source: trunk/src/user32/edit.cpp@ 5013

Last change on this file since 5013 was 4800, checked in by sandervl, 25 years ago

edit + static control fixes
File size: 143.0 KB
Line 
1/* $Id: edit.cpp,v 1.42 2000-12-16 15:42:11 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 SelectClipRgn(dc,combRgn);
1708 EDIT_PaintText(hwnd,es,dc,x,y,line,0,ll,FALSE);
1709 CombineRgn(combRgn,oldRgn,newRgn,RGN_AND);
1710 SelectClipRgn(dc,combRgn);
1711 EDIT_PaintText(hwnd,es,dc,x,y,line,0,e-li,TRUE);
1712 SelectClipRgn(dc,oldRgn);
1713 DeleteObject(oldRgn);
1714 DeleteObject(newRgn);
1715 DeleteObject(combRgn);
1716 }
1717 } else EDIT_PaintText(hwnd, es, dc, x, y, line, 0, ll, FALSE);
1718}
1719
1720
1721/*********************************************************************
1722 *
1723 * EDIT_PaintText
1724 *
1725 */
1726static VOID EDIT_PaintText(HWND hwnd, EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
1727{
1728 COLORREF BkColor;
1729 COLORREF TextColor;
1730 INT li;
1731
1732 if (!count)
1733 return;
1734 BkColor = GetBkColor(dc);
1735 TextColor = GetTextColor(dc);
1736 if (rev)
1737 {
1738 SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
1739 SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
1740 }
1741 li = EDIT_EM_LineIndex(hwnd, es, line);
1742 if (es->style & ES_MULTILINE)
1743 {
1744 TabbedTextOutA(dc, x, y, es->text + li + col, count,
1745 es->tabs_count, es->tabs, es->format_rect.left - es->x_offset);
1746 } else
1747 {
1748 LPSTR text = EDIT_GetPasswordPointer_SL(hwnd, es);
1749 POINT pt;
1750
1751 TextOutA(dc,x,y,text+li+col,count);
1752 if (es->style & ES_PASSWORD)
1753 HeapFree(es->heap, 0, text);
1754 }
1755 if (rev)
1756 {
1757 SetBkColor(dc, BkColor);
1758 SetTextColor(dc, TextColor);
1759 }
1760}
1761
1762
1763/*********************************************************************
1764 *
1765 * EDIT_SetCaretPos
1766 *
1767 */
1768static void EDIT_SetCaretPos(HWND hwnd, EDITSTATE *es, INT pos,
1769 BOOL after_wrap)
1770{
1771 LRESULT res = EDIT_EM_PosFromChar(hwnd,0, es, pos, after_wrap);
1772 INT x = SLOWORD(res);
1773 INT y = SHIWORD(res);
1774
1775 if(x < es->format_rect.left)
1776 x = es->format_rect.left;
1777 if(x > es->format_rect.right - 2)
1778 x = es->format_rect.right - 2;
1779 if(y > es->format_rect.bottom)
1780 y = es->format_rect.bottom;
1781 if(y < es->format_rect.top)
1782 y = es->format_rect.top;
1783 SetCaretPos(x, y);
1784 return;
1785}
1786
1787
1788/*********************************************************************
1789 *
1790 * EDIT_SetRectNP
1791 *
1792 * note: this is not (exactly) the handler called on EM_SETRECTNP
1793 * it is also used to set the rect of a single line control
1794 *
1795 */
1796static void EDIT_SetRectNP(HWND hwnd, EDITSTATE *es, LPRECT rc)
1797{
1798 CopyRect(&es->format_rect, rc);
1799 if (es->style & WS_BORDER)
1800 {
1801 INT bw = GetSystemMetrics(SM_CXBORDER)+1,bh = GetSystemMetrics(SM_CYBORDER)+1;
1802
1803 es->format_rect.left += bw;
1804 es->format_rect.top += bh;
1805 es->format_rect.right -= bw;
1806 es->format_rect.bottom -= bh;
1807 }
1808 es->format_rect.left += es->left_margin;
1809 es->format_rect.right -= es->right_margin;
1810 es->format_rect.right = MAX(es->format_rect.right, es->format_rect.left + es->char_width);
1811 if (es->style & ES_MULTILINE)
1812 es->format_rect.bottom = es->format_rect.top +
1813 MAX(1, (es->format_rect.bottom - es->format_rect.top) / es->line_height) * es->line_height;
1814 else
1815 es->format_rect.bottom = es->format_rect.top + es->line_height;
1816 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
1817 EDIT_BuildLineDefs_ML(hwnd,es);
1818 EDIT_UpdateScrollBars(hwnd,es,TRUE,TRUE);
1819}
1820
1821
1822/*********************************************************************
1823 *
1824 * EDIT_UnlockBuffer
1825 *
1826 */
1827static void EDIT_UnlockBuffer(HWND hwnd, EDITSTATE *es, BOOL force)
1828{
1829 if (!es) {
1830 //ERR_(edit)("no EDITSTATE ... please report\n");
1831 return;
1832 }
1833 if (!(es->style & ES_MULTILINE))
1834 return;
1835 if (!es->lock_count) {
1836 //ERR_(edit)("lock_count == 0 ... please report\n");
1837 return;
1838 }
1839 if (!es->text) {
1840 //ERR_(edit)("es->text == 0 ... please report\n");
1841 return;
1842 }
1843 if (force || (es->lock_count == 1)) {
1844 if (es->hloc) {
1845 LocalUnlock(es->hloc);
1846 es->text = NULL;
1847 }
1848 }
1849 es->lock_count--;
1850}
1851
1852
1853/*********************************************************************
1854 *
1855 * EDIT_WordBreakProc
1856 *
1857 * Find the beginning of words.
