 if ((*cp == '\r') && (*(cp + 1) == '\n'))
834 break;
835 cp++;
836 }
837 if (!(*cp)) {
838 current_def->ending = END_0;
839 current_def->net_length = lstrlenA(start);
840 } else if ((cp > start) && (*(cp - 1) == '\r')) {
841 current_def->ending = END_SOFT;
842 current_def->net_length = cp - start - 1;
843 } else {
844 current_def->ending = END_HARD;
845 current_def->net_length = cp - start;
846 }
847
848 if (!hdc)
849 {
850 hdc = GetDC(hwnd);
851 if (es->font)
852 old_font = SelectObject(hdc, es->font);
853 }
854
855 current_def->width = (INT)LOWORD(GetTabbedTextExtentA(hdc,
856 start, current_def->net_length,
857 es->tabs_count, es->tabs));
858 /* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */
859 if ((!(es->style & ES_AUTOHSCROLL)) && (current_def->width > fw)) {
860 INT next = 0;
861 INT prev;
862 do {
863 prev = next;
864 next = EDIT_CallWordBreakProc(hwnd, es, start - es->text,
865 prev + 1, current_def->net_length, WB_RIGHT);
866 current_def->width = (INT)LOWORD(GetTabbedTextExtentA(hdc,
867 start, next, es->tabs_count, es->tabs));
868 } while (current_def->width <= fw);
869 if (!prev) {
870 next = 0;
871 do {
872 prev = next;
873 next++;
874 current_def->width = (INT)LOWORD(GetTabbedTextExtentA(hdc,
875 start, next, es->tabs_count, es->tabs));
876 } while (current_def->width <= fw);
877 if (!prev)
878 prev = 1;
879 }
880 current_def->net_length = prev;
881 current_def->ending = END_WRAP;
882 current_def->width = (INT)LOWORD(GetTabbedTextExtentA(hdc, start,
883 current_def->net_length, es->tabs_count, es->tabs));
884 }
885 switch (current_def->ending) {
886 case END_SOFT:
887 current_def->length = current_def->net_length + 3;
888 break;
889 case END_HARD:
890 current_def->length = current_def->net_length + 2;
891 break;
892 case END_WRAP:
893 case END_0:
894 current_def->length = current_def->net_length;
895 break;
896 }
897 es->text_width = MAX(es->text_width, current_def->width);
898 start += current_def->length;
899 *previous_next = current_def;
900 previous_next = &current_def->next;
901 es->line_count++;
902 } while (current_def->ending != END_0);
903 if (hdc)
904 {
905 if (es->font)
906 SelectObject(hdc, old_font);
907 ReleaseDC(hwnd, hdc);
908 }
909 EDIT_UpdateScrollBars(hwnd,es,TRUE,TRUE);
910}
911
912
913/*********************************************************************
914 *
915 * EDIT_CallWordBreakProc
916 *
917 * Call appropriate WordBreakProc (internal or external).
918 *
919 * Note: The "start" argument should always be an index refering
920 * to es->text. The actual wordbreak proc might be
921 * 16 bit, so we can't always pass any 32 bit LPSTR.
922 * Hence we assume that es->text is the buffer that holds
923 * the string under examination (we can decide this for ourselves).
924 *
925 */
926static INT EDIT_CallWordBreakProc(HWND hwnd, EDITSTATE *es, INT start, INT index, INT count, INT action)
927{
928 if (es->word_break_procA)
929 {
930 //TRACE_(relay)("(wordbrk=%p,str='%s',idx=%d,cnt=%d,act=%d)\n",
931 // es->word_break_proc32A, es->text + start, index,
932 // count, action );
933 return (INT)es->word_break_procA( es->text + start, index,
934 count, action );
935 }
936 else
937 return EDIT_WordBreakProc(es->text + start, index, count, action);
938}
939
940
941/*********************************************************************
942 *
943 * EDIT_CharFromPos
944 *
945 * Beware: This is not the function called on EM_CHARFROMPOS
946 * The position _can_ be outside the formatting / client
947 * rectangle
948 * The return value is only the character index
949 *
950 */
951static INT EDIT_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
952{
953 INT index;
954 HDC dc = 0;
955 HFONT old_font = 0;
956
957 if (es->style & ES_MULTILINE) {
958 INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
959 INT line_index = 0;
960 LINEDEF *line_def = es->first_line_def;
961 INT low, high;
962 while ((line > 0) && line_def->next) {
963 line_index += line_def->length;
964 line_def = line_def->next;
965 line--;
966 }
967 x += es->x_offset - es->format_rect.left;
968 if (x >= line_def->width) {
969 if (after_wrap)
970 *after_wrap = (line_def->ending == END_WRAP);
971 return line_index + line_def->net_length;
972 }
973 if (x <= 0) {
974 if (after_wrap)
975 *after_wrap = FALSE;
976 return line_index;
977 }
978 low = line_index + 1;
979 high = line_index + line_def->net_length + 1;
980 if (low < high-1)
981 {
982 if (!dc)
983 {
984 dc = GetDC(hwnd);
985 if (es->font)
986 old_font = SelectObject(dc, es->font);
987 }
988
989 while (low < high-1)
990 {
991 INT mid = (low + high) / 2;
992 if (LOWORD(GetTabbedTextExtentA(dc, es->text + line_index,mid - line_index, es->tabs_count, es->tabs)) > x) high = mid;
993 else low = mid;
994 }
995 }
996 index = low;
997
998 if (after_wrap)
999 *after_wrap = ((index == line_index + line_def->net_length) &&
1000 (line_def->ending == END_WRAP));
1001 } else {
1002 LPSTR text;
1003 SIZE size;
1004 if (after_wrap)
1005 *after_wrap = FALSE;
1006 x -= es->format_rect.left;
1007 if (!x)
1008 return es->x_offset;
1009 text = EDIT_GetPasswordPointer_SL(hwnd, es);
1010 if (x < 0)
1011 {
1012 INT low = 0;
1013 INT high = es->x_offset;
1014
1015 if (low < high-1)
1016 {
1017 if (!dc)
1018 {
1019 dc = GetDC(hwnd);
1020 if (es->font)
1021 old_font = SelectObject(dc, es->font);
1022 }
1023
1024 while (low < high-1)
1025 {
1026 INT mid = (low + high) / 2;
1027
1028 GetTextExtentPoint32A( dc, text + mid,
1029 es->x_offset - mid, &size );
1030 if (size.cx > -x) low = mid;
1031 else high = mid;
1032 }
1033 }
1034 index = low;
1035 } else
1036 {
1037 INT low = es->x_offset;
1038 INT high = lstrlenA(es->text) + 1;
1039
1040 if (low < high-1)
1041 {
1042 if (!dc)
1043 {
1044 dc = GetDC(hwnd);
1045 if (es->font)
1046 old_font = SelectObject(dc, es->font);
1047 }
1048
1049 while (low < high-1)
1050 {
1051 INT mid = (low + high) / 2;
1052
1053 GetTextExtentPoint32A( dc, text + es->x_offset,
1054 mid - es->x_offset, &size );
1055 if (size.cx > x) high = mid;
1056 else low = mid;
1057 }
1058 }
1059 index = low;
1060 }
1061 if (es->style & ES_PASSWORD)
1062 HeapFree(es->heap, 0 ,text);
1063 }
1064 if (dc)
1065 {
1066 if (es->font)
1067 SelectObject(dc, old_font);
1068 ReleaseDC(hwnd, dc);
1069 }
1070 return index;
1071}
1072
1073
1074/*********************************************************************
1075 *
1076 * EDIT_ConfinePoint
1077 *
1078 * adjusts the point to be within the formatting rectangle
1079 * (so CharFromPos returns the nearest _visible_ character)
1080 *
1081 */
1082static void EDIT_ConfinePoint(HWND hwnd, EDITSTATE *es, LPINT x, LPINT y)
1083{
1084 *x = MIN(MAX(*x, es->format_rect.left), es->format_rect.right - 1);
1085 *y = MIN(MAX(*y, es->format_rect.top), es->format_rect.bottom - 1);
1086}
1087
1088
1089/*********************************************************************
1090 *
1091 * EDIT_GetLineRect
1092 *
1093 * Calculates the bounding rectangle for a line from a starting
1094 * column to an ending column.
1095 *
1096 */
1097static void EDIT_GetLineRect(HWND hwnd,HDC dc,EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
1098{
1099 INT line_index = EDIT_EM_LineIndex(hwnd, es, line);
1100
1101 if (es->style & ES_MULTILINE)
1102 rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
1103 else
1104 rc->top = es->format_rect.top;
1105 rc->bottom = rc->top + es->line_height;
1106
1107 rc->left = (scol == 0) ? es->format_rect.left : SLOWORD(EDIT_EM_PosFromChar(hwnd,dc, es, line_index + scol, TRUE));
1108 rc->right = (ecol == -1) ? es->format_rect.right : SLOWORD(EDIT_EM_PosFromChar(hwnd,dc, es, line_index + ecol, TRUE))+1;
1109}
1110
1111
1112/*********************************************************************
1113 *
1114 * EDIT_GetPasswordPointer_SL
1115 *
1116 * note: caller should free the (optionally) allocated buffer
1117 *
1118 */
1119static LPSTR EDIT_GetPasswordPointer_SL(HWND hwnd, EDITSTATE *es)
1120{
1121 if (es->style & ES_PASSWORD) {
1122 INT len = lstrlenA(es->text);
1123 LPSTR text = (LPSTR)HeapAlloc(es->heap, 0, len + 1);
1124 RtlFillMemory(text, len, es->password_char);
1125 text[len] = '\0';
1126 return text;
1127 } else
1128 return es->text;
1129}
1130
1131
1132/*********************************************************************
1133 *
1134 * EDIT_LockBuffer
1135 *
1136 * This acts as a LOCAL_Lock(), but it locks only once. This way
1137 * you can call it whenever you like, without unlocking.
1138 *
1139 */
1140static void EDIT_LockBuffer(HWND hwnd, EDITSTATE *es)
1141{
1142 if (!es) {
1143 //ERR_(edit)("no EDITSTATE ... please report\n");
1144 return;
1145 }
1146 if (!(es->style & ES_MULTILINE))
1147 return;
1148 if (!es->text) {
1149 if (es->hloc)
1150 es->text = (char*)LocalLock(es->hloc);
1151 else {
1152 //ERR_(edit)("no buffer ... please report\n");
1153 return;
1154 }
1155 }
1156 es->lock_count++;
1157}
1158
1159
1160/*********************************************************************
1161 *
1162 * EDIT_SL_InvalidateText
1163 *
1164 * Called from EDIT_InvalidateText().
1165 * Does the job for single-line controls only.
1166 *
1167 */
1168static void EDIT_SL_InvalidateText(HWND hwnd, EDITSTATE *es, INT start, INT end)
1169{
1170 RECT line_rect;
1171 RECT rc;
1172
1173 EDIT_GetLineRect(hwnd,0, es, 0, start, end, &line_rect);
1174
1175 if (IntersectRect(&rc, &line_rect, &es->format_rect))
1176 {
1177 HideCaret(hwnd);
1178 InvalidateRect(hwnd, &rc, TRUE);
1179 ShowCaret(hwnd);
1180 }
1181}
1182
1183
1184/*********************************************************************
1185 *
1186 * EDIT_ML_InvalidateText
1187 *
1188 * Called from EDIT_InvalidateText().
1189 * Does the job for multi-line controls only.
1190 *
1191 */
1192static void EDIT_ML_InvalidateText(HWND hwnd, EDITSTATE *es, INT start, INT end)
1193{
1194 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1195 INT sl = EDIT_EM_LineFromChar(hwnd, es, start);
1196 INT el = EDIT_EM_LineFromChar(hwnd, es, end);
1197 INT sc;
1198 INT ec;
1199 RECT rc1;
1200 RECT rcWnd;
1201 RECT rcLine;
1202 RECT rcUpdate;
1203 INT l;
1204
1205 if ((el < es->y_offset) || (sl > es->y_offset + vlc))
1206 return;
1207
1208 sc = start - EDIT_EM_LineIndex(hwnd, es, sl);
1209 ec = end - EDIT_EM_LineIndex(hwnd, es, el);
1210 if (sl < es->y_offset) {
1211 sl = es->y_offset;
1212 sc = 0;
1213 }
1214 if (el > es->y_offset + vlc) {
1215 el = es->y_offset + vlc;
1216 ec = EDIT_EM_LineLength(hwnd, es, EDIT_EM_LineIndex(hwnd, es, el));
1217 }
1218 GetClientRect(hwnd, &rc1);
1219 IntersectRect(&rcWnd, &rc1, &es->format_rect);
1220 HideCaret(hwnd);
1221 if (sl == el) {
1222 EDIT_GetLineRect(hwnd,0, es, sl, sc, ec, &rcLine);
1223
1224 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1225 InvalidateRect(hwnd, &rcUpdate, TRUE);
1226 } else {
1227 EDIT_GetLineRect(hwnd,0, es, sl, sc,
1228 EDIT_EM_LineLength(hwnd, es,
1229 EDIT_EM_LineIndex(hwnd, es, sl)),
1230 &rcLine);
1231 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1232 InvalidateRect(hwnd, &rcUpdate, TRUE);
1233 for (l = sl + 1 ; l < el ; l++) {
1234 EDIT_GetLineRect(hwnd,0, es, l, 0,
1235 EDIT_EM_LineLength(hwnd, es,
1236 EDIT_EM_LineIndex(hwnd, es, l)),
1237 &rcLine);
1238 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1239 InvalidateRect(hwnd, &rcUpdate, TRUE);
1240 }
1241 EDIT_GetLineRect(hwnd,0, es, el, 0, ec, &rcLine);
1242 if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
1243 InvalidateRect(hwnd, &rcUpdate, TRUE);
1244 }
1245 ShowCaret(hwnd);
1246}
1247
1248
1249/*********************************************************************
1250 *
1251 * EDIT_InvalidateText
1252 *
1253 * Invalidate the text from offset start upto, but not including,
1254 * offset end. Useful for (re)painting the selection.
1255 * Regions outside the linewidth are not invalidated.
1256 * end == -1 means end == TextLength.
1257 * start and end need not be ordered.
1258 *
1259 */
1260static void EDIT_InvalidateText(HWND hwnd, EDITSTATE *es, INT start, INT end)
1261{
1262 if (end == start)
1263 return;
1264
1265 if (end == -1)
1266 end = lstrlenA(es->text);
1267
1268 ORDER_INT(start, end);
1269
1270 if (es->style & ES_MULTILINE)
1271 EDIT_ML_InvalidateText(hwnd, es, start, end);
1272 else
1273 EDIT_SL_InvalidateText(hwnd, es, start, end);
1274}
1275
1276
1277/*********************************************************************
1278 *
1279 * EDIT_MakeFit
1280 *
1281 * Try to fit size + 1 bytes in the buffer. Constrain to limits.
1282 *
1283 */
1284static BOOL EDIT_MakeFit(HWND hwnd, EDITSTATE *es, INT size)
1285{
1286 HLOCAL hNew32;
1287
1288#ifndef __WIN32OS2__
1289 if (size > es->buffer_limit) {
1290 EDIT_NOTIFY_PARENT(hwnd, EN_MAXTEXT);
1291 return FALSE;
1292 }
1293#endif
1294
1295 if (size <= es->buffer_size)
1296 return TRUE;
1297 size = ((size / GROWLENGTH) + 1) * GROWLENGTH;
1298
1299#ifndef __WIN32OS2__
1300 if (size > es->buffer_limit)
1301 size = es->buffer_limit;
1302#endif
1303
1304 //TRACE_(edit)("trying to ReAlloc to %d+1\n", size);
1305
1306 EDIT_UnlockBuffer(hwnd, es, TRUE);
1307 if (es->text) {
1308 es->text = (char*)HeapReAlloc(es->heap, 0, es->text, size + 1);
1309 if (es->text)
1310#ifdef __WIN32OS2__
1311 es->buffer_size = HeapSize(es->heap, 0, es->text) - 1;
1312#else
1313 es->buffer_size = MIN(HeapSize(es->heap, 0, es->text) - 1, es->buffer_limit);
1314#endif
1315 else
1316 es->buffer_size = 0;
1317 } else if (es->hloc) {
1318 hNew32 = LocalReAlloc(es->hloc, size + 1, 0);
1319 if (hNew32) {
1320 //TRACE_(edit)("Old 32 bit handle %08x, new handle %08x\n", es->hloc32, hNew32);
1321 es->hloc = hNew32;
1322#ifdef __WIN32OS2__
1323 es->buffer_size = LocalSize(es->hloc) - 1;
1324#else
1325 es->buffer_size = MIN(LocalSize(es->hloc) - 1, es->buffer_limit);
1326#endif
1327 }
1328 }
1329 if (es->buffer_size < size) {
1330 EDIT_LockBuffer(hwnd, es);
1331 //WARN_(edit)("FAILED ! We now have %d+1\n", es->buffer_size);
1332 EDIT_NOTIFY_PARENT(hwnd, EN_ERRSPACE);
1333 return FALSE;
1334 } else {
1335 EDIT_LockBuffer(hwnd, es);
1336 //TRACE_(edit)("We now have %d+1\n", es->buffer_size);
1337 return TRUE;
1338 }
1339}
1340
1341
1342/*********************************************************************
1343 *
1344 * EDIT_MakeUndoFit
1345 *
1346 * Try to fit size + 1 bytes in the undo buffer.
1347 *
1348 */
1349static BOOL EDIT_MakeUndoFit(HWND hwnd, EDITSTATE *es, INT size)
1350{
1351 if (size <= es->undo_buffer_size)
1352 return TRUE;
1353 size = ((size / GROWLENGTH) + 1) * GROWLENGTH;
1354
1355 //TRACE_(edit)("trying to ReAlloc to %d+1\n", size);
1356 es->undo_text = (char*)HeapReAlloc(es->heap, 0, es->undo_text, size + 1);
1357 if (es->undo_text) {
1358 es->undo_buffer_size = HeapSize(es->heap, 0, es->undo_text) - 1;
1359 if (es->undo_buffer_size < size) {
1360 //WARN_(edit)("FAILED ! We now have %d+1\n", es->undo_buffer_size);
1361 return FALSE;
1362 }
1363 return TRUE;
1364 }
1365 return FALSE;
1366}
1367
1368
1369/*********************************************************************
1370 *
1371 * EDIT_MoveBackward
1372 *
1373 */
1374static void EDIT_MoveBackward(HWND hwnd, EDITSTATE *es, BOOL extend)
1375{
1376 INT e = es->selection_end;
1377
1378 if (e) {
1379 e--;
1380 if ((es->style & ES_MULTILINE) && e &&
1381 (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
1382 e--;
1383 if (e && (es->text[e - 1] == '\r'))
1384 e--;
1385 }
1386 }
1387 EDIT_EM_SetSel(hwnd, es, extend ? es->selection_start : e, e, FALSE);
1388 EDIT_EM_ScrollCaret(hwnd, es);
1389}
1390
1391
1392/*********************************************************************
1393 *
1394 * EDIT_MoveDown_ML
1395 *
1396 * Only for multi line controls
1397 * Move the caret one line down, on a column with the nearest
1398 * x coordinate on the screen (might be a different column).
1399 *
1400 */
1401static void EDIT_MoveDown_ML(HWND hwnd, EDITSTATE *es, BOOL extend)
1402{
1403 INT s = es->selection_start;
1404 INT e = es->selection_end;
1405 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1406 LRESULT pos = EDIT_EM_PosFromChar(hwnd,0, es, e, after_wrap);
1407 INT x = SLOWORD(pos);
1408 INT y = SHIWORD(pos);
1409
1410 e = EDIT_CharFromPos(hwnd, es, x, y + es->line_height, &after_wrap);
1411 if (!extend)
1412 s = e;
1413 EDIT_EM_SetSel(hwnd, es, s, e, after_wrap);
1414 EDIT_EM_ScrollCaret(hwnd, es);
1415}
1416
1417
1418/*********************************************************************
1419 *
1420 * EDIT_MoveEnd
1421 *
1422 */
1423static void EDIT_MoveEnd(HWND hwnd, EDITSTATE *es, BOOL extend)
1424{
1425 BOOL after_wrap = FALSE;
1426 INT e;
1427
1428 /* Pass a high value in x to make sure of receiving the en of the line */
1429 if (es->style & ES_MULTILINE)
1430 e = EDIT_CharFromPos(hwnd, es, 0x3fffffff,
1431 HIWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
1432 else
1433 e = lstrlenA(es->text);
1434 EDIT_EM_SetSel(hwnd, es, extend ? es->selection_start : e, e, after_wrap);
1435 EDIT_EM_ScrollCaret(hwnd, es);
1436}
1437
1438
1439/*********************************************************************
1440 *
1441 * EDIT_MoveForward
1442 *
1443 */
1444static void EDIT_MoveForward(HWND hwnd, EDITSTATE *es, BOOL extend)
1445{
1446 INT e = es->selection_end;
1447
1448 if (es->text[e]) {
1449 e++;
1450 if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
1451 if (es->text[e] == '\n')
1452 e++;
1453 else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
1454 e += 2;
1455 }
1456 }
1457 EDIT_EM_SetSel(hwnd, es, extend ? es->selection_start : e, e, FALSE);
1458 EDIT_EM_ScrollCaret(hwnd, es);
1459}
1460
1461
1462/*********************************************************************
1463 *
1464 * EDIT_MoveHome
1465 *
1466 * Home key: move to beginning of line.
1467 *
1468 */
1469static void EDIT_MoveHome(HWND hwnd, EDITSTATE *es, BOOL extend)
1470{
1471 INT e;
1472
1473 /* Pass the x_offset in x to make sure of receiving the first position of the line */
1474 if (es->style & ES_MULTILINE)
1475 e = EDIT_CharFromPos(hwnd, es, -es->x_offset,
1476 HIWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
1477 else
1478 e = 0;
1479 EDIT_EM_SetSel(hwnd, es, extend ? es->selection_start : e, e, FALSE);
1480 EDIT_EM_ScrollCaret(hwnd, es);
1481}
1482
1483
1484/*********************************************************************
1485 *
1486 * EDIT_MovePageDown_ML
1487 *
1488 * Only for multi line controls
1489 * Move the caret one page down, on a column with the nearest
1490 * x coordinate on the screen (might be a different column).
1491 *
1492 */
1493static void EDIT_MovePageDown_ML(HWND hwnd, EDITSTATE *es, BOOL extend)
1494{
1495 INT s = es->selection_start;
1496 INT e = es->selection_end;
1497 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1498 LRESULT pos = EDIT_EM_PosFromChar(hwnd,0, es, e, after_wrap);
1499 INT x = SLOWORD(pos);
1500 INT y = SHIWORD(pos);
1501
1502 e = EDIT_CharFromPos(hwnd, es, x,
1503 y + (es->format_rect.bottom - es->format_rect.top),
1504 &after_wrap);
1505 if (!extend)
1506 s = e;
1507 EDIT_EM_SetSel(hwnd, es, s, e, after_wrap);
1508 EDIT_EM_ScrollCaret(hwnd, es);
1509}
1510
1511
1512/*********************************************************************
1513 *
1514 * EDIT_MovePageUp_ML
1515 *
1516 * Only for multi line controls
1517 * Move the caret one page up, on a column with the nearest
1518 * x coordinate on the screen (might be a different column).
1519 *
1520 */
1521static void EDIT_MovePageUp_ML(HWND hwnd, EDITSTATE *es, BOOL extend)
1522{
1523 INT s = es->selection_start;
1524 INT e = es->selection_end;
1525 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1526 LRESULT pos = EDIT_EM_PosFromChar(hwnd,0, es, e, after_wrap);
1527 INT x = SLOWORD(pos);
1528 INT y = SHIWORD(pos);
1529
1530 e = EDIT_CharFromPos(hwnd, es, x,
1531 y - (es->format_rect.bottom - es->format_rect.top),
1532 &after_wrap);
1533 if (!extend)
1534 s = e;
1535 EDIT_EM_SetSel(hwnd, es, s, e, after_wrap);
1536 EDIT_EM_ScrollCaret(hwnd, es);
1537}
1538
1539
1540/*********************************************************************
1541 *
1542 * EDIT_MoveUp_ML
1543 *
1544 * Only for multi line controls
1545 * Move the caret one line up, on a column with the nearest
1546 * x coordinate on the screen (might be a different column).
1547 *
1548 */
1549static void EDIT_MoveUp_ML(HWND hwnd, EDITSTATE *es, BOOL extend)
1550{
1551 INT s = es->selection_start;
1552 INT e = es->selection_end;
1553 BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
1554 LRESULT pos = EDIT_EM_PosFromChar(hwnd,0, es, e, after_wrap);
1555 INT x = SLOWORD(pos);
1556 INT y = SHIWORD(pos);
1557
1558 e = EDIT_CharFromPos(hwnd, es, x, y - es->line_height, &after_wrap);
1559 if (!extend)
1560 s = e;
1561 EDIT_EM_SetSel(hwnd, es, s, e, after_wrap);
1562 EDIT_EM_ScrollCaret(hwnd, es);
1563}
1564
1565
1566/*********************************************************************
1567 *
1568 * EDIT_MoveWordBackward
1569 *
1570 */
1571static void EDIT_MoveWordBackward(HWND hwnd, EDITSTATE *es, BOOL extend)
1572{
1573 INT s = es->selection_start;
1574 INT e = es->selection_end;
1575 INT l;
1576 INT ll;
1577 INT li;
1578
1579 l = EDIT_EM_LineFromChar(hwnd, es, e);
1580 ll = EDIT_EM_LineLength(hwnd, es, e);
1581 li = EDIT_EM_LineIndex(hwnd, es, l);
1582 if (e - li == 0) {
1583 if (l) {
1584 li = EDIT_EM_LineIndex(hwnd, es, l - 1);
1585 e = li + EDIT_EM_LineLength(hwnd, es, li);
1586 }
1587 } else {
1588 e = li + (INT)EDIT_CallWordBreakProc(hwnd, es,
1589 li, e - li, ll, WB_LEFT);
1590 }
1591 if (!extend)
1592 s = e;
1593 EDIT_EM_SetSel(hwnd, es, s, e, FALSE);
1594 EDIT_EM_ScrollCaret(hwnd, es);
1595}
1596
1597
1598/*********************************************************************
1599 *
1600 * EDIT_MoveWordForward
1601 *
1602 */
1603static void EDIT_MoveWordForward(HWND hwnd, EDITSTATE *es, BOOL extend)
1604{
1605 INT s = es->selection_start;
1606 INT e = es->selection_end;
1607 INT l;
1608 INT ll;
1609 INT li;
1610
1611 l = EDIT_EM_LineFromChar(hwnd, es, e);
1612 ll = EDIT_EM_LineLength(hwnd, es, e);
1613 li = EDIT_EM_LineIndex(hwnd, es, l);
1614 if (e - li == ll) {
1615 if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
1616 e = EDIT_EM_LineIndex(hwnd, es, l + 1);
1617 } else {
1618 e = li + EDIT_CallWordBreakProc(hwnd, es,
1619 li, e - li + 1, ll, WB_RIGHT);
1620 }
1621 if (!extend)
1622 s = e;
1623 EDIT_EM_SetSel(hwnd, es, s, e, FALSE);
1624 EDIT_EM_ScrollCaret(hwnd, es);
1625}
1626
1627
1628/*********************************************************************
1629 *
1630 * EDIT_PaintLine
1631 *
1632 */
1633static void EDIT_PaintLine(HWND hwnd, EDITSTATE *es, HDC dc, INT line, BOOL rev)
1634{
1635 INT s = es->selection_start;
1636 INT e = es->selection_end;
1637 INT li;
1638 INT ll;
1639 INT x;
1640 INT y;
1641 LRESULT pos;
1642
1643 if (es->style & ES_MULTILINE) {
1644 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
1645 if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
1646 return;
1647 } else if (line)
1648 return;
1649
1650 //TRACE_(edit)("line=%d\n", line);
1651
1652 pos = EDIT_EM_PosFromChar(hwnd,dc, es, EDIT_EM_LineIndex(hwnd, es, line), FALSE);
1653 x = SLOWORD(pos);
1654 y = SHIWORD(pos);
1655 li = EDIT_EM_LineIndex(hwnd, es, line);
1656 ll = EDIT_EM_LineLength(hwnd, es, li);
1657 s = es->selection_start;
1658 e = es->selection_end;
1659 ORDER_INT(s, e);
1660 s = MIN(li + ll, MAX(li, s));
1661 e = MIN(li + ll, MAX(li, e));
1662
1663 if (rev && (s != e) && ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL)))
1664 {
1665 HRGN oldRgn,newRgn,combRgn;
1666 RECT rect;
1667 //CB: OS/2 has problems with relative string positions (i.e. Communicator)
1668 // fix: always calculate string from starting point, tab bugs fixed too
1669 // otherwise we have 'dancing characters'
1670
1671 if (!(es->style & ES_MULTILINE))
1672 {
1673 SIZE size;
1674
1675 rect.top = y;
1676 rect.bottom = y+es->line_height;
1677 GetTextExtentPoint32A(dc,es->text+li,s-li,&size);
1678 rect.left = x+size.cx;
1679 GetTextExtentPoint32A(dc,es->text+li,e-li,&size);
1680 rect.right = x+size.cx;
1681
1682 oldRgn = CreateRectRgnIndirect(&rect); //dummy parameter
1683 GetClipRgn(dc,oldRgn);
1684 newRgn = CreateRectRgnIndirect(&rect);
1685 combRgn = CreateRectRgnIndirect(&rect); //dummy parameter
1686 CombineRgn(combRgn,oldRgn,newRgn,RGN_XOR);
1687 SelectClipRgn(dc,combRgn);
1688 EDIT_PaintText(hwnd,es,dc,x,y,line,0,ll,FALSE);
1689 CombineRgn(combRgn,oldRgn,newRgn,RGN_AND);
1690 SelectClipRgn(dc,combRgn);
1691 EDIT_PaintText(hwnd,es,dc,x,y,line,0,e-li,TRUE);
1692 DeleteObject(oldRgn);
1693 DeleteObject(newRgn);
1694 DeleteObject(combRgn);
1695 } else
1696 {
1697 rect.top = y;
1698 rect.bottom = y+es->line_height;
1699 rect.left = x+LOWORD(TabbedTextOutA(dc,x,y,es->text+li,s-li,es->tabs_count,es->tabs,es->format_rect.left-es->x_offset));
1700 rect.right = x+LOWORD(TabbedTextOutA(dc,x,y,es->text+li,e-li,es->tabs_count,es->tabs,es->format_rect.left-es->x_offset));
1701
1702 oldRgn = CreateRectRgnIndirect(&rect); //dummy parameter
1703 GetClipRgn(dc,oldRgn);
1704 newRgn = CreateRectRgnIndirect(&rect);
1705 combRgn = CreateRectRgnIndirect(&rect); //dummy parameter
1706 CombineRgn(combRgn,oldRgn,newRgn,RGN_XOR);