1858 * Note: unlike the specs for a WordBreakProc, this function only
1859 * allows to be called without linebreaks between s[0] upto
1860 * s[count - 1]. Remember it is only called
1861 * internally, so we can decide this for ourselves.
1862 *
1863 */
1864static INT EDIT_WordBreakProc(LPSTR s, INT index, INT count, INT action)
1865{
1866 INT ret = 0;
1867
1868 //TRACE_(edit)("s=%p, index=%u, count=%u, action=%d\n",
1869 // s, index, count, action);
1870
1871 switch (action) {
1872 case WB_LEFT:
1873 if (!count)
1874 break;
1875 if (index)
1876 index--;
1877 if (s[index] == ' ') {
1878 while (index && (s[index] == ' '))
1879 index--;
1880 if (index) {
1881 while (index && (s[index] != ' '))
1882 index--;
1883 if (s[index] == ' ')
1884 index++;
1885 }
1886 } else {
1887 while (index && (s[index] != ' '))
1888 index--;
1889 if (s[index] == ' ')
1890 index++;
1891 }
1892 ret = index;
1893 break;
1894 case WB_RIGHT:
1895 if (!count)
1896 break;
1897 if (index)
1898 index--;
1899 if (s[index] == ' ')
1900 while ((index < count) && (s[index] == ' ')) index++;
1901 else {
1902 while (s[index] && (s[index] != ' ') && (index < count))
1903 index++;
1904 while ((s[index] == ' ') && (index < count)) index++;
1905 }
1906 ret = index;
1907 break;
1908 case WB_ISDELIMITER:
1909 ret = (s[index] == ' ');
1910 break;
1911 default:
1912 //ERR_(edit)("unknown action code, please report !\n");
1913 break;
1914 }
1915 return ret;
1916}
1917
1918
1919/*********************************************************************
1920 *
1921 * EM_CHARFROMPOS
1922 *
1923 * returns line number (not index) in high-order word of result.
1924 * NB : Q137805 is unclear about this. POINT * pointer in lParam apply
1925 * to Richedit, not to the edit control. Original documentation is valid.
1926 *
1927 */
1928static LRESULT EDIT_EM_CharFromPos(HWND hwnd, EDITSTATE *es, INT x, INT y)
1929{
1930 POINT pt;
1931 INT index;
1932
1933 pt.x = x;
1934 pt.y = y;
1935
1936 if (!PtInRect(&es->format_rect,pt)) return -1;
1937
1938 index = EDIT_CharFromPos(hwnd, es, x, y, NULL);
1939 return MAKELONG(index, EDIT_EM_LineFromChar(hwnd, es, index));
1940}
1941
1942
1943/*********************************************************************
1944 *
1945 * EM_FMTLINES
1946 *
1947 * Enable or disable soft breaks.
1948 */
1949static BOOL EDIT_EM_FmtLines(HWND hwnd, EDITSTATE *es, BOOL add_eol)
1950{
1951 es->flags &= ~EF_USE_SOFTBRK;
1952 if (add_eol) {
1953 es->flags |= EF_USE_SOFTBRK;
1954 dprintf(("EDIT: EM_FMTLINES: soft break enabled, not implemented\n"));
1955 }
1956 return add_eol;
1957}
1958
1959static INT EDIT_EM_GetFirstVisibleLine(HWND hwnd,EDITSTATE *es)
1960{
1961 return (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
1962}
1963
1964/*********************************************************************
1965 *
1966 * EM_GETHANDLE
1967 *
1968 * Hopefully this won't fire back at us.
1969 * We always start with a fixed buffer in our own heap.
1970 * However, with this message a 32 bit application requests
1971 * a handle to 32 bit moveable local heap memory, where it expects
1972 * to find the text.
1973 * It's a pity that from this moment on we have to use this
1974 * local heap, because applications may rely on the handle
1975 * in the future.
1976 *
1977 * In this function we'll try to switch to local heap.
1978 *
1979 */
1980static HLOCAL EDIT_EM_GetHandle(HWND hwnd, EDITSTATE *es)
1981{
1982 HLOCAL newBuf;
1983 LPSTR newText;
1984 INT newSize;
1985
1986 if (!(es->style & ES_MULTILINE))
1987 return 0;
1988
1989 if (es->hloc)
1990 return es->hloc;
1991
1992 if (!(newBuf = LocalAlloc(LMEM_MOVEABLE, lstrlenA(es->text) + 1))) {
1993 //ERR_(edit)("could not allocate new 32 bit buffer\n");
1994 return 0;
1995 }
1996#ifdef __WIN32OS2__
1997 newSize = LocalSize(newBuf) - 1;
1998#else
1999 newSize = MIN(LocalSize(newBuf) - 1, es->buffer_limit);
2000#endif
2001 if (!(newText = (char*)LocalLock(newBuf))) {
2002 //ERR_(edit)("could not lock new 32 bit buffer\n");
2003 LocalFree(newBuf);
2004 return 0;
2005 }
2006 lstrcpyA(newText, es->text);
2007 EDIT_UnlockBuffer(hwnd, es, TRUE);
2008 if (es->text)
2009 HeapFree(es->heap, 0, es->text);
2010 es->hloc = newBuf;
2011 es->buffer_size = newSize;
2012 es->text = newText;
2013 EDIT_LockBuffer(hwnd, es);
2014 //TRACE_(edit)("switched to 32 bit local heap\n");
2015
2016 return es->hloc;
2017}
2018
2019static INT EDIT_EM_GetLimitText(HWND hwnd,EDITSTATE *es)
2020{
2021 return es->buffer_limit;
2022}
2023
2024/*********************************************************************
2025 *
2026 * EM_GETLINE
2027 *
2028 */
2029static INT EDIT_EM_GetLine(HWND hwnd, EDITSTATE *es, INT line, LPSTR lpch)
2030{
2031 LPSTR src;
2032 INT len;
2033 INT i;
2034
2035 if (!lpch || (*(WORD*)lpch == 0)) return 0;
2036
2037 if (es->style & ES_MULTILINE) {
2038 if (line >= es->line_count)
2039 return 0;
2040 } else
2041 line = 0;
2042 i = EDIT_EM_LineIndex(hwnd, es, line);
2043 src = es->text + i;
2044 len = MIN(*(WORD *)lpch, EDIT_EM_LineLength(hwnd, es, i));
2045 for (i = 0 ; i < len ; i++) {
2046 *lpch = *src;
2047 src++;
2048 lpch++;
2049 }
2050 //SvL: Terminate string
2051 *lpch = 0;
2052 return (LRESULT)len;
2053}
2054
2055static INT EDIT_EM_GetLineCount(HWND hwnd,EDITSTATE *es)
2056{
2057 return (es->style & ES_MULTILINE) ? es->line_count : 1;
2058}
2059
2060static LONG EDIT_EM_GetMargins(HWND hwnd,EDITSTATE *es)
2061{
2062 return MAKELONG(es->left_margin, es->right_margin);
2063}
2064
2065static BOOL EDIT_EM_GetModify(HWND hwnd,EDITSTATE *es)
2066{
2067 return ((es->flags & EF_MODIFIED) != 0);
2068}
2069
2070static CHAR EDIT_EM_GetPasswordChar(HWND hwnd,EDITSTATE *es)
2071{
2072 return es->password_char;
2073}
2074
2075static VOID EDIT_EM_GetRect(HWND hwnd,EDITSTATE *es,LPRECT lprc)
2076{
2077 if (lprc) CopyRect(lprc,&es->format_rect);
2078}
2079
2080/*********************************************************************
2081 *
2082 * EM_GETSEL
2083 *
2084 */
2085static LRESULT EDIT_EM_GetSel(HWND hwnd, EDITSTATE *es, LPUINT start, LPUINT end)
2086{
2087 UINT s = es->selection_start;
2088 UINT e = es->selection_end;
2089
2090 ORDER_UINT(s, e);
2091
2092 if (start)
2093 *start = s;
2094 if (end)
2095 *end = e;
2096 return MAKELONG(s, e);
2097}
2098
2099/*********************************************************************
2100 *
2101 * EM_GETTHUMB
2102 */
2103static LRESULT EDIT_EM_GetThumb(HWND hwnd, EDITSTATE *es)
2104{
2105 SCROLLINFO si;
2106
2107 if (!(es->style & ES_MULTILINE)) return 0;
2108
2109 si.cbSize = sizeof(si);
2110 si.fMask = SIF_TRACKPOS;