1707 CombineRgn(combRgn,oldRgn,combRgn,RGN_AND);
1708 SelectClipRgn(dc,combRgn);
1709 EDIT_PaintText(hwnd,es,dc,x,y,line,0,ll,FALSE);
1710 CombineRgn(combRgn,oldRgn,newRgn,RGN_AND);
1711 SelectClipRgn(dc,combRgn);
1712 EDIT_PaintText(hwnd,es,dc,x,y,line,0,e-li,TRUE);
1713 SelectClipRgn(dc,oldRgn);
1714 DeleteObject(oldRgn);
1715 DeleteObject(newRgn);
1716 DeleteObject(combRgn);
1717 }
1718 } else EDIT_PaintText(hwnd, es, dc, x, y, line, 0, ll, FALSE);
1719}
1720
1721
1722/*********************************************************************
1723 *
1724 * EDIT_PaintText
1725 *
1726 */
1727static VOID EDIT_PaintText(HWND hwnd, EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
1728{
1729 COLORREF BkColor;
1730 COLORREF TextColor;
1731 INT li;
1732
1733 if (!count)
1734 return;
1735 BkColor = GetBkColor(dc);
1736 TextColor = GetTextColor(dc);
1737 if (rev)
1738 {
1739 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
1740 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
1741 }
1742 li = EDIT_EM_LineIndex(hwnd, es, line);
1743 if (es->style & ES_MULTILINE)
1744 {
1745 TabbedTextOutA(dc, x, y, es->text + li + col, count,
1746 es->tabs_count, es->tabs, es->format_rect.left - es->x_offset);
1747 } else
1748 {
1749 LPSTR text = EDIT_GetPasswordPointer_SL(hwnd, es);
1750 POINT pt;
1751
1752 TextOutA(dc,x,y,text+li+col,count);
1753 if (es->style & ES_PASSWORD)
1754 HeapFree(es->heap, 0, text);
1755 }
1756 if (rev)
1757 {
1758 SetBkColor(dc, BkColor);
1759 SetTextColor(dc, TextColor);
1760 }
1761}
1762
1763
1764/*********************************************************************
1765 *
1766 * EDIT_SetCaretPos
1767 *
1768 */
1769static void EDIT_SetCaretPos(HWND hwnd, EDITSTATE *es, INT pos,
1770 BOOL after_wrap)
1771{
1772 LRESULT res = EDIT_EM_PosFromChar(hwnd,0, es, pos, after_wrap);
1773 INT x = SLOWORD(res);
1774 INT y = SHIWORD(res);
1775
1776 if(x < es->format_rect.left)
1777 x = es->format_rect.left;
1778 if(x > es->format_rect.right - 2)
1779 x = es->format_rect.right - 2;
1780 if(y > es->format_rect.bottom)
1781 y = es->format_rect.bottom;
1782 if(y < es->format_rect.top)
1783 y = es->format_rect.top;
1784 SetCaretPos(x, y);
1785 return;
1786}
1787
1788
1789/*********************************************************************
1790 *
1791 * EDIT_SetRectNP
1792 *
1793 * note: this is not (exactly) the handler called on EM_SETRECTNP
1794 * it is also used to set the rect of a single line control
1795 *
1796 */
1797static void EDIT_SetRectNP(HWND hwnd, EDITSTATE *es, LPRECT rc)
1798{
1799 CopyRect(&es->format_rect, rc);
1800 if (es->style & WS_BORDER)
1801 {
1802 INT bw = GetSystemMetrics(SM_CXBORDER)+1,bh = GetSystemMetrics(SM_CYBORDER)+1;
1803
1804 es->format_rect.left += bw;
1805 es->format_rect.top += bh;
1806 es->format_rect.right -= bw;
1807 es->format_rect.bottom -= bh;
1808 }
1809 es->format_rect.left += es->left_margin;
1810 es->format_rect.right -= es->right_margin;
1811 es->format_rect.right = MAX(es->format_rect.right, es->format_rect.left + es->char_width);
1812 if (es->style & ES_MULTILINE)
1813 es->format_rect.bottom = es->format_rect.top +
1814 MAX(1, (es->format_rect.bottom - es->format_rect.top) / es->line_height) * es->line_height;
1815 else
1816 es->format_rect.bottom = es->format_rect.top + es->line_height;
1817 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
1818 EDIT_BuildLineDefs_ML(hwnd,es);
1819 EDIT_UpdateScrollBars(hwnd,es,TRUE,TRUE);
1820}
1821
1822
1823/*********************************************************************
1824 *
1825 * EDIT_UnlockBuffer
1826 *
1827 */
1828static void EDIT_UnlockBuffer(HWND hwnd, EDITSTATE *es, BOOL force)
1829{
1830 if (!es) {
1831 //ERR_(edit)("no EDITSTATE ... please report\n");
1832 return;
1833 }
1834 if (!(es->style & ES_MULTILINE))
1835 return;
1836 if (!es->lock_count) {
1837 //ERR_(edit)("lock_count == 0 ... please report\n");
1838 return;
1839 }
1840 if (!es->text) {
1841 //ERR_(edit)("es->text == 0 ... please report\n");
1842 return;
1843 }
1844 if (force || (es->lock_count == 1)) {
1845 if (es->hloc) {
1846 LocalUnlock(es->hloc);
1847 es->text = NULL;
1848 }
1849 }
1850 es->lock_count--;
1851}
1852
1853
1854/*********************************************************************
1855 *
1856 * EDIT_WordBreakProc
1857 *
1858 * Find the beginning of words.
1859 * Note: unlike the specs for a WordBreakProc, this function only
1860 * allows to be called without linebreaks between s[0] upto
1861 * s[count - 1]. Remember it is only called
1862 * internally, so we can decide this for ourselves.
1863 *
1864 */
1865static INT EDIT_WordBreakProc(LPSTR s, INT index, INT count, INT action)
1866{
1867 INT ret = 0;
1868
1869 //TRACE_(edit)("s=%p, index=%u, count=%u, action=%d\n",
1870 // s, index, count, action);
1871
1872 switch (action) {
1873 case WB_LEFT:
1874 if (!count)
1875 break;
1876 if (index)
1877 index--;
1878 if (s[index] == ' ') {
1879 while (index && (s[index] == ' '))
1880 index--;
1881 if (index) {
1882 while (index && (s[index] != ' '))
1883 index--;
1884 if (s[index] == ' ')
1885 index++;
1886 }
1887 } else {
1888 while (index && (s[index] != ' '))
1889 index--;
1890 if (s[index] == ' ')
1891 index++;
1892 }
1893 ret = index;
1894 break;
1895 case WB_RIGHT:
1896 if (!count)
1897 break;
1898 if (index)
1899 index--;
1900 if (s[index] == ' ')
1901 while ((index < count) && (s[index] == ' ')) index++;
1902 else {
1903 while (s[index] && (s[index] != ' ') && (index < count))
1904 index++;
1905 while ((s[index] == ' ') && (index < count)) index++;
1906 }
1907 ret = index;
1908 break;
1909 case WB_ISDELIMITER:
1910 ret = (s[index] == ' ');
1911 break;
1912 default:
1913 //ERR_(edit)("unknown action code, please report !\n");
1914 break;
1915 }
1916 return ret;
1917}
1918
1919
1920/*********************************************************************
1921 *
1922 * EM_CHARFROMPOS
1923 *
1924 * returns line number (not index) in high-order word of result.
1925 * NB : Q137805 is unclear about this. POINT * pointer in lParam apply
1926 * to Richedit, not to the edit control. Original documentation is valid.
1927 *
1928 */
1929static LRESULT EDIT_EM_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y)
1930{
1931 POINT pt;
1932 INT index;
1933
1934 pt.x = x;
1935 pt.y = y;
1936
1937 if (!PtInRect(&es->format_rect,pt)) return -1;
1938
1939 index = EDIT_CharFromPos(hwnd, es, x, y, NULL);
1940 return MAKELONG(index, EDIT_EM_LineFromChar(hwnd, es, index));
1941}
1942
1943
1944/*********************************************************************
1945 *
1946 * EM_FMTLINES
1947 *
1948 * Enable or disable soft breaks.
1949 */
1950static BOOL EDIT_EM_FmtLines(HWND hwnd, EDITSTATE *es, BOOL add_eol)
1951{
1952 es->flags &= ~EF_USE_SOFTBRK;
1953 if (add_eol) {
1954 es->flags |= EF_USE_SOFTBRK;
1955 dprintf(("EDIT: EM_FMTLINES: soft break enabled, not implemented\n"));
1956 }
1957 return add_eol;
1958}
1959
1960static INT EDIT_EM_GetFirstVisibleLine(HWND hwnd,EDITSTATE *es)
1961{
1962 return (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
1963}
1964
1965/*********************************************************************
1966 *
1967 * EM_GETHANDLE
1968 *
1969 * Hopefully this won't fire back at us.
1970 * We always start with a fixed buffer in our own heap.
1971 * However, with this message a 32 bit application requests
1972 * a handle to 32 bit moveable local heap memory, where it expects
1973 * to find the text.
1974 * It's a pity that from this moment on we have to use this
1975 * local heap, because applications may rely on the handle
1976 * in the future.
1977 *
1978 * In this function we'll try to switch to local heap.
1979 *
1980 */
1981static HLOCAL EDIT_EM_GetHandle(HWND hwnd, EDITSTATE *es)
1982{
1983 HLOCAL newBuf;
1984 LPSTR newText;
1985 INT newSize;
1986
1987 if (!(es->style & ES_MULTILINE))
1988 return 0;
1989
1990 if (es->hloc)
1991 return es->hloc;
1992
1993 if (!(newBuf = LocalAlloc(LMEM_MOVEABLE, lstrlenA(es->text) + 1))) {
1994 //ERR_(edit)("could not allocate new 32 bit buffer\n");
1995 return 0;
1996 }
1997#ifdef __WIN32OS2__
1998 newSize = LocalSize(newBuf) - 1;
1999#else
2000 newSize = MIN(LocalSize(newBuf) - 1, es->buffer_limit);
2001#endif
2002 if (!(newText = (char*)LocalLock(newBuf))) {
2003 //ERR_(edit)("could not lock new 32 bit buffer\n");
2004 LocalFree(newBuf);
2005 return 0;
2006 }
2007 lstrcpyA(newText, es->text);
2008 EDIT_UnlockBuffer(hwnd, es, TRUE);
2009 if (es->text)
2010 HeapFree(es->heap, 0, es->text);
2011 es->hloc = newBuf;
2012 es->buffer_size = newSize;
2013 es->text = newText;
2014 EDIT_LockBuffer(hwnd, es);
2015 //TRACE_(edit)("switched to 32 bit local heap\n");
2016
2017 return es->hloc;
2018}
2019
2020static INT EDIT_EM_GetLimitText(HWND hwnd,EDITSTATE *es)
2021{
2022 return es->buffer_limit;
2023}
2024
2025/*********************************************************************
2026 *
2027 * EM_GETLINE
2028 *
2029 */
2030static INT EDIT_EM_GetLine(HWND hwnd, EDITSTATE *es, INT line, LPSTR lpch)
2031{
2032 LPSTR src;
2033 INT len;
2034 INT i;
2035
2036 if (!lpch || (*(WORD*)lpch == 0)) return 0;
2037
2038 if (es->style & ES_MULTILINE) {
2039 if (line >= es->line_count)
2040 return 0;
2041 } else
2042 line = 0;
2043 i = EDIT_EM_LineIndex(hwnd, es, line);
2044 src = es->text + i;
2045 len = MIN(*(WORD *)lpch, EDIT_EM_LineLength(hwnd, es, i));
2046 for (i = 0 ; i < len ; i++) {
2047 *lpch = *src;
2048 src++;
2049 lpch++;
2050 }
2051 //SvL: Terminate string
2052 *lpch = 0;
2053 return (LRESULT)len;
2054}
2055
2056static INT EDIT_EM_GetLineCount(HWND hwnd,EDITSTATE *es)
2057{
2058 return (es->style & ES_MULTILINE) ? es->line_count : 1;
2059}
2060
2061static LONG EDIT_EM_GetMargins(HWND hwnd,EDITSTATE *es)
2062{
2063 return MAKELONG(es->left_margin, es->right_margin);
2064}
2065
2066static BOOL EDIT_EM_GetModify(HWND hwnd,EDITSTATE *es)
2067{
2068 return ((es->flags & EF_MODIFIED) != 0);
2069}
2070
2071static CHAR EDIT_EM_GetPasswordChar(HWND hwnd,EDITSTATE *es)
2072{
2073 return es->password_char;
2074}
2075
2076static VOID EDIT_EM_GetRect(HWND hwnd,EDITSTATE *es,LPRECT lprc)
2077{
2078 if (lprc) CopyRect(lprc,&es->format_rect);
2079}
2080
2081/*********************************************************************
2082 *
2083 * EM_GETSEL
2084 *
2085 */
2086static LRESULT EDIT_EM_GetSel(HWND hwnd, EDITSTATE *es, LPUINT start, LPUINT end)
2087{
2088 UINT s = es->selection_start;
2089 UINT e = es->selection_end;
2090
2091 ORDER_UINT(s, e);
2092
2093 if (start)
2094 *start = s;
2095 if (end)
2096 *end = e;
2097 return MAKELONG(s, e);
2098}
2099
2100/*********************************************************************
2101 *
2102 * EM_GETTHUMB
2103 */
2104static LRESULT EDIT_EM_GetThumb(HWND hwnd, EDITSTATE *es)
2105{
2106 SCROLLINFO si;
2107
2108 if (!(es->style & ES_MULTILINE)) return 0;
2109
2110 si.cbSize = sizeof(si);
2111 si.fMask = SIF_TRACKPOS;
2112 return GetScrollInfo(hwnd,SB_VERT,&si) ? si.nTrackPos:0;
2113}
2114
2115static PVOID EDIT_EM_GetWordbreakProc(HWND hwnd,EDITSTATE *es)
2116{
2117 return es->word_break_procA;
2118}
2119
2120/*********************************************************************
2121 *
2122 * EM_LINEFROMCHAR
2123 *
2124 */
2125static INT EDIT_EM_LineFromChar(HWND hwnd, EDITSTATE *es, INT index)
2126{
2127 INT line;
2128 LINEDEF *line_def;
2129
2130 if (!(es->style & ES_MULTILINE))
2131 return 0;
2132 if (index > lstrlenA(es->text))
2133 return es->line_count - 1;
2134 if (index == -1)
2135 index = MIN(es->selection_start, es->selection_end); //selection_end == caret pos
2136
2137 line = 0;
2138 line_def = es->first_line_def;
2139 index -= line_def->length;
2140 while ((index >= 0) && line_def->next) {
2141 line++;
2142 line_def = line_def->next;
2143 index -= line_def->length;
2144 }
2145 return line;
2146}
2147
2148
2149/*********************************************************************
2150 *
2151 * EM_LINEINDEX
2152 *
2153 */
2154static INT EDIT_EM_LineIndex(HWND hwnd, EDITSTATE *es, INT line)
2155{
2156 INT line_index;
2157 LINEDEF *line_def;
2158
2159 if (!(es->style & ES_MULTILINE))
2160 return 0;
2161 if (line >= es->line_count)
2162 return -1;
2163
2164 line_index = 0;
2165 line_def = es->first_line_def;
2166 if (line == -1) {
2167 INT index = es->selection_end - line_def->length;
2168 while ((index >= 0) && line_def->next) {
2169 line_index += line_def->length;
2170 line_def = line_def->next;
2171 index -= line_def->length;
2172 }
2173 } else {
2174 while (line > 0) {
2175 line_index += line_def->length;
2176 line_def = line_def->next;
2177 line--;
2178 }
2179 }
2180 return line_index;
2181}
2182
2183
2184/*********************************************************************