2111 return GetScrollInfo(hwnd,SB_VERT,&si) ? si.nTrackPos:0;
2112}
2113
2114static PVOID EDIT_EM_GetWordbreakProc(HWND hwnd,EDITSTATE *es)
2115{
2116 return es->word_break_procA;
2117}
2118
2119/*********************************************************************
2120 *
2121 * EM_LINEFROMCHAR
2122 *
2123 */
2124static INT EDIT_EM_LineFromChar(HWND hwnd, EDITSTATE *es, INT index)
2125{
2126 INT line;
2127 LINEDEF *line_def;
2128
2129 if (!(es->style & ES_MULTILINE))
2130 return 0;
2131 if (index > lstrlenA(es->text))
2132 return es->line_count - 1;
2133 if (index == -1)
2134 index = MIN(es->selection_start, es->selection_end); //selection_end == caret pos
2135
2136 line = 0;
2137 line_def = es->first_line_def;
2138 index -= line_def->length;
2139 while ((index >= 0) && line_def->next) {
2140 line++;
2141 line_def = line_def->next;
2142 index -= line_def->length;
2143 }
2144 return line;
2145}
2146
2147
2148/*********************************************************************
2149 *
2150 * EM_LINEINDEX
2151 *
2152 */
2153static INT EDIT_EM_LineIndex(HWND hwnd, EDITSTATE *es, INT line)
2154{
2155 INT line_index;
2156 LINEDEF *line_def;
2157
2158 if (!(es->style & ES_MULTILINE))
2159 return 0;
2160 if (line >= es->line_count)
2161 return -1;
2162
2163 line_index = 0;
2164 line_def = es->first_line_def;
2165 if (line == -1) {
2166 INT index = es->selection_end - line_def->length;
2167 while ((index >= 0) && line_def->next) {
2168 line_index += line_def->length;
2169 line_def = line_def->next;
2170 index -= line_def->length;
2171 }
2172 } else {
2173 while (line > 0) {
2174 line_index += line_def->length;
2175 line_def = line_def->next;
2176 line--;
2177 }
2178 }
2179 return line_index;
2180}
2181
2182
2183/*********************************************************************
2184 *
2185 * EM_LINELENGTH
2186 *
2187 */
2188static INT EDIT_EM_LineLength(HWND hwnd, EDITSTATE *es, INT index)
2189{
2190 LINEDEF *line_def;
2191
2192 if (!(es->style & ES_MULTILINE))
2193 return lstrlenA(es->text);
2194
2195 if (index == -1)
2196 {
2197 INT sl = EDIT_EM_LineFromChar(hwnd,es,MIN(es->selection_start,es->selection_end));
2198 INT el = EDIT_EM_LineFromChar(hwnd,es,MAX(es->selection_start,es->selection_end));
2199
2200 if (sl == el)
2201 return EDIT_EM_LineLength(hwnd,es,sl)+es->selection_start-es->selection_end;
2202 else
2203 return es->selection_start+EDIT_EM_LineLength(hwnd,es,el)-es->selection_end;
2204 }
2205 line_def = es->first_line_def;
2206 index -= line_def->length;
2207 while ((index >= 0) && line_def->next) {
2208 line_def = line_def->next;
2209 index -= line_def->length;
2210 }
2211 return line_def->net_length;
2212}
2213
2214static VOID EDIT_UpdateScrollBars(HWND hwnd,EDITSTATE *es,BOOL updateHorz,BOOL updateVert)
2215{
2216 if (updateHorz && (es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
2217 {
2218 SCROLLINFO si;
2219 INT fw = es->format_rect.right - es->format_rect.left;
2220
2221 si.cbSize = sizeof(SCROLLINFO);
2222 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
2223 si.nMin = 0;
2224 si.nMax = es->text_width + fw - 1;
2225 si.nPage = fw;
2226 si.nPos = es->x_offset;
2227 SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
2228 }
2229
2230 if (updateVert && (es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
2231 {
2232 INT vlc = (es->format_rect.bottom-es->format_rect.top)/es->line_height;
2233 SCROLLINFO si;
2234
2235 si.cbSize = sizeof(SCROLLINFO);
2236 si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
2237 si.nMin = 0;
2238 si.nMax = es->line_count + vlc - 2;
2239 si.nPage = vlc;
2240 si.nPos = es->y_offset;
2241 SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
2242 }
2243}
2244
2245
2246/*********************************************************************
2247 *
2248 * EM_LINESCROLL
2249 *
2250 * FIXME: dx is in average character widths
2251 * However, we assume it is in pixels when we use this
2252 * function internally
2253 *
2254 */
2255static BOOL EDIT_EM_LineScroll(HWND hwnd, EDITSTATE *es, INT dx, INT dy)
2256{
2257 INT nyoff;
2258 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2259
2260 if (!(es->style & ES_MULTILINE))
2261 return FALSE;
2262
2263 if (-dx > es->x_offset)
2264 dx = -es->x_offset;
2265 if (dx > es->text_width - es->x_offset)
2266 dx = es->text_width - es->x_offset;
2267 nyoff = MAX(0, es->y_offset + dy);
2268
2269 //SvL: If nyoff > nr lines in control -> last line in control
2270 // window should show last line of control
2271 // Wine code shows last line at the top of the control
2272 // (Quake 3 startup edit control shows the problem)
2273 if (nyoff >= es->line_count) {
2274 if(es->line_count <= vlc) {
2275 nyoff = es->y_offset; //no need to scroll
2276 }
2277 else nyoff = es->line_count - vlc - 1;
2278 }
2279 dy = (es->y_offset - nyoff) * es->line_height;
2280 if (dx || dy)
2281 {
2282 RECT rc1;
2283 RECT rc;
2284
2285 if (dx && !(es->flags & EF_HSCROLL_TRACK))
2286 EDIT_NOTIFY_PARENT(hwnd, EN_HSCROLL);
2287 if (dy && !(es->flags & EF_VSCROLL_TRACK))
2288 EDIT_NOTIFY_PARENT(hwnd, EN_VSCROLL);
2289
2290 GetClientRect(hwnd, &rc1);
2291 IntersectRect(&rc, &rc1, &es->format_rect);
2292
2293 ScrollWindowEx(hwnd,-dx,dy,NULL,&rc,(HRGN)NULL,NULL,SW_INVALIDATE);
2294 es->y_offset = nyoff;
2295 es->x_offset += dx;
2296 EDIT_UpdateScrollBars(hwnd,es,dx,dy);
2297 }
2298
2299 return TRUE;
2300}
2301
2302
2303/*********************************************************************
2304 *
2305 * EM_POSFROMCHAR
2306 *
2307 */
2308static LRESULT EDIT_EM_PosFromChar(HWND hwnd,HDC dc, EDITSTATE *es, INT index, BOOL after_wrap)
2309{
2310 INT len = lstrlenA(es->text);
2311 INT l;
2312 INT li;
2313 INT x;
2314 INT y = 0;
2315 BOOL createdDC = FALSE;
2316 HFONT old_font = 0;
2317 SIZE size;
2318
2319 index = MIN(index, len);
2320 if (!dc)
2321 {
2322 dc = GetDC(hwnd);
2323 if (es->font)
2324 old_font = SelectObject(dc, es->font);
2325 createdDC = TRUE;
2326 }
2327 if (es->style & ES_MULTILINE) {
2328 l = EDIT_EM_LineFromChar(hwnd, es, index);
2329 y = (l - es->y_offset) * es->line_height;
2330 li = EDIT_EM_LineIndex(hwnd, es, l);
2331 if (after_wrap && (li == index) && l) {
2332 INT l2 = l - 1;
2333 LINEDEF *line_def = es->first_line_def;
2334 while (l2) {
2335 line_def = line_def->next;
2336 l2--;
2337 }
2338 if (line_def->ending == END_WRAP) {
2339 l--;
2340 y -= es->line_height;
2341 li = EDIT_EM_LineIndex(hwnd, es, l);
2342 }
2343 }
2344 x = LOWORD(GetTabbedTextExtentA(dc, es->text + li, index - li,
2345 es->tabs_count, es->tabs)) - es->x_offset;
2346 } else
2347 {
2348 LPSTR text = EDIT_GetPasswordPointer_SL(hwnd, es);
2349
2350 GetTextExtentPoint32A(dc,text,index,&size);
2351 x = size.cx;
2352 if (es->x_offset)
2353 {
2354 GetTextExtentPoint32A(dc,text,es->x_offset,&size);
2355 x -= size.cx;
2356 }
2357 y = 0;
2358 if (es->style & ES_PASSWORD)
2359 HeapFree(es->heap, 0 ,text);
2360 }
2361 x += es->format_rect.left;
2362 y += es->format_rect.top;
2363 if (createdDC)
2364 {
2365 if (es->font)
2366 SelectObject(dc, old_font);
2367 ReleaseDC(hwnd, dc);
2368 }
2369 return MAKELONG((INT16)x, (INT16)y);
2370}
2371
2372BOOL EDIT_CheckNumber(CHAR *text)
2373{
2374 if (!text) return TRUE;
2375
2376 while (text[0] != 0)
2377 {
2378 if ((BYTE)text[0] < '0' || (BYTE)text[0] > '9') return FALSE;