2185 *
2186 * EM_LINELENGTH
2187 *
2188 */
2189static INT EDIT_EM_LineLength(HWND hwnd, EDITSTATE *es, INT index)
2190{
2191 LINEDEF *line_def;
2192
2193 if (!(es->style & ES_MULTILINE))
2194 return lstrlenA(es->text);
2195
2196 if (index == -1)
2197 {
2198 INT sl = EDIT_EM_LineFromChar(hwnd,es,MIN(es->selection_start,es->selection_end));
2199 INT el = EDIT_EM_LineFromChar(hwnd,es,MAX(es->selection_start,es->selection_end));
2200
2201 if (sl == el)
2202 return EDIT_EM_LineLength(hwnd,es,sl)+es->selection_start-es->selection_end;
2203 else
2204 return es->selection_start+EDIT_EM_LineLength(hwnd,es,el)-es->selection_end;
2205 }
2206 line_def = es->first_line_def;
2207 index -= line_def->length;
2208 while ((index >= 0) && line_def->next) {
2209 line_def = line_def->next;
2210 index -= line_def->length;
2211 }
2212 return line_def->net_length;
2213}
2214
2215static VOID EDIT_UpdateScrollBars(HWND hwnd,EDITSTATE *es,BOOL updateHorz,BOOL updateVert)
2216{
2217 if (updateHorz && (es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
2218 {
2219 SCROLLINFO si;
2220 INT fw = es->format_rect.right - es->format_rect.left;
2221
2222 si.cbSize = sizeof(SCROLLINFO);
2223 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
2224 si.nMin = 0;
2225 si.nMax = es->text_width + fw - 1;
2226 si.nPage = fw;
2227 si.nPos = es->x_offset;
2228 SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2229 }
2230
2231 if (updateVert && (es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
2232 {
2233 INT vlc = (es->format_rect.bottom-es->format_rect.top)/es->line_height;
2234 SCROLLINFO si;
2235
2236 si.cbSize = sizeof(SCROLLINFO);
2237 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
2238 si.nMin = 0;
2239 si.nMax = es->line_count + vlc - 2;
2240 si.nPage = vlc;
2241 si.nPos = es->y_offset;
2242 SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2243 }
2244}
2245
2246
2247/*********************************************************************
2248 *
2249 * EM_LINESCROLL
2250 *
2251 * FIXME: dx is in average character widths
2252 * However, we assume it is in pixels when we use this
2253 * function internally
2254 *
2255 */
2256static BOOL EDIT_EM_LineScroll(HWND hwnd, EDITSTATE *es, INT dx, INT dy)
2257{
2258 INT nyoff;
2259 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2260
2261 if (!(es->style & ES_MULTILINE))
2262 return FALSE;
2263
2264 if (-dx > es->x_offset)
2265 dx = -es->x_offset;
2266 if (dx > es->text_width - es->x_offset)
2267 dx = es->text_width - es->x_offset;
2268 nyoff = MAX(0, es->y_offset + dy);
2269
2270 //SvL: If nyoff > nr lines in control -> last line in control
2271 // window should show last line of control
2272 // Wine code shows last line at the top of the control
2273 // (Quake 3 startup edit control shows the problem)
2274 if (nyoff >= es->line_count) {
2275 if(es->line_count <= vlc) {
2276 nyoff = es->y_offset; //no need to scroll
2277 }
2278 else nyoff = es->line_count - vlc - 1;
2279 }
2280 dy = (es->y_offset - nyoff) * es->line_height;
2281 if (dx || dy)
2282 {
2283 RECT rc1;
2284 RECT rc;
2285
2286 if (dx && !(es->flags & EF_HSCROLL_TRACK))
2287 EDIT_NOTIFY_PARENT(hwnd, EN_HSCROLL);
2288 if (dy && !(es->flags & EF_VSCROLL_TRACK))
2289 EDIT_NOTIFY_PARENT(hwnd, EN_VSCROLL);
2290
2291 GetClientRect(hwnd, &rc1);
2292 IntersectRect(&rc, &rc1, &es->format_rect);
2293
2294 ScrollWindowEx(hwnd,-dx,dy,NULL,&rc,(HRGN)NULL,NULL,SW_INVALIDATE);
2295 es->y_offset = nyoff;
2296 es->x_offset += dx;
2297 EDIT_UpdateScrollBars(hwnd,es,dx,dy);
2298 }
2299
2300 return TRUE;
2301}
2302
2303
2304/*********************************************************************
2305 *
2306 * EM_POSFROMCHAR
2307 *
2308 */
2309static LRESULT EDIT_EM_PosFromChar(HWND hwnd,HDC dc, EDITSTATE *es, INT index, BOOL after_wrap)
2310{
2311 INT len = lstrlenA(es->text);
2312 INT l;
2313 INT li;
2314 INT x;
2315 INT y = 0;
2316 BOOL createdDC = FALSE;
2317 HFONT old_font = 0;
2318 SIZE size;
2319
2320 index = MIN(index, len);
2321 if (!dc)
2322 {
2323 dc = GetDC(hwnd);
2324 if (es->font)
2325 old_font = SelectObject(dc, es->font);
2326 createdDC = TRUE;
2327 }
2328 if (es->style & ES_MULTILINE) {
2329 l = EDIT_EM_LineFromChar(hwnd, es, index);
2330 y = (l - es->y_offset) * es->line_height;
2331 li = EDIT_EM_LineIndex(hwnd, es, l);
2332 if (after_wrap && (li == index) && l) {
2333 INT l2 = l - 1;
2334 LINEDEF *line_def = es->first_line_def;
2335 while (l2) {
2336 line_def = line_def->next;
2337 l2--;
2338 }
2339 if (line_def->ending == END_WRAP) {
2340 l--;
2341 y -= es->line_height;
2342 li = EDIT_EM_LineIndex(hwnd, es, l);
2343 }
2344 }
2345 x = LOWORD(GetTabbedTextExtentA(dc, es->text + li, index - li,
2346 es->tabs_count, es->tabs)) - es->x_offset;
2347 } else
2348 {
2349 LPSTR text = EDIT_GetPasswordPointer_SL(hwnd, es);
2350
2351 GetTextExtentPoint32A(dc,text,index,&size);
2352 x = size.cx;
2353 if (es->x_offset)
2354 {
2355 GetTextExtentPoint32A(dc,text,es->x_offset,&size);
2356 x -= size.cx;
2357 }
2358 y = 0;
2359 if (es->style & ES_PASSWORD)
2360 HeapFree(es->heap, 0 ,text);
2361 }
2362 x += es->format_rect.left;
2363 y += es->format_rect.top;
2364 if (createdDC)
2365 {
2366 if (es->font)
2367 SelectObject(dc, old_font);
2368 ReleaseDC(hwnd, dc);
2369 }
2370 return MAKELONG((INT16)x, (INT16)y);
2371}
2372
2373BOOL EDIT_CheckNumber(CHAR *text)
2374{
2375 if (!text) return TRUE;
2376
2377 while (text[0] != 0)
2378 {
2379 if ((BYTE)text[0] < '0' || (BYTE)text[0] > '9') return FALSE;
2380 text++;
2381 }
2382
2383 return TRUE;
2384}
2385
2386/*********************************************************************
2387 *
2388 * EM_REPLACESEL
2389 *
2390 */
2391static void EDIT_EM_ReplaceSel(HWND hwnd, EDITSTATE *es, BOOL can_undo, LPCSTR lpsz_replace)
2392{
2393 INT strl = lstrlenA(lpsz_replace);
2394 INT tl = lstrlenA(es->text);
2395 INT utl;
2396 UINT s;
2397 UINT e;
2398 INT i;
2399 LPSTR p;
2400
2401 s = es->selection_start;
2402 e = es->selection_end;
2403
2404 if ((s == e) && !strl)
2405 return;
2406
2407 ORDER_UINT(s, e);
2408
2409 if (!EDIT_MakeFit(hwnd, es, tl - (e - s) + strl))
2410 return;
2411
2412 if (e != s) {
2413 /* there is something to be deleted */
2414 if (can_undo) {
2415 utl = lstrlenA(es->undo_text);
2416 if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
2417 /* undo-buffer is extended to the right */
2418 EDIT_MakeUndoFit(hwnd, es, utl + e - s);
2419 lstrcpynA(es->undo_text + utl, es->text + s, e - s + 1);
2420 } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
2421 /* undo-buffer is extended to the left */
2422 EDIT_MakeUndoFit(hwnd, es, utl + e - s);
2423 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
2424 p[e - s] = p[0];
2425 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
2426 p[i] = (es->text + s)[i];
2427 es->undo_position = s;
2428 } else {
2429 /* new undo-buffer */
2430 EDIT_MakeUndoFit(hwnd, es, e - s);
2431 lstrcpynA(es->undo_text, es->text + s, e - s + 1);
2432 es->undo_position = s;
2433 }
2434 /* any deletion makes the old insertion-undo invalid */
2435 es->undo_insert_count = 0;
2436 } else
2437 EDIT_EM_EmptyUndoBuffer(hwnd, es);
2438
2439 /* now delete */
2440 lstrcpyA(es->text + s, es->text + e);
2441 }
2442 if (strl)
2443 {
2444 if ((es->style & ES_NUMBER) && !EDIT_CheckNumber((CHAR*)lpsz_replace))
2445 MessageBeep(MB_ICONEXCLAMATION);
2446 else
2447 {
2448 /* there is an insertion */
2449 if (can_undo) {
2450 if ((s == es->undo_position) ||
2451 ((es->undo_insert_count) &&
2452 (s == es->undo_position + es->undo_insert_count)))
2453 /*
2454 * insertion is new and at delete position or
2455 * an extension to either left or right
2456 */
2457 es->undo_insert_count += strl;
2458 else {
2459 /* new insertion undo */
2460 es->undo_position = s;
2461 es->undo_insert_count = strl;
2462 /* new insertion makes old delete-buffer invalid */
2463 *es->undo_text = '\0';
2464 }
2465 } else
2466 EDIT_EM_EmptyUndoBuffer(hwnd, es);
2467
2468
2469 /* now insert */
2470 tl = lstrlenA(es->text);
2471 for (p = es->text + tl ; p >= es->text + s ; p--)
2472 p[strl] = p[0];
2473 for (i = 0 , p = es->text + s ; i < strl ; i++)
2474 p[i] = lpsz_replace[i];
2475
2476 if (es->style & ES_OEMCONVERT)
2477 {
2478 CHAR *text = (LPSTR)HeapAlloc(es->heap,0,strl);
2479
2480 CharToOemBuffA(lpsz_replace,text,strl);
2481 OemToCharBuffA(text,p,strl);
2482 HeapFree(es->heap,0,text);
2483 }
2484
2485 if(es->style & ES_UPPERCASE)
2486 CharUpperBuffA(p, strl);
2487 else if(es->style & ES_LOWERCASE)
2488 CharLowerBuffA(p, strl);
2489
2490 s += strl;
2491 }
2492 }
2493 /* FIXME: really inefficient */
2494 if (es->style & ES_MULTILINE)
2495 EDIT_BuildLineDefs_ML(hwnd,es);
2496
2497 EDIT_EM_SetSel(hwnd, es, s, s, FALSE);
2498
2499 es->flags |= EF_MODIFIED;
2500 es->flags |= EF_UPDATE;
2501 EDIT_EM_ScrollCaret(hwnd, es);
2502
2503 /* FIXME: really inefficient */
2504 EDIT_Refresh(hwnd,es,TRUE);
2505}
2506
2507
2508/*********************************************************************
2509 *
2510 * EM_SCROLL
2511 *
2512 */
2513static LRESULT EDIT_EM_Scroll(HWND hwnd, EDITSTATE *es, INT action)
2514{
2515 INT dy;
2516
2517 if (!(es->style & ES_MULTILINE))
2518 return (LRESULT)FALSE;
2519
2520 dy = 0;
2521
2522 switch (action) {
2523 case SB_LINEUP:
2524 if (es->y_offset)
2525 dy = -1;
2526 break;
2527 case SB_LINEDOWN:
2528 if (es->y_offset < es->line_count - 1)
2529 dy = 1;
2530 break;
2531 case SB_PAGEUP:
2532 if (es->y_offset)
2533 dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
2534 break;
2535 case SB_PAGEDOWN:
2536 if (es->y_offset < es->line_count - 1)
2537 dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2538 break;
2539 default:
2540 return (LRESULT)FALSE;
2541 }
2542 if (dy) {
2543 EDIT_NOTIFY_PARENT(hwnd, EN_VSCROLL);
2544 EDIT_EM_LineScroll(hwnd, es, 0, dy);
2545 }
2546 return MAKELONG((INT16)dy, (BOOL16)TRUE);
2547}
2548
2549
2550/*********************************************************************
2551 *
2552 * EM_SCROLLCARET
2553 *
2554 */
2555static void EDIT_EM_ScrollCaret(HWND hwnd, EDITSTATE *es)
2556{
2557 if (es->style & ES_MULTILINE) {
2558 INT l;
2559 INT li;
2560 INT vlc;
2561 INT ww;
2562 INT cw = es->char_width;
2563 INT x;
2564 INT dy = 0;
2565 INT dx = 0;
2566
2567 l = EDIT_EM_LineFromChar(hwnd, es, es->selection_end);
2568 li = EDIT_EM_LineIndex(hwnd, es, l);
2569 x = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, es->flags & EF_AFTER_WRAP));
2570 vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2571 if (l >= es->y_offset + vlc)
2572 dy = l - vlc + 1 - es->y_offset;
2573 if (l < es->y_offset)
2574 dy = l - es->y_offset;
2575 ww = es->format_rect.right - es->format_rect.left;
2576 if (x < es->format_rect.left)
2577 dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
2578 if (x > es->format_rect.right)
2579 dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
2580 if (dy || dx)
2581 EDIT_EM_LineScroll(hwnd, es, dx, dy);
2582 } else {
2583 INT x;
2584 INT goal;
2585 INT format_width;
2586
2587 if (!(es->style & ES_AUTOHSCROLL))
2588 return;
2589
2590 x = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, FALSE));
2591 format_width = es->format_rect.right - es->format_rect.left;
2592 if (x < es->format_rect.left)
2593 {
2594 goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
2595 do {
2596 es->x_offset--;
2597 x = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, FALSE));
2598 } while ((x < goal) && es->x_offset);
2599 /* FIXME: use ScrollWindow() somehow to improve performance */
2600 EDIT_Refresh(hwnd,es,TRUE);
2601 EDIT_UpdateScrollBars(hwnd,es,TRUE,FALSE);
2602 } else if (x > es->format_rect.right)
2603 {
2604 INT x_last;
2605 INT len = lstrlenA(es->text);
2606 goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
2607 do {
2608 es->x_offset++;
2609 x = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, FALSE));
2610 x_last = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, len, FALSE));
2611 } while ((x > goal) && (x_last > es->format_rect.right));
2612 /* FIXME: use ScrollWindow() somehow to improve performance */
2613 EDIT_Refresh(hwnd,es,TRUE);
2614 EDIT_UpdateScrollBars(hwnd,es,TRUE,FALSE);
2615 }
2616 }
2617}
2618
2619
2620/*********************************************************************
2621 *
2622 * EM_SETHANDLE
2623 *
2624 */
2625static void EDIT_EM_SetHandle(HWND hwnd, EDITSTATE *es, HLOCAL hloc)
2626{
2627 if (!(es->style & ES_MULTILINE))
2628 return;
2629
2630 if (!hloc) {
2631 //WARN_(edit)("called with NULL handle\n");
2632 return;
2633 }
2634
2635 EDIT_UnlockBuffer(hwnd, es, TRUE);
2636 /*
2637 * old buffer is freed by caller, unless
2638 * it is still in our own heap. (in that case
2639 * we free it, correcting the buggy caller.)