2379 text++;
2380 }
2381
2382 return TRUE;
2383}
2384
2385/*********************************************************************
2386 *
2387 * EM_REPLACESEL
2388 *
2389 */
2390static void EDIT_EM_ReplaceSel(HWND hwnd, EDITSTATE *es, BOOL can_undo, LPCSTR lpsz_replace)
2391{
2392 INT strl = lstrlenA(lpsz_replace);
2393 INT tl = lstrlenA(es->text);
2394 INT utl;
2395 UINT s;
2396 UINT e;
2397 INT i;
2398 LPSTR p;
2399
2400 s = es->selection_start;
2401 e = es->selection_end;
2402
2403 if ((s == e) && !strl)
2404 return;
2405
2406 ORDER_UINT(s, e);
2407
2408 if (!EDIT_MakeFit(hwnd, es, tl - (e - s) + strl))
2409 return;
2410
2411 if (e != s) {
2412 /* there is something to be deleted */
2413 if (can_undo) {
2414 utl = lstrlenA(es->undo_text);
2415 if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
2416 /* undo-buffer is extended to the right */
2417 EDIT_MakeUndoFit(hwnd, es, utl + e - s);
2418 lstrcpynA(es->undo_text + utl, es->text + s, e - s + 1);
2419 } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
2420 /* undo-buffer is extended to the left */
2421 EDIT_MakeUndoFit(hwnd, es, utl + e - s);
2422 for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
2423 p[e - s] = p[0];
2424 for (i = 0 , p = es->undo_text ; i < e - s ; i++)
2425 p[i] = (es->text + s)[i];
2426 es->undo_position = s;
2427 } else {
2428 /* new undo-buffer */
2429 EDIT_MakeUndoFit(hwnd, es, e - s);
2430 lstrcpynA(es->undo_text, es->text + s, e - s + 1);
2431 es->undo_position = s;
2432 }
2433 /* any deletion makes the old insertion-undo invalid */
2434 es->undo_insert_count = 0;
2435 } else
2436 EDIT_EM_EmptyUndoBuffer(hwnd, es);
2437
2438 /* now delete */
2439 lstrcpyA(es->text + s, es->text + e);
2440 }
2441 if (strl)
2442 {
2443 if ((es->style & ES_NUMBER) && !EDIT_CheckNumber((CHAR*)lpsz_replace))
2444 MessageBeep(MB_ICONEXCLAMATION);
2445 else
2446 {
2447 /* there is an insertion */
2448 if (can_undo) {
2449 if ((s == es->undo_position) ||
2450 ((es->undo_insert_count) &&
2451 (s == es->undo_position + es->undo_insert_count)))
2452 /*
2453 * insertion is new and at delete position or
2454 * an extension to either left or right
2455 */
2456 es->undo_insert_count += strl;
2457 else {
2458 /* new insertion undo */
2459 es->undo_position = s;
2460 es->undo_insert_count = strl;
2461 /* new insertion makes old delete-buffer invalid */
2462 *es->undo_text = '\0';
2463 }
2464 } else
2465 EDIT_EM_EmptyUndoBuffer(hwnd, es);
2466
2467
2468 /* now insert */
2469 tl = lstrlenA(es->text);
2470 for (p = es->text + tl ; p >= es->text + s ; p--)
2471 p[strl] = p[0];
2472 for (i = 0 , p = es->text + s ; i < strl ; i++)
2473 p[i] = lpsz_replace[i];
2474
2475 if (es->style & ES_OEMCONVERT)
2476 {
2477 CHAR *text = (LPSTR)HeapAlloc(es->heap,0,strl);
2478
2479 CharToOemBuffA(lpsz_replace,text,strl);
2480 OemToCharBuffA(text,p,strl);
2481 HeapFree(es->heap,0,text);
2482 }
2483
2484 if(es->style & ES_UPPERCASE)
2485 CharUpperBuffA(p, strl);
2486 else if(es->style & ES_LOWERCASE)
2487 CharLowerBuffA(p, strl);
2488
2489 s += strl;
2490 }
2491 }
2492 /* FIXME: really inefficient */
2493 if (es->style & ES_MULTILINE)
2494 EDIT_BuildLineDefs_ML(hwnd,es);
2495
2496 EDIT_EM_SetSel(hwnd, es, s, s, FALSE);
2497
2498 es->flags |= EF_MODIFIED;
2499 es->flags |= EF_UPDATE;
2500 EDIT_EM_ScrollCaret(hwnd, es);
2501
2502 /* FIXME: really inefficient */
2503 EDIT_Refresh(hwnd,es,TRUE);
2504}
2505
2506
2507/*********************************************************************
2508 *
2509 * EM_SCROLL
2510 *
2511 */
2512static LRESULT EDIT_EM_Scroll(HWND hwnd, EDITSTATE *es, INT action)
2513{
2514 INT dy;
2515
2516 if (!(es->style & ES_MULTILINE))
2517 return (LRESULT)FALSE;
2518
2519 dy = 0;
2520
2521 switch (action) {
2522 case SB_LINEUP:
2523 if (es->y_offset)
2524 dy = -1;
2525 break;
2526 case SB_LINEDOWN:
2527 if (es->y_offset < es->line_count - 1)
2528 dy = 1;
2529 break;
2530 case SB_PAGEUP:
2531 if (es->y_offset)
2532 dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
2533 break;
2534 case SB_PAGEDOWN:
2535 if (es->y_offset < es->line_count - 1)
2536 dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2537 break;
2538 default:
2539 return (LRESULT)FALSE;
2540 }
2541 if (dy) {
2542 EDIT_NOTIFY_PARENT(hwnd, EN_VSCROLL);
2543 EDIT_EM_LineScroll(hwnd, es, 0, dy);
2544 }
2545 return MAKELONG((INT16)dy, (BOOL16)TRUE);
2546}
2547
2548
2549/*********************************************************************
2550 *
2551 * EM_SCROLLCARET
2552 *
2553 */
2554static void EDIT_EM_ScrollCaret(HWND hwnd, EDITSTATE *es)
2555{
2556 if (es->style & ES_MULTILINE) {
2557 INT l;
2558 INT li;
2559 INT vlc;
2560 INT ww;
2561 INT cw = es->char_width;
2562 INT x;
2563 INT dy = 0;
2564 INT dx = 0;
2565
2566 l = EDIT_EM_LineFromChar(hwnd, es, es->selection_end);
2567 li = EDIT_EM_LineIndex(hwnd, es, l);
2568 x = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, es->flags & EF_AFTER_WRAP));
2569 vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
2570 if (l >= es->y_offset + vlc)
2571 dy = l - vlc + 1 - es->y_offset;
2572 if (l < es->y_offset)
2573 dy = l - es->y_offset;
2574 ww = es->format_rect.right - es->format_rect.left;
2575 if (x < es->format_rect.left)
2576 dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
2577 if (x > es->format_rect.right)
2578 dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
2579 if (dy || dx)
2580 EDIT_EM_LineScroll(hwnd, es, dx, dy);
2581 } else {
2582 INT x;
2583 INT goal;
2584 INT format_width;
2585
2586 if (!(es->style & ES_AUTOHSCROLL))
2587 return;
2588
2589 x = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, FALSE));
2590 format_width = es->format_rect.right - es->format_rect.left;
2591 if (x < es->format_rect.left)
2592 {
2593 goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
2594 do {
2595 es->x_offset--;
2596 x = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, FALSE));
2597 } while ((x < goal) && es->x_offset);
2598 /* FIXME: use ScrollWindow() somehow to improve performance */
2599 EDIT_Refresh(hwnd,es,TRUE);
2600 EDIT_UpdateScrollBars(hwnd,es,TRUE,FALSE);
2601 } else if (x > es->format_rect.right)
2602 {
2603 INT x_last;
2604 INT len = lstrlenA(es->text);
2605 goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
2606 do {
2607 es->x_offset++;
2608 x = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, es->selection_end, FALSE));
2609 x_last = SLOWORD(EDIT_EM_PosFromChar(hwnd,0, es, len, FALSE));
2610 } while ((x > goal) && (x_last > es->format_rect.right));
2611 /* FIXME: use ScrollWindow() somehow to improve performance */
2612 EDIT_Refresh(hwnd,es,TRUE);
2613 EDIT_UpdateScrollBars(hwnd,es,TRUE,FALSE);
2614 }
2615 }
2616}
2617
2618
2619/*********************************************************************
2620 *
2621 * EM_SETHANDLE
2622 *
2623 */
2624static void EDIT_EM_SetHandle(HWND hwnd, EDITSTATE *es, HLOCAL hloc)
2625{
2626 if (!(es->style & ES_MULTILINE))
2627 return;
2628
2629 if (!hloc) {
2630 //WARN_(edit)("called with NULL handle\n");
2631 return;
2632 }
2633
2634 EDIT_UnlockBuffer(hwnd, es, TRUE);
2635 /*
2636 * old buffer is freed by caller, unless
2637 * it is still in our own heap. (in that case
2638 * we free it, correcting the buggy caller.)