2640 */
2641 if (es->text)
2642 HeapFree(es->heap, 0, es->text);
2643
2644 es->hloc = hloc;
2645 es->text = NULL;
2646 es->buffer_size = LocalSize(es->hloc) - 1;
2647 EDIT_LockBuffer(hwnd, es);
2648
2649 if (es->text && (es->text[0] != 0))
2650 {
2651 if (es->style & ES_NUMBER)
2652 {
2653 //CB: todo
2654 }
2655
2656 if (es->style & ES_OEMCONVERT)
2657 {
2658 INT len = lstrlenA(es->text);
2659 CHAR *text = (LPSTR)HeapAlloc(es->heap,0,len);
2660
2661 CharToOemBuffA(es->text,text,len);
2662 OemToCharBuffA(text,es->text,len);
2663 HeapFree(es->heap,0,text);
2664 }
2665
2666 if(es->style & ES_UPPERCASE)
2667 CharUpperA(es->text);
2668 else if(es->style & ES_LOWERCASE)
2669 CharLowerA(es->text);
2670 }
2671
2672 es->x_offset = es->y_offset = 0;
2673 es->selection_start = es->selection_end = 0;
2674 EDIT_EM_EmptyUndoBuffer(hwnd, es);
2675 es->flags &= ~EF_MODIFIED;
2676 es->flags &= ~EF_UPDATE;
2677 EDIT_BuildLineDefs_ML(hwnd,es);
2678 EDIT_Refresh(hwnd,es,FALSE);
2679 EDIT_EM_ScrollCaret(hwnd, es);
2680 EDIT_UpdateScrollBars(hwnd,es,TRUE,TRUE);
2681}
2682
2683/*********************************************************************
2684 *
2685 * EM_SETLIMITTEXT
2686 *
2687 * FIXME: in WinNT maxsize is 0x7FFFFFFF / 0xFFFFFFFF
2688 * However, the windows version is not complied to yet in all of edit.c
2689 *
2690 */
2691static void EDIT_EM_SetLimitText(HWND hwnd, EDITSTATE *es, INT limit)
2692{
2693 if (es->style & ES_MULTILINE) {
2694 if (limit)
2695#ifdef __WIN32OS2__
2696 es->buffer_limit = limit;
2697#else
2698 es->buffer_limit = MIN(limit, BUFLIMIT_MULTI);
2699#endif
2700 else
2701 es->buffer_limit = BUFLIMIT_MULTI;
2702 } else {
2703 if (limit)
2704#ifdef __WIN32OS2__
2705 es->buffer_limit = MIN(limit, BUFLIMIT_SINGLE_NT);
2706#else
2707 es->buffer_limit = MIN(limit, BUFLIMIT_SINGLE);
2708#endif
2709 else
2710 es->buffer_limit = BUFLIMIT_SINGLE;
2711 }
2712}
2713
2714
2715/*********************************************************************
2716 *
2717 * EM_SETMARGINS
2718 *
2719 * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
2720 * action wParam despite what the docs say. EC_USEFONTINFO means one third
2721 * of the char's width, according to the new docs.
2722 *
2723 */
2724static void EDIT_EM_SetMargins(HWND hwnd, EDITSTATE *es, INT action,
2725 INT left, INT right)
2726{
2727 RECT r;
2728 INT oldLeft = es->left_margin,oldRight = es->right_margin;
2729
2730 if (action & EC_LEFTMARGIN) {
2731 if (left != EC_USEFONTINFO)
2732 es->left_margin = left;
2733 else
2734 es->left_margin = es->char_width / 3;
2735 }
2736
2737 if (action & EC_RIGHTMARGIN) {
2738 if (right != EC_USEFONTINFO)
2739 es->right_margin = right;
2740 else
2741 es->right_margin = es->char_width / 3;
2742 }
2743 //TRACE_(edit)("left=%d, right=%d\n", es->left_margin, es->right_margin);
2744
2745 if ((oldLeft != es->left_margin) || (oldRight != es->right_margin))
2746 {
2747 GetClientRect(hwnd, &r);
2748 EDIT_SetRectNP(hwnd, es, &r);
2749 if (es->style & ES_MULTILINE)
2750 EDIT_BuildLineDefs_ML(hwnd,es);
2751
2752 EDIT_Refresh(hwnd,es,FALSE);
2753 if (es->flags & EF_FOCUSED) {
2754 DestroyCaret();
2755 CreateCaret(hwnd, 0, 2, es->line_height);
2756 EDIT_SetCaretPos(hwnd, es, es->selection_end,
2757 es->flags & EF_AFTER_WRAP);
2758 ShowCaret(hwnd);
2759 }
2760 }
2761}
2762
2763static void EDIT_EM_SetModify(HWND hwnd,EDITSTATE *es,BOOL fModified)
2764{
2765 if (fModified)
2766 es->flags |= EF_MODIFIED;
2767 else
2768 es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
2769}
2770
2771/*********************************************************************
2772 *
2773 * EM_SETPASSWORDCHAR
2774 *
2775 */
2776static void EDIT_EM_SetPasswordChar(HWND hwnd, EDITSTATE *es, CHAR c)
2777{
2778 if (es->style & ES_MULTILINE)
2779 return;
2780
2781 if (es->password_char == c)
2782 return;
2783
2784 es->password_char = c;
2785 if (c) {
2786 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) | ES_PASSWORD);
2787 es->style |= ES_PASSWORD;
2788 } else {
2789 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) & ~ES_PASSWORD);
2790 es->style &= ~ES_PASSWORD;
2791 }
2792 EDIT_Refresh(hwnd,es,FALSE);
2793}
2794
2795static BOOL EDIT_EM_SetReadOnly(HWND hwnd,EDITSTATE *es,BOOL fReadOnly)
2796{
2797 if (fReadOnly)
2798 {
2799 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) | ES_READONLY);
2800 es->style |= ES_READONLY;
2801 } else
2802 {
2803 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) & ~ES_READONLY);
2804 es->style &= ~ES_READONLY;
2805 }
2806
2807 return TRUE;
2808}
2809
2810static void EDIT_EM_SetRect(HWND hwnd,EDITSTATE *es,LPRECT lprc)
2811{
2812 if ((es->style & ES_MULTILINE) && lprc)
2813 {
2814 EDIT_SetRectNP(hwnd,es,lprc);
2815 EDIT_Refresh(hwnd,es,FALSE);
2816 }
2817}
2818
2819static void EDIT_EM_SetRectNP(HWND hwnd,EDITSTATE *es,LPRECT lprc)
2820{
2821 if ((es->style & ES_MULTILINE) && lprc)
2822 EDIT_SetRectNP(hwnd,es,lprc);
2823}
2824
2825/*********************************************************************
2826 *
2827 * EDIT_EM_SetSel
2828 *
2829 * note: unlike the specs say: the order of start and end
2830 * _is_ preserved in Windows. (i.e. start can be > end)
2831 * In other words: this handler is OK
2832 *
2833 */
2834static void EDIT_EM_SetSel(HWND hwnd, EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
2835{
2836 UINT old_start = es->selection_start;
2837 UINT old_end = es->selection_end;
2838 UINT len = lstrlenA(es->text);
2839
2840 if (start == -1) {
2841 start = es->selection_end;
2842 end = es->selection_end;
2843 } else {
2844 start = MIN(start, len);
2845 end = MIN(end, len);
2846 }
2847 es->selection_start = start;
2848 es->selection_end = end;
2849 if (after_wrap)
2850 es->flags |= EF_AFTER_WRAP;
2851 else
2852 es->flags &= ~EF_AFTER_WRAP;
2853 if (es->flags & EF_FOCUSED)
2854 EDIT_SetCaretPos(hwnd, es, end, after_wrap);
2855/* This is little bit more efficient than before, not sure if it can be improved. FIXME? */
2856 ORDER_UINT(start, end);
2857 ORDER_UINT(end, old_end);
2858 ORDER_UINT(start, old_start);
2859 ORDER_UINT(old_start, old_end);
2860 if ((start == old_start) && (end == old_end)) return;
2861 if (end != old_start)
2862 {
2863/*
2864 * One can also do
2865 * ORDER_UINT32(end, old_start);
2866 * EDIT_InvalidateText(wnd, es, start, end);
2867 * EDIT_InvalidateText(wnd, es, old_start, old_end);
2868 * in place of the following if statement.
2869 */
2870 if (old_start > end )
2871 {
2872 EDIT_InvalidateText(hwnd, es, start, end);
2873 EDIT_InvalidateText(hwnd, es, old_start, old_end);
2874 }
2875 else
2876 {
2877 EDIT_InvalidateText(hwnd, es, start, old_start);
2878 EDIT_InvalidateText(hwnd, es, end, old_end);
2879 }
2880 }
2881 else EDIT_InvalidateText(hwnd, es, start, old_end);
2882}
2883
2884
2885/*********************************************************************
2886 *
2887 * EM_SETTABSTOPS
2888 *
2889 */
2890static BOOL EDIT_EM_SetTabStops(HWND hwnd, EDITSTATE *es, INT count, LPINT tabs)
2891{
2892 if (!(es->style & ES_MULTILINE))
2893 return FALSE;
2894 if (es->tabs)
2895 HeapFree(es->heap, 0, es->tabs);
2896 es->tabs_count = count;
2897 if (!count)
2898 es->tabs = NULL;
2899 else {
2900 es->tabs = (INT*)HeapAlloc(es->heap, 0, count * sizeof(INT));
2901 memcpy(es->tabs, tabs, count * sizeof(INT));
2902 }
2903 return TRUE;
2904}
2905
2906
2907/*********************************************************************
2908 *
2909 * EM_SETWORDBREAKPROC
2910 *
2911 */
2912static void EDIT_EM_SetWordBreakProc(HWND hwnd, EDITSTATE *es, EDITWORDBREAKPROCA wbp)
2913{
2914 if (es->word_break_procA == wbp)
2915 return;
2916
2917 es->word_break_procA = wbp;
2918 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
2919 EDIT_BuildLineDefs_ML(hwnd,es);
2920 EDIT_Refresh(hwnd,es,FALSE);
2921 }
2922}
2923
2924
2925/*********************************************************************
2926 *
2927 * EM_UNDO / WM_UNDO
2928 *
2929 */
2930static BOOL EDIT_EM_Undo(HWND hwnd, EDITSTATE *es)
2931{
2932 INT ulength = lstrlenA(es->undo_text);
2933 LPSTR utext = (LPSTR)HeapAlloc(es->heap, 0, ulength + 1);
2934
2935 lstrcpyA(utext, es->undo_text);
2936
2937 //TRACE_(edit)("before UNDO:insertion length = %d, deletion buffer = %s\n",
2938 // es->undo_insert_count, utext);
2939
2940 EDIT_EM_SetSel(hwnd, es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
2941 EDIT_EM_EmptyUndoBuffer(hwnd, es);
2942 EDIT_EM_ReplaceSel(hwnd, es, TRUE, utext);
2943 EDIT_EM_SetSel(hwnd, es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
2944 HeapFree(es->heap, 0, utext);
2945
2946 //TRACE_(edit)("after UNDO:insertion length = %d, deletion buffer = %s\n",
2947 // es->undo_insert_count, es->undo_text);
2948
2949 if (es->flags & EF_UPDATE) {
2950 es->flags &= ~EF_UPDATE;
2951 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
2952 }
2953
2954 return TRUE;
2955}
2956
2957static LRESULT EDIT_EM_SetIMEStatus(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam)
2958{
2959 if (wParam == EMSIS_COMPOSITIONSTRING)
2960 {
2961 //CB: todo
2962 }
2963
2964 return 0;
2965}
2966
2967static LRESULT EDIT_EM_GetIMEStatus(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam)
2968{
2969 //CB: todo
2970
2971 return 0; //default
2972}
2973
2974/*********************************************************************
2975 *
2976 * WM_CHAR
2977 *
2978 */
2979static void EDIT_WM_Char(HWND hwnd, EDITSTATE *es, CHAR c, DWORD key_data)
2980{
2981 BOOL control = GetKeyState(VK_CONTROL) & 0x8000;
2982 switch (c) {
2983 case '\r':
2984 /* If the edit doesn't want the return and it's not a multiline edit, do nothing */
2985 if(!(es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
2986 {
2987 MessageBeep(MB_ICONEXCLAMATION);
2988 break;
2989 }
2990 case '\n':
2991 if (es->style & ES_MULTILINE) {
2992 if (es->style & ES_READONLY) {
2993 EDIT_MoveHome(hwnd, es, FALSE);
2994 EDIT_MoveDown_ML(hwnd, es, FALSE);
2995 } else
2996 {
2997 EDIT_EM_ReplaceSel(hwnd, es, TRUE, "\r\n");
2998 if (es->flags & EF_UPDATE) {
2999 es->flags &= ~EF_UPDATE;
3000 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3001 }
3002 }
3003 }
3004 break;
3005 case '\t':
3006 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3007 {
3008 EDIT_EM_ReplaceSel(hwnd, es, TRUE, "\t");
3009 if (es->flags & EF_UPDATE) {
3010 es->flags &= ~EF_UPDATE;
3011 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3012 }
3013 }
3014 break;
3015 case VK_BACK:
3016 if (!(es->style & ES_READONLY) && !control) {
3017 if (es->selection_start != es->selection_end)
3018 EDIT_WM_Clear(hwnd, es);
3019 else {
3020 /* delete character left of caret */
3021 EDIT_EM_SetSel(hwnd, es, -1, 0, FALSE);
3022 EDIT_MoveBackward(hwnd, es, TRUE);
3023 EDIT_WM_Clear(hwnd, es);
3024 }
3025 }
3026 break;
3027//CB: are these three keys documented or Linux style???
3028 case 0x03: /* ^C */
3029 SendMessageA(hwnd, WM_COPY, 0, 0);
3030 break;
3031 case 0x16: /* ^V */
3032 SendMessageA(hwnd, WM_PASTE, 0, 0);
3033 break;
3034 case 0x18: /* ^X */
3035 SendMessageA(hwnd, WM_CUT, 0, 0);
3036 break;
3037
3038 default:
3039 if (!(es->style & ES_READONLY) && ((BYTE)c >= ' ') && (c != 127))
3040 {
3041 char str[2];
3042
3043 if (es->style & ES_NUMBER)
3044 {
3045 if (((BYTE)c < '0') || ((BYTE)c > '9')) {
3046 MessageBeep(MB_ICONEXCLAMATION);
3047 return;
3048 }
3049 }
3050 str[0] = c;
3051 str[1] = '\0';
3052 EDIT_EM_ReplaceSel(hwnd, es, TRUE, str);
3053 if (es->flags & EF_UPDATE)
3054 {
3055 es->flags &= ~EF_UPDATE;
3056 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3057 }
3058 } else MessageBeep(MB_ICONEXCLAMATION);
3059 break;
3060 }
3061}
3062
3063
3064/*********************************************************************
3065 *
3066 * WM_COMMAND
3067 *
3068 */
3069static void EDIT_WM_Command(HWND hwnd, EDITSTATE *es, INT code, INT id, HWND control)
3070{
3071 if (code || control)
3072 return;
3073
3074 switch (id) {
3075 case EM_UNDO:
3076 EDIT_EM_Undo(hwnd, es);
3077 break;
3078 case WM_CUT:
3079 EDIT_WM_Cut(hwnd, es);
3080 break;
3081 case WM_COPY:
3082 EDIT_WM_Copy(hwnd, es);
3083 break;
3084 case WM_PASTE:
3085 EDIT_WM_Paste(hwnd, es);
3086 break;
3087 case WM_CLEAR:
3088 EDIT_WM_Clear(hwnd, es);
3089 break;
3090 case EM_SETSEL:
3091 EDIT_EM_SetSel(hwnd, es, 0, -1, FALSE);
3092 EDIT_EM_ScrollCaret(hwnd, es);
3093 break;
3094 default:
3095 //ERR_(edit)("unknown menu item, please report\n");
3096 break;
3097 }
3098}
3099
3100
3101/*********************************************************************
3102 *
3103 * WM_CONTEXTMENU
3104 *
3105 * Note: the resource files resource/sysres_??.rc cannot define a
3106 * single popup menu. Hence we use a (dummy) menubar
3107 * containing the single popup menu as its first item.
3108 *
3109 * FIXME: the message identifiers have been chosen arbitrarily,
3110 * hence we use MF_BYPOSITION.
3111 * We might as well use the "real" values (anybody knows ?)
3112 * The menu definition is in resources/sysres_??.rc.
3113 * Once these are OK, we better use MF_BYCOMMAND here
3114 * (as we do in EDIT_WM_Command()).
3115 *
3116 */
3117static void EDIT_WM_ContextMenu(HWND hwnd, EDITSTATE *es, HWND hwndBtn, INT x, INT y)
3118{
3119 HMENU menu = LoadMenuA(GetModuleHandleA("USER32"), "EDITMENU");
3120 HMENU popup = GetSubMenu(menu, 0);
3121 UINT start = es->selection_start;
3122 UINT end = es->selection_end;
3123
3124 ORDER_UINT(start, end);
3125
3126 /* undo */
3127 EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(hwnd, es) ? MF_ENABLED : MF_GRAYED));
3128 /* cut */
3129 EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & (ES_PASSWORD | ES_READONLY)) ? MF_ENABLED : MF_GRAYED));
3130 /* copy */
3131 EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3132 /* paste */
3133 EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_TEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3134 /* delete */
3135 EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3136 /* select all */
3137 EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != lstrlenA(es->text)) ? MF_ENABLED : MF_GRAYED));
3138
3139 TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, hwnd, NULL);
3140 DestroyMenu(menu);
3141}
3142
3143
3144/*********************************************************************
3145 *
3146 * WM_COPY
3147 *
3148 */
3149static void EDIT_WM_Copy(HWND hwnd, EDITSTATE *es)
3150{
3151 INT s = es->selection_start;
3152 INT e = es->selection_end;
3153 HGLOBAL hdst;
3154 LPSTR dst;
3155
3156 if (e == s)
3157 return;
3158 ORDER_INT(s, e);
3159 hdst = GlobalAlloc(GMEM_MOVEABLE, (DWORD)(e - s + 1));
3160 dst = (LPSTR)GlobalLock(hdst);
3161 lstrcpynA(dst, es->text + s, e - s + 1);
3162 GlobalUnlock(hdst);
3163 OpenClipboard(hwnd);
3164 EmptyClipboard();
3165 SetClipboardData(CF_TEXT, hdst);
3166 CloseClipboard();
3167}
3168
3169
3170/*********************************************************************
3171 *
3172 * WM_CREATE
3173 *
3174 */
3175static LRESULT EDIT_WM_Create(HWND hwnd, EDITSTATE *es, LPCREATESTRUCTA cs)
3176{
3177 /*
3178 * To initialize some final structure members, we call some helper
3179 * functions. However, since the EDITSTATE is not consistent (i.e.
3180 * not fully initialized), we should be very careful which
3181 * functions can be called, and in what order.
3182 */
3183 EDIT_WM_SetFont(hwnd, es, 0, FALSE);
3184 EDIT_EM_EmptyUndoBuffer(hwnd, es);
3185 if (cs->lpszName && *(cs->lpszName) != '\0') {
3186 EDIT_EM_ReplaceSel(hwnd, es, FALSE, cs->lpszName);
3187 /* if we insert text to the editline, the text scrolls out
3188 * of the window, as the caret is placed after the insert
3189 * pos normally; thus we reset es->selection... to 0 and
3190 * update caret
3191 */
3192 es->selection_start = es->selection_end = 0;
3193 EDIT_EM_ScrollCaret(hwnd, es);
3194 if (es->flags & EF_UPDATE) {
3195 es->flags &= ~EF_UPDATE;
3196 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3197 }
3198 }
3199 return 0;
3200}
3201
3202
3203/*********************************************************************
3204 *
3205 * WM_DESTROY
3206 *
3207 */
3208static void EDIT_WM_Destroy(HWND hwnd, EDITSTATE *es)
3209{
3210 if (!es) /* Protect against multiple destroy messages */
3211 return;
3212
3213 if (es->hloc) {
3214 while (LocalUnlock(es->hloc)) ;
3215 LocalFree(es->hloc);
3216 }
3217
3218 HeapDestroy(es->heap);
3219 HeapFree(GetProcessHeap(), 0, es);
3220 SetInfoPtr(hwnd,0);
3221}
3222
3223
3224/*********************************************************************
3225 *
3226 * WM_ERASEBKGND
3227 *
3228 */
3229static LRESULT EDIT_WM_EraseBkGnd(HWND hwnd, EDITSTATE *es, HDC dc)
3230{
3231 HBRUSH brush;
3232 RECT rc;
3233
3234 HideCaret(hwnd);
3235
3236 if (!es->bEnableState || (es->style & ES_READONLY))
3237 brush = (HBRUSH)EDIT_SEND_CTLCOLORSTATIC(hwnd, dc);
3238 else
3239 brush = (HBRUSH)EDIT_SEND_CTLCOLOR(hwnd, dc);
3240
3241 if (!brush)
3242 brush = (HBRUSH)GetStockObject(WHITE_BRUSH);
3243
3244 GetClientRect(hwnd, &rc);
3245 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3246 GetClipBox(dc, &rc);
3247 /*
3248 * FIXME: specs say that we should UnrealizeObject() the brush,
3249 * but the specs of UnrealizeObject() say that we shouldn't
3250 * unrealize a stock object. The default brush that
3251 * DefWndProc() returns is ... a stock object.
3252 */
3253 FillRect(dc, &rc, brush);
3254
3255 ShowCaret(hwnd);
3256
3257 return -1;
3258}
3259
3260
3261/*********************************************************************
3262 *
3263 * WM_GETTEXT
3264 *
3265 */
3266static INT EDIT_WM_GetText(HWND hwnd, EDITSTATE *es, INT count, LPSTR text)
3267{
3268 INT len;
3269
3270 if (es->text == NULL) // the only case of failure i can imagine
3271 return 0;
3272
3273 len = min(count, lstrlenA(es->text)+1); // determine length
3274 lstrcpynA(text, es->text, len); // copy as much as possible
3275 return len;
3276}
3277
3278
3279/*********************************************************************
3280 *
3281 * EDIT_HScroll_Hack
3282 *
3283 * 16 bit notepad needs this. Actually it is not _our_ hack,
3284 * it is notepad's. Notepad is sending us scrollbar messages with
3285 * undocumented parameters without us even having a scrollbar ... !?!?
3286 *
3287 */
3288static LRESULT EDIT_HScroll_Hack(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar)
3289{
3290 INT dx = 0;
3291 INT fw = es->format_rect.right - es->format_rect.left;
3292 LRESULT ret = 0;
3293
3294 if (!(es->flags & EF_HSCROLL_HACK)) {
3295 //ERR_(edit)("hacked WM_HSCROLL handler invoked\n");
3296 //ERR_(edit)(" if you are _not_ running 16 bit notepad, please report\n");
3297 //ERR_(edit)(" (this message is only displayed once per edit control)\n");
3298 es->flags |= EF_HSCROLL_HACK;
3299 }
3300
3301 switch (action) {
3302 case SB_LINELEFT:
3303 if (es->x_offset)
3304 dx = -es->char_width;
3305 break;
3306 case SB_LINERIGHT:
3307 if (es->x_offset < es->text_width)
3308 dx = es->char_width;
3309 break;
3310 case SB_PAGELEFT:
3311 if (es->x_offset)
3312 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3313 break;
3314 case SB_PAGERIGHT:
3315 if (es->x_offset < es->text_width)
3316 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3317 break;
3318 case SB_LEFT:
3319 if (es->x_offset)
3320 dx = -es->x_offset;
3321 break;
3322 case SB_RIGHT:
3323 if (es->x_offset < es->text_width)
3324 dx = es->text_width - es->x_offset;
3325 break;
3326 case SB_THUMBTRACK:
3327 es->flags |= EF_HSCROLL_TRACK;
3328 dx = pos * es->text_width / 100 - es->x_offset;
3329 break;
3330 case SB_THUMBPOSITION:
3331 es->flags &= ~EF_HSCROLL_TRACK;
3332 if (!(dx = pos * es->text_width / 100 - es->x_offset))
3333 EDIT_NOTIFY_PARENT(hwnd, EN_HSCROLL);
3334 break;
3335 case SB_ENDSCROLL:
3336 break;
3337
3338 default:
3339 //ERR_(edit)("undocumented (hacked) WM_HSCROLL parameter, please report\n");
3340 return 0;
3341 }
3342 if (dx)
3343 EDIT_EM_LineScroll(hwnd, es, dx, 0);
3344 return ret;
3345}
3346
3347
3348/*********************************************************************
3349 *
3350 * WM_HSCROLL
3351 *
3352 */
3353static LRESULT EDIT_WM_HScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar)
3354{
3355 INT dx;
3356 INT fw;
3357
3358 if (!(es->style & ES_MULTILINE))
3359 return 0;
3360
3361 if (!(es->style & ES_AUTOHSCROLL))
3362 return 0;
3363
3364 if (!(es->style & WS_HSCROLL))
3365 return EDIT_HScroll_Hack(hwnd, es, action, pos, scroll_bar);
3366
3367 dx = 0;
3368 fw = es->format_rect.right - es->format_rect.left;
3369 switch (action) {
3370 case SB_LINELEFT:
3371 if (es->x_offset)
3372 dx = -es->char_width;
3373 break;
3374 case SB_LINERIGHT:
3375 if (es->x_offset < es->text_width)
3376 dx = es->char_width;
3377 break;
3378 case SB_PAGELEFT:
3379 if (es->x_offset)
3380 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3381 break;
3382 case SB_PAGERIGHT:
3383 if (es->x_offset < es->text_width)
3384 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3385 break;
3386 case SB_LEFT:
3387 if (es->x_offset)
3388 dx = -es->x_offset;
3389 break;
3390 case SB_RIGHT:
3391 if (es->x_offset < es->text_width)
3392 dx = es->text_width - es->x_offset;
3393 break;
3394 case SB_THUMBTRACK:
3395 es->flags |= EF_HSCROLL_TRACK;
3396 dx = pos - es->x_offset;
3397 break;
3398 case SB_THUMBPOSITION:
3399 es->flags &= ~EF_HSCROLL_TRACK;
3400 if (!(dx = pos - es->x_offset)) {
3401 SetScrollPos(hwnd, SB_HORZ, pos, TRUE);
3402 EDIT_NOTIFY_PARENT(hwnd, EN_HSCROLL);
3403 }
3404 break;
3405 case SB_ENDSCROLL:
3406 break;
3407
3408 default:
3409 //ERR_(edit)("undocumented WM_HSCROLL parameter, please report\n");
3410 return 0;
3411 }
3412 if (dx)
3413 EDIT_EM_LineScroll(hwnd, es, dx, 0);
3414 return 0;
3415}
3416
3417
3418/*********************************************************************
3419 *
3420 * EDIT_CheckCombo
3421 *
3422 */
3423static BOOL EDIT_CheckCombo(HWND hwnd, EDITSTATE *es, UINT msg, INT key, DWORD key_data)
3424{
3425 HWND hLBox = es->hwndListBox;
3426 HWND hCombo;
3427 BOOL bDropped;
3428 int nEUI;
3429
3430 if (!hLBox)
3431 return FALSE;
3432
3433 hCombo = GetParent(hwnd);
3434 bDropped = TRUE;
3435 nEUI = 0;
3436
3437 //TRACE_(combo)("[%04x]: handling msg %04x (%04x)\n",
3438 // wnd->hwndSelf, (UINT16)msg, (UINT16)key);
3439
3440 if (key == VK_UP || key == VK_DOWN)
3441 {
3442 if (SendMessageA(hCombo, CB_GETEXTENDEDUI, 0, 0))
3443 nEUI = 1;
3444
3445 if (msg == WM_KEYDOWN || nEUI)
3446 bDropped = (BOOL)SendMessageA(hCombo, CB_GETDROPPEDSTATE, 0, 0);
3447 }
3448
3449 switch (msg)
3450 {
3451 case WM_KEYDOWN:
3452 if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
3453 {
3454 /* make sure ComboLBox pops up */
3455 SendMessageA(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
3456 key = VK_F4;
3457 nEUI = 2;
3458 }
3459
3460 SendMessageA(hLBox, WM_KEYDOWN, (WPARAM)key, 0);
3461 break;
3462
3463 case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
3464 if (nEUI)
3465 SendMessageA(hCombo, CB_SHOWDROPDOWN, bDropped ? FALSE : TRUE, 0);
3466 else
3467 SendMessageA(hLBox, WM_KEYDOWN, (WPARAM)VK_F4, 0);
3468 break;
3469 }
3470
3471 if(nEUI == 2)
3472 SendMessageA(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
3473
3474 return TRUE;
3475}
3476
3477/*********************************************************************
3478 *
3479 * WM_KEYDOWN
3480 *
3481 * Handling of special keys that don't produce a WM_CHAR
3482 * (i.e. non-printable keys) & Backspace & Delete
3483 *
3484 */
3485static LRESULT EDIT_WM_KeyDown(HWND hwnd, EDITSTATE *es, INT key, DWORD key_data)
3486{
3487 BOOL shift;
3488 BOOL control;
3489
3490 if (GetKeyState(VK_MENU) & 0x8000)
3491 return 0;
3492
3493 shift = GetKeyState(VK_SHIFT) & 0x8000;
3494 control = GetKeyState(VK_CONTROL) & 0x8000;
3495
3496 switch (key) {
3497 case VK_F4:
3498 case VK_UP:
3499 if (EDIT_CheckCombo(hwnd,es, WM_KEYDOWN, key, key_data) || key == VK_F4)
3500 break;
3501 /* fall through */
3502 case VK_LEFT:
3503 if ((es->style & ES_MULTILINE) && (key == VK_UP))
3504 EDIT_MoveUp_ML(hwnd, es, shift);
3505 else
3506 if (control)
3507 EDIT_MoveWordBackward(hwnd, es, shift);
3508 else
3509 EDIT_MoveBackward(hwnd, es, shift);
3510 break;
3511 case VK_DOWN:
3512 if (EDIT_CheckCombo(hwnd,es, WM_KEYDOWN, key, key_data))
3513 break;
3514 /* fall through */
3515 case VK_RIGHT:
3516 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
3517 EDIT_MoveDown_ML(hwnd, es, shift);
3518 else if (control)
3519 EDIT_MoveWordForward(hwnd, es, shift);
3520 else
3521 EDIT_MoveForward(hwnd, es, shift);
3522 break;
3523 case VK_HOME:
3524 EDIT_MoveHome(hwnd, es, shift);
3525 break;
3526 case VK_END:
3527 EDIT_MoveEnd(hwnd, es, shift);
3528 break;
3529 case VK_PRIOR:
3530 if (es->style & ES_MULTILINE)
3531 EDIT_MovePageUp_ML(hwnd, es, shift);
3532 else
3533 EDIT_CheckCombo(hwnd, es, WM_KEYDOWN, key, key_data);
3534 break;
3535 case VK_NEXT:
3536 if (es->style & ES_MULTILINE)
3537 EDIT_MovePageDown_ML(hwnd, es, shift);
3538 else
3539 EDIT_CheckCombo(hwnd, es, WM_KEYDOWN, key, key_data);
3540 break;
3541 case VK_DELETE:
3542 if (!(es->style & ES_READONLY) && !(shift && control)) {
3543 if (es->selection_start != es->selection_end) {
3544 if (shift)
3545 EDIT_WM_Cut(hwnd, es);
3546 else
3547 EDIT_WM_Clear(hwnd, es);
3548 } else {
3549 if (shift) {
3550 /* delete character left of caret */
3551 EDIT_EM_SetSel(hwnd, es, -1, 0, FALSE);
3552 EDIT_MoveBackward(hwnd, es, TRUE);
3553 EDIT_WM_Clear(hwnd, es);
3554 } else if (control) {
3555 /* delete to end of line */
3556 EDIT_EM_SetSel(hwnd, es, -1, 0, FALSE);
3557 EDIT_MoveEnd(hwnd, es, TRUE);
3558 EDIT_WM_Clear(hwnd, es);
3559 } else {
3560 /* delete character right of caret */
3561 EDIT_EM_SetSel(hwnd, es, -1, 0, FALSE);
3562 EDIT_MoveForward(hwnd, es, TRUE);
3563 EDIT_WM_Clear(hwnd, es);
3564 }
3565 }
3566 }
3567 break;
3568 case VK_INSERT:
3569 if (shift) {
3570 if (!(es->style & ES_READONLY))
3571 EDIT_WM_Paste(hwnd, es);
3572 } else if (control)
3573 EDIT_WM_Copy(hwnd, es);
3574 break;
3575 case VK_RETURN:
3576 /* If the edit doesn't want the return send a message to the default object */
3577 if(!(es->style & ES_WANTRETURN))
3578 {
3579 HWND hwndParent = GetParent(hwnd);
3580 DWORD dw = SendMessageA( hwndParent, DM_GETDEFID, 0, 0 );
3581 if (HIWORD(dw) == DC_HASDEFID)
3582 {
3583 SendMessageA( hwndParent, WM_COMMAND,
3584 MAKEWPARAM( LOWORD(dw), BN_CLICKED ),
3585 (LPARAM)GetDlgItem( hwndParent, LOWORD(dw) ) );
3586 }
3587 }
3588 break;
3589 }
3590 return 0;
3591}
3592
3593
3594/*********************************************************************
3595 *
3596 * WM_KILLFOCUS
3597 *
3598 */
3599static LRESULT EDIT_WM_KillFocus(HWND hwnd, EDITSTATE *es, HWND window_getting_focus)
3600{
3601 es->flags &= ~EF_FOCUSED;
3602 DestroyCaret();
3603 if(!(es->style & ES_NOHIDESEL))
3604 EDIT_InvalidateText(hwnd, es, es->selection_start, es->selection_end);
3605 EDIT_NOTIFY_PARENT(hwnd, EN_KILLFOCUS);
3606 return 0;
3607}
3608
3609
3610/*********************************************************************
3611 *
3612 * WM_LBUTTONDBLCLK
3613 *
3614 * The caret position has been set on the WM_LBUTTONDOWN message
3615 *
3616 */
3617static LRESULT EDIT_WM_LButtonDblClk(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
3618{
3619 INT s;
3620 INT e = es->selection_end;
3621 INT l;
3622 INT li;
3623 INT ll;
3624
3625 if (!(es->flags & EF_FOCUSED))
3626 return 0;
3627
3628 l = EDIT_EM_LineFromChar(hwnd, es, e);
3629 li = EDIT_EM_LineIndex(hwnd, es, l);
3630 ll = EDIT_EM_LineLength(hwnd, es, e);
3631 s = li + EDIT_CallWordBreakProc (hwnd, es, li, e - li, ll, WB_LEFT);
3632 e = li + EDIT_CallWordBreakProc(hwnd, es, li, e - li, ll, WB_RIGHT);
3633 EDIT_EM_SetSel(hwnd, es, s, e, FALSE);
3634 EDIT_EM_ScrollCaret(hwnd, es);
3635 return 0;
3636}
3637
3638
3639/*********************************************************************
3640 *
3641 * WM_LBUTTONDOWN
3642 *
3643 */
3644static LRESULT EDIT_WM_LButtonDown(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
3645{
3646 INT e;
3647 BOOL after_wrap;
3648
3649 if (!(es->flags & EF_FOCUSED))
3650 SetFocus(hwnd);
3651
3652 es->bCaptureState = TRUE;
3653 SetCapture(hwnd);
3654 EDIT_ConfinePoint(hwnd, es, &x, &y);
3655 e = EDIT_CharFromPos(hwnd, es, x, y, &after_wrap);
3656 EDIT_EM_SetSel(hwnd, es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
3657 EDIT_EM_ScrollCaret(hwnd, es);
3658 es->region_posx = es->region_posy = 0;
3659 SetTimer(hwnd, 0, 100, NULL);
3660 return 0;
3661}
3662
3663
3664/*********************************************************************
3665 *
3666 * WM_LBUTTONUP
3667 *
3668 */
3669static LRESULT EDIT_WM_LButtonUp(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
3670{
3671 if (es->bCaptureState)
3672 {
3673 KillTimer(hwnd,0);
3674 ReleaseCapture();
3675 }
3676 es->bCaptureState = FALSE;
3677
3678 return 0;
3679}
3680
3681static LRESULT EDIT_WM_CaptureChanged(HWND hwnd,EDITSTATE *es)
3682{
3683 if (es->bCaptureState) KillTimer(hwnd,0);
3684 es->bCaptureState = FALSE;
3685
3686 return 0;
3687}
3688
3689/*********************************************************************
3690 *
3691 * WM_MOUSEMOVE
3692 *
3693 */
3694static LRESULT EDIT_WM_MouseMove(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
3695{
3696 INT e;
3697 BOOL after_wrap;
3698 INT prex, prey;
3699
3700 if (!es->bCaptureState) return 0;
3701
3702 /*
3703 * FIXME: gotta do some scrolling if outside client
3704 * area. Maybe reset the timer ?
3705 */
3706 prex = x; prey = y;
3707 EDIT_ConfinePoint(hwnd, es, &x, &y);
3708 es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
3709 es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
3710 e = EDIT_CharFromPos(hwnd, es, x, y, &after_wrap);
3711 EDIT_EM_SetSel(hwnd, es, es->selection_start, e, after_wrap);
3712
3713 return 0;
3714}
3715
3716
3717/*********************************************************************
3718 *
3719 * WM_NCCREATE
3720 *
3721 */
3722static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTA cs)
3723{
3724 EDITSTATE *es;
3725
3726 if (!(es = (EDITSTATE*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
3727 return FALSE;
3728 SetInfoPtr(hwnd,(DWORD)es);
3729
3730 /*
3731 * Note: since the EDITSTATE has not been fully initialized yet,
3732 * we can't use any API calls that may send
3733 * WM_XXX messages before WM_NCCREATE is completed.
3734 */
3735
3736 if (!(es->heap = HeapCreate(0, 0x10000, 0)))
3737 return FALSE;
3738 es->style = cs->style;
3739
3740 es->bEnableState = !(cs->style & WS_DISABLED);
3741
3742 /*
3743 * In Win95 look and feel, the WS_BORDER style is replaced by the
3744 * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
3745 * control a non client area.
3746 */
3747 if (es->style & WS_BORDER)
3748 {
3749 es->style &= ~WS_BORDER;
3750 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) & ~WS_BORDER);
3751 SetWindowLongA(hwnd,GWL_EXSTYLE,GetWindowLongA(hwnd,GWL_EXSTYLE) | WS_EX_CLIENTEDGE);
3752 }
3753
3754 if (es->style & ES_COMBO)
3755 es->hwndListBox = GetDlgItem(cs->hwndParent, ID_CB_LISTBOX);
3756
3757 if (es->style & ES_MULTILINE) {
3758 es->buffer_size = BUFSTART_MULTI;
3759 es->buffer_limit = BUFLIMIT_MULTI;
3760 if (es->style & WS_VSCROLL)
3761 es->style |= ES_AUTOVSCROLL;
3762 if (es->style & WS_HSCROLL)
3763 es->style |= ES_AUTOHSCROLL;
3764 es->style &= ~ES_PASSWORD;
3765 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
3766 if (es->style & ES_RIGHT)
3767 es->style &= ~ES_CENTER;
3768 es->style &= ~WS_HSCROLL;
3769 es->style &= ~ES_AUTOHSCROLL;
3770 }
3771
3772 /* FIXME: for now, all multi line controls are AUTOVSCROLL */
3773 es->style |= ES_AUTOVSCROLL;
3774 } else {
3775 es->buffer_size = BUFSTART_SINGLE;
3776 es->buffer_limit = BUFLIMIT_SINGLE;
3777 es->style &= ~ES_CENTER;
3778 es->style &= ~ES_RIGHT;
3779 es->style &= ~WS_HSCROLL;
3780 es->style &= ~WS_VSCROLL;
3781 es->style &= ~ES_AUTOVSCROLL;
3782 es->style &= ~ES_WANTRETURN;
3783 if (es->style & ES_UPPERCASE) {
3784 es->style &= ~ES_LOWERCASE;
3785 es->style &= ~ES_NUMBER;
3786 } else if (es->style & ES_LOWERCASE)
3787 es->style &= ~ES_NUMBER;
3788 if (es->style & ES_PASSWORD)
3789 es->password_char = '*';
3790
3791 /* FIXME: for now, all single line controls are AUTOHSCROLL */
3792 es->style |= ES_AUTOHSCROLL;
3793 }
3794 if (!(es->text = (char*)HeapAlloc(es->heap, 0, es->buffer_size + 1)))
3795 return FALSE;
3796 es->buffer_size = HeapSize(es->heap, 0, es->text) - 1;
3797 if (!(es->undo_text = (char*)HeapAlloc(es->heap, 0, es->buffer_size + 1)))
3798 return FALSE;
3799 es->undo_buffer_size = HeapSize(es->heap, 0, es->undo_text) - 1;
3800 *es->text = '\0';
3801 if (es->style & ES_MULTILINE)
3802 if (!(es->first_line_def = (LINEDEF*)HeapAlloc(es->heap, HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
3803 return FALSE;
3804 es->line_count = 1;
3805
3806 return TRUE;
3807}
3808
3809static VOID EDIT_Draw(HWND hwnd,EDITSTATE *es,HDC hdc,BOOL eraseBkGnd)
3810{
3811 INT i;
3812 HFONT old_font = 0;
3813 RECT rc;
3814 RECT rcLine;
3815 RECT rcRgn;
3816 BOOL rev = es->bEnableState && ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL));
3817
3818 HideCaret(hwnd);
3819
3820 if (eraseBkGnd)
3821 {
3822 HBRUSH brush;
3823
3824 if (!es->bEnableState || (es->style & ES_READONLY))
3825 brush = (HBRUSH)EDIT_SEND_CTLCOLORSTATIC(hwnd, hdc);
3826 else
3827 brush = (HBRUSH)EDIT_SEND_CTLCOLOR(hwnd, hdc);
3828
3829 if (!brush)
3830 brush = (HBRUSH)GetStockObject(WHITE_BRUSH);
3831
3832 GetClientRect(hwnd, &rc);
3833 /*
3834 * FIXME: specs say that we should UnrealizeObject() the brush,
3835 * but the specs of UnrealizeObject() say that we shouldn't
3836 * unrealize a stock object. The default brush that
3837 * DefWndProc() returns is ... a stock object.
3838 */
3839 FillRect(hdc, &rc, brush);
3840 }
3841
3842 if(es->style & WS_BORDER)
3843 {
3844 GetClientRect(hwnd, &rc);
3845 if(es->style & ES_MULTILINE)
3846 {
3847 if(es->style & WS_HSCROLL) rc.bottom++;
3848 if(es->style & WS_VSCROLL) rc.right++;
3849 }
3850 Rectangle(hdc, rc.left, rc.top, rc.right, rc.bottom);
3851 }
3852
3853 IntersectClipRect(hdc, es->format_rect.left,
3854 es->format_rect.top,
3855 es->format_rect.right,
3856 es->format_rect.bottom);
3857 if (es->style & ES_MULTILINE)
3858 {
3859 GetClientRect(hwnd, &rc);
3860 IntersectClipRect(hdc, rc.left, rc.top, rc.right, rc.bottom);
3861 }
3862 if (es->font) old_font = SelectObject(hdc, es->font);
3863 if (!es->bEnableState || (es->style & ES_READONLY))
3864 EDIT_SEND_CTLCOLORSTATIC(hwnd, hdc);
3865 else
3866 EDIT_SEND_CTLCOLOR(hwnd, hdc);
3867 if (!es->bEnableState)
3868 SetTextColor(hdc, GetSysColor(COLOR_GRAYTEXT));
3869 GetClipBox(hdc, &rcRgn);
3870 if (es->style & ES_MULTILINE)
3871 {
3872 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
3873
3874 for (i = es->y_offset ; i <= MIN(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++)
3875 {
3876 EDIT_GetLineRect(hwnd,hdc, es, i, 0, -1, &rcLine);
3877 if (IntersectRect(&rc, &rcRgn, &rcLine))
3878 EDIT_PaintLine(hwnd, es, hdc, i, rev);
3879 }
3880 } else
3881 {
3882 EDIT_GetLineRect(hwnd,hdc, es, 0, 0, -1, &rcLine);
3883 if (IntersectRect(&rc, &rcRgn, &rcLine))
3884 EDIT_PaintLine(hwnd, es, hdc, 0, rev);
3885 }
3886 if (es->font) SelectObject(hdc, old_font);
3887 if (es->flags & EF_FOCUSED)
3888 EDIT_SetCaretPos(hwnd, es, es->selection_end,es->flags & EF_AFTER_WRAP);
3889
3890 ShowCaret(hwnd);
3891}
3892
3893static VOID EDIT_Refresh(HWND hwnd,EDITSTATE *es,BOOL useCache)
3894{
3895 HDC hdc,hdcCompatible;
3896 HBITMAP bitmap,oldbmp;
3897 RECT rect;
3898
3899 if (es->flags & EF_UPDATE)
3900 {
3901 //CB: don't reset flag or EN_CHANGE is lost!
3902 //es->flags &= ~EF_UPDATE;
3903 EDIT_NOTIFY_PARENT(hwnd,EN_UPDATE);
3904 }
3905
3906 if (!IsWindowVisible(hwnd)) return;
3907
3908 if (!useCache)
3909 {
3910 InvalidateRect(hwnd,NULL,TRUE);
3911 return;
3912 }
3913
3914 //CB: original control redraws many times, cache drawing
3915 HideCaret(hwnd);
3916 GetClientRect(hwnd,&rect);
3917 hdc = GetDC(hwnd);
3918 hdcCompatible = CreateCompatibleDC(hdc);
3919 bitmap = CreateCompatibleBitmap(hdc,rect.right,rect.bottom);
3920 oldbmp = SelectObject(hdcCompatible,bitmap);
3921 EDIT_Draw(hwnd,es,hdcCompatible,TRUE);
3922 SelectClipRgn(hdcCompatible,0);
3923 BitBlt(hdc,0,0,rect.right,rect.bottom,hdcCompatible,0,0,SRCCOPY);
3924 SelectObject(hdcCompatible,oldbmp);
3925 DeleteObject(bitmap);
3926 DeleteDC(hdcCompatible);
3927 ReleaseDC(hwnd,hdc);
3928 ShowCaret(hwnd);
3929}
3930
3931/*********************************************************************
3932 *
3933 * WM_PAINT
3934 *
3935 */
3936static void EDIT_WM_Paint(HWND hwnd, EDITSTATE *es,WPARAM wParam)
3937{
3938 PAINTSTRUCT ps;
3939 HDC hdc;
3940
3941 if (!wParam) hdc = BeginPaint(hwnd, &ps);
3942 else hdc = (HDC) wParam;
3943
3944 EDIT_Draw(hwnd,es,hdc,FALSE);
3945
3946 if (!wParam) EndPaint(hwnd, &ps);
3947}
3948
3949
3950/*********************************************************************
3951 *
3952 * WM_PASTE
3953 *
3954 */
3955static void EDIT_WM_Paste(HWND hwnd, EDITSTATE *es)
3956{
3957 HGLOBAL hsrc;
3958 LPSTR src;
3959
3960 OpenClipboard(hwnd);
3961 hsrc = GetClipboardData(CF_TEXT);
3962 if (hsrc) {
3963 src = (LPSTR)GlobalLock(hsrc);
3964 EDIT_EM_ReplaceSel(hwnd, es, TRUE, src);
3965 GlobalUnlock(hsrc);
3966
3967 if (es->flags & EF_UPDATE) {
3968 es->flags &= ~EF_UPDATE;
3969 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3970 }
3971 }
3972 CloseClipboard();
3973}
3974
3975
3976/*********************************************************************
3977 *
3978 * WM_SETFOCUS
3979 *
3980 */
3981static void EDIT_WM_SetFocus(HWND hwnd, EDITSTATE *es, HWND window_losing_focus)
3982{
3983 es->flags |= EF_FOCUSED;
3984 CreateCaret(hwnd, 0, 2, es->line_height);
3985 EDIT_SetCaretPos(hwnd, es, es->selection_end,
3986 es->flags & EF_AFTER_WRAP);
3987 if(!(es->style & ES_NOHIDESEL))
3988 EDIT_InvalidateText(hwnd, es, es->selection_start, es->selection_end);
3989 ShowCaret(hwnd);
3990 EDIT_NOTIFY_PARENT(hwnd, EN_SETFOCUS);
3991}
3992
3993/*********************************************************************
3994 *
3995 * WM_SETFONT
3996 *
3997 * With Win95 look the margins are set to default font value unless
3998 * the system font (font == 0) is being set, in which case they are left
3999 * unchanged.
4000 *
4001 */
4002static void EDIT_WM_SetFont(HWND hwnd, EDITSTATE *es, HFONT font, BOOL redraw)
4003{
4004 TEXTMETRICA tm;
4005 HDC dc;
4006 HFONT old_font = 0;
4007 RECT r;
4008
4009 dc = GetDC(hwnd);
4010 if (font)
4011 old_font = SelectObject(dc, font);
4012 if (!GetTextMetricsA(dc, &tm))
4013 {
4014 if (font) SelectObject(dc,old_font);
4015 ReleaseDC(hwnd,dc);
4016
4017 return;
4018 }
4019 es->font = font;
4020 es->line_height = tm.tmHeight;
4021
4022 es->char_width = tm.tmAveCharWidth;
4023 if (font)
4024 SelectObject(dc, old_font);
4025 ReleaseDC(hwnd, dc);
4026 if (font)
4027 EDIT_EM_SetMargins(hwnd, es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
4028 EC_USEFONTINFO, EC_USEFONTINFO);
4029 /* Force the recalculation of the format rect for each font change */
4030 GetClientRect(hwnd, &r);
4031 EDIT_SetRectNP(hwnd, es, &r);
4032 if (es->style & ES_MULTILINE)
4033 EDIT_BuildLineDefs_ML(hwnd,es);
4034
4035 if (redraw)
4036 EDIT_Refresh(hwnd,es,FALSE);
4037 if (es->flags & EF_FOCUSED) {
4038 DestroyCaret();
4039 CreateCaret(hwnd, 0, 2, es->line_height);
4040 EDIT_SetCaretPos(hwnd, es, es->selection_end,
4041 es->flags & EF_AFTER_WRAP);
4042 ShowCaret(hwnd);
4043 }
4044}
4045
4046
4047/*********************************************************************
4048 *
4049 * WM_SETTEXT
4050 *
4051 * NOTES
4052 * For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
4053 * The modified flag is reset. No notifications are sent.
4054 *
4055 * For single-line controls, reception of WM_SETTEXT triggers:
4056 * The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
4057 *
4058 */
4059static void EDIT_WM_SetText(HWND hwnd, EDITSTATE *es, LPCSTR text)
4060{
4061#ifdef __WIN32OS2__
4062 //SvL: Acrobat Distiller keeps on sending WM_SETTEXT with the same
4063 // string in responds to a WM_COMMAND with EN_UPDATE -> stack
4064 // overflow (TODO: Need to check if this behaviour is correct compared to NT)
4065 if(text && es->text) {
4066 if(!strcmp(es->text, text)) {
4067 return;
4068 }
4069 }
4070#endif
4071 es->selection_start = 0;
4072 es->selection_end = lstrlenA(es->text);
4073 if (es->flags & EF_FOCUSED)
4074 EDIT_SetCaretPos(hwnd, es, es->selection_end, FALSE);
4075
4076 if (text) {
4077 //TRACE_(edit)("\t'%s'\n", text);
4078 EDIT_EM_ReplaceSel(hwnd, es, FALSE, text);
4079 } else {
4080 //TRACE_(edit)("\t<NULL>\n");
4081 EDIT_EM_ReplaceSel(hwnd, es, FALSE, "");
4082 }
4083 es->x_offset = 0;
4084 if (es->style & ES_MULTILINE) {
4085 es->flags &= ~EF_UPDATE;
4086 } else {
4087 es->flags |= EF_UPDATE;
4088 }
4089 es->flags &= ~EF_MODIFIED;
4090 EDIT_EM_SetSel(hwnd, es, 0, 0, FALSE);
4091 EDIT_EM_ScrollCaret(hwnd, es);
4092 EDIT_UpdateScrollBars(hwnd,es,TRUE,TRUE);
4093 if (es->flags & EF_UPDATE)
4094 {
4095 EDIT_NOTIFY_PARENT(hwnd,EN_UPDATE);
4096 /* EN_CHANGE notification need to be sent too
4097 Windows doc says it's only done after the display,
4098 the doc is WRONG. EN_CHANGE notification is sent
4099 while processing WM_SETTEXT */
4100 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
4101 es->flags &= ~EF_UPDATE;
4102 }
4103}
4104
4105
4106/*********************************************************************
4107 *
4108 * WM_SIZE
4109 *
4110 */
4111static void EDIT_WM_Size(HWND hwnd, EDITSTATE *es, UINT action, INT width, INT height)
4112{
4113 if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
4114 RECT rc;
4115 SetRect(&rc, 0, 0, width, height);
4116 EDIT_SetRectNP(hwnd, es, &rc);
4117 EDIT_Refresh(hwnd,es,FALSE);
4118 }
4119}
4120
4121
4122/*********************************************************************
4123 *
4124 * WM_SYSKEYDOWN
4125 *
4126 */
4127static LRESULT EDIT_WM_SysKeyDown(HWND hwnd, EDITSTATE *es, INT key, DWORD key_data)
4128{
4129 if ((key == VK_BACK) && (key_data & 0x2000)) {
4130 if (EDIT_EM_CanUndo(hwnd, es))
4131 EDIT_EM_Undo(hwnd, es);
4132 return 0;
4133 } else if ((key == VK_UP) || (key == VK_DOWN))
4134 {
4135 if (EDIT_CheckCombo(hwnd,es, WM_SYSKEYDOWN, key, key_data))
4136 return 0;
4137 }
4138 return DefWindowProcA(hwnd, WM_SYSKEYDOWN, (WPARAM)key, (LPARAM)key_data);
4139}
4140
4141
4142/*********************************************************************
4143 *
4144 * WM_TIMER
4145 *
4146 */
4147static void EDIT_WM_Timer(HWND hwnd, EDITSTATE *es, INT id, TIMERPROC timer_proc)
4148{
4149 if (es->region_posx < 0) {
4150 EDIT_MoveBackward(hwnd, es, TRUE);
4151 } else if (es->region_posx > 0) {
4152 EDIT_MoveForward(hwnd, es, TRUE);
4153 }
4154
4155 if (!(es->style & ES_MULTILINE)) return;
4156
4157 if (es->region_posy < 0)
4158 {
4159 EDIT_MoveUp_ML(hwnd,es,TRUE);
4160 } else if (es->region_posy > 0)
4161 {
4162 EDIT_MoveDown_ML(hwnd,es,TRUE);
4163 }
4164}
4165
4166
4167/*********************************************************************
4168 *
4169 * EDIT_VScroll_Hack
4170 *
4171 * 16 bit notepad needs this. Actually it is not _our_ hack,
4172 * it is notepad's. Notepad is sending us scrollbar messages with
4173 * undocumented parameters without us even having a scrollbar ... !?!?
4174 *
4175 */
4176static LRESULT EDIT_VScroll_Hack(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar)
4177{
4178 INT dy = 0;
4179 LRESULT ret = 0;
4180
4181 if (!(es->flags & EF_VSCROLL_HACK)) {
4182 //ERR_(edit)("hacked WM_VSCROLL handler invoked\n");
4183 //ERR_(edit)(" if you are _not_ running 16 bit notepad, please report\n");
4184 //ERR_(edit)(" (this message is only displayed once per edit control)\n");
4185 es->flags |= EF_VSCROLL_HACK;
4186 }
4187
4188 switch (action) {
4189 case SB_LINEUP:
4190 case SB_LINEDOWN:
4191 case SB_PAGEUP:
4192 case SB_PAGEDOWN:
4193 EDIT_EM_Scroll(hwnd, es, action);
4194 return 0;
4195 case SB_TOP:
4196 dy = -es->y_offset;
4197 break;
4198 case SB_BOTTOM:
4199 dy = es->line_count - 1 - es->y_offset;
4200 break;
4201 case SB_THUMBTRACK:
4202 es->flags |= EF_VSCROLL_TRACK;
4203 dy = (pos * (es->line_count - 1) + 50) / 100 - es->y_offset;
4204 break;
4205 case SB_THUMBPOSITION:
4206 es->flags &= ~EF_VSCROLL_TRACK;
4207 if (!(dy = (pos * (es->line_count - 1) + 50) / 100 - es->y_offset))
4208 EDIT_NOTIFY_PARENT(hwnd, EN_VSCROLL);
4209 break;
4210 case SB_ENDSCROLL:
4211 break;
4212
4213 default:
4214 //ERR_(edit)("undocumented (hacked) WM_VSCROLL parameter, please report\n");
4215 return 0;
4216 }
4217 if (dy)
4218 EDIT_EM_LineScroll(hwnd, es, 0, dy);
4219 return ret;
4220}
4221
4222
4223/*********************************************************************
4224 *
4225 * WM_VSCROLL
4226 *
4227 */
4228static LRESULT EDIT_WM_VScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar)
4229{
4230 INT dy;
4231
4232 if (!(es->style & ES_MULTILINE))
4233 return 0;
4234
4235 if (!(es->style & ES_AUTOVSCROLL))
4236 return 0;
4237
4238 if (!(es->style & WS_VSCROLL))
4239 return EDIT_VScroll_Hack(hwnd, es, action, pos, scroll_bar);
4240
4241 dy = 0;
4242 switch (action) {
4243 case SB_LINEUP:
4244 case SB_LINEDOWN:
4245 case SB_PAGEUP:
4246 case SB_PAGEDOWN:
4247 EDIT_EM_Scroll(hwnd, es, action);
4248 return 0;
4249
4250 case SB_TOP:
4251 dy = -es->y_offset;
4252 break;
4253 case SB_BOTTOM:
4254 dy = es->line_count - 1 - es->y_offset;
4255 break;
4256 case SB_THUMBTRACK:
4257 es->flags |= EF_VSCROLL_TRACK;
4258 dy = pos - es->y_offset;
4259 break;
4260 case SB_THUMBPOSITION:
4261 es->flags &= ~EF_VSCROLL_TRACK;
4262 if (!(dy = pos - es->y_offset)) {
4263 SetScrollPos(hwnd, SB_VERT, pos, TRUE);
4264 EDIT_NOTIFY_PARENT(hwnd, EN_VSCROLL);
4265 }
4266 break;
4267 case SB_ENDSCROLL:
4268 break;
4269
4270 default:
4271 //ERR_(edit)("undocumented WM_VSCROLL action %d, please report\n",
4272 // action);
4273 return 0;
4274 }
4275 if (dy)
4276 EDIT_EM_LineScroll(hwnd, es, 0, dy);
4277 return 0;
4278}
4279
4280static LRESULT EDIT_WM_MouseWheel(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam)
4281{
4282 short gcWheelDelta = 0;
4283 UINT pulScrollLines = 3;
4284 SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
4285
4286 if (wParam & (MK_SHIFT | MK_CONTROL))
4287 return DefWindowProcA(hwnd,WM_MOUSEWHEEL, wParam, lParam);
4288 gcWheelDelta -= (short) HIWORD(wParam);
4289 if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4290 {
4291 int cLineScroll= (int) min((UINT) es->line_count, pulScrollLines);
4292
4293 cLineScroll *= (gcWheelDelta / WHEEL_DELTA);
4294 return EDIT_EM_LineScroll(hwnd, es, 0, cLineScroll);
4295 }
4296
4297 return 0;
4298}
4299
4300BOOL EDIT_Register()
4301{
4302 WNDCLASSA wndClass;
4303
4304//SvL: Don't check this now
4305// if (GlobalFindAtomA(EDITCLASSNAME)) return FALSE;
4306
4307 ZeroMemory(&wndClass,sizeof(WNDCLASSA));
4308 wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
4309 wndClass.lpfnWndProc = (WNDPROC)EditWndProc;
4310 wndClass.cbClsExtra = 0;
4311 wndClass.cbWndExtra = sizeof(VOID*);
4312 wndClass.hCursor = LoadCursorA(0,IDC_IBEAMA);
4313 wndClass.hbrBackground = (HBRUSH)0;
4314 wndClass.lpszClassName = EDITCLASSNAME;
4315
4316 return RegisterClassA(&wndClass);
4317}
4318
4319BOOL EDIT_Unregister()
4320{
4321 if (GlobalFindAtomA(EDITCLASSNAME))
4322 return UnregisterClassA(EDITCLASSNAME,(HINSTANCE)NULL);
4323 else return FALSE;
4324}
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