2639 */
2640 if (es->text)
2641 HeapFree(es->heap, 0, es->text);
2642
2643 es->hloc = hloc;
2644 es->text = NULL;
2645 es->buffer_size = LocalSize(es->hloc) - 1;
2646 EDIT_LockBuffer(hwnd, es);
2647
2648 if (es->text && (es->text[0] != 0))
2649 {
2650 if (es->style & ES_NUMBER)
2651 {
2652 //CB: todo
2653 }
2654
2655 if (es->style & ES_OEMCONVERT)
2656 {
2657 INT len = lstrlenA(es->text);
2658 CHAR *text = (LPSTR)HeapAlloc(es->heap,0,len);
2659
2660 CharToOemBuffA(es->text,text,len);
2661 OemToCharBuffA(text,es->text,len);
2662 HeapFree(es->heap,0,text);
2663 }
2664
2665 if(es->style & ES_UPPERCASE)
2666 CharUpperA(es->text);
2667 else if(es->style & ES_LOWERCASE)
2668 CharLowerA(es->text);
2669 }
2670
2671 es->x_offset = es->y_offset = 0;
2672 es->selection_start = es->selection_end = 0;
2673 EDIT_EM_EmptyUndoBuffer(hwnd, es);
2674 es->flags &= ~EF_MODIFIED;
2675 es->flags &= ~EF_UPDATE;
2676 EDIT_BuildLineDefs_ML(hwnd,es);
2677 EDIT_Refresh(hwnd,es,FALSE);
2678 EDIT_EM_ScrollCaret(hwnd, es);
2679 EDIT_UpdateScrollBars(hwnd,es,TRUE,TRUE);
2680}
2681
2682/*********************************************************************
2683 *
2684 * EM_SETLIMITTEXT
2685 *
2686 * FIXME: in WinNT maxsize is 0x7FFFFFFF / 0xFFFFFFFF
2687 * However, the windows version is not complied to yet in all of edit.c
2688 *
2689 */
2690static void EDIT_EM_SetLimitText(HWND hwnd, EDITSTATE *es, INT limit)
2691{
2692 if (es->style & ES_MULTILINE) {
2693 if (limit)
2694#ifdef __WIN32OS2__
2695 es->buffer_limit = limit;
2696#else
2697 es->buffer_limit = MIN(limit, BUFLIMIT_MULTI);
2698#endif
2699 else
2700 es->buffer_limit = BUFLIMIT_MULTI;
2701 } else {
2702 if (limit)
2703#ifdef __WIN32OS2__
2704 es->buffer_limit = MIN(limit, BUFLIMIT_SINGLE_NT);
2705#else
2706 es->buffer_limit = MIN(limit, BUFLIMIT_SINGLE);
2707#endif
2708 else
2709 es->buffer_limit = BUFLIMIT_SINGLE;
2710 }
2711}
2712
2713
2714/*********************************************************************
2715 *
2716 * EM_SETMARGINS
2717 *
2718 * EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
2719 * action wParam despite what the docs say. EC_USEFONTINFO means one third
2720 * of the char's width, according to the new docs.
2721 *
2722 */
2723static void EDIT_EM_SetMargins(HWND hwnd, EDITSTATE *es, INT action,
2724 INT left, INT right)
2725{
2726 RECT r;
2727 INT oldLeft = es->left_margin,oldRight = es->right_margin;
2728
2729 if (action & EC_LEFTMARGIN) {
2730 if (left != EC_USEFONTINFO)
2731 es->left_margin = left;
2732 else
2733 es->left_margin = es->char_width / 3;
2734 }
2735
2736 if (action & EC_RIGHTMARGIN) {
2737 if (right != EC_USEFONTINFO)
2738 es->right_margin = right;
2739 else
2740 es->right_margin = es->char_width / 3;
2741 }
2742 //TRACE_(edit)("left=%d, right=%d\n", es->left_margin, es->right_margin);
2743
2744 if ((oldLeft != es->left_margin) || (oldRight != es->right_margin))
2745 {
2746 GetClientRect(hwnd, &r);
2747 EDIT_SetRectNP(hwnd, es, &r);
2748 if (es->style & ES_MULTILINE)
2749 EDIT_BuildLineDefs_ML(hwnd,es);
2750
2751 EDIT_Refresh(hwnd,es,FALSE);
2752 if (es->flags & EF_FOCUSED) {
2753 DestroyCaret();
2754 CreateCaret(hwnd, 0, 2, es->line_height);
2755 EDIT_SetCaretPos(hwnd, es, es->selection_end,
2756 es->flags & EF_AFTER_WRAP);
2757 ShowCaret(hwnd);
2758 }
2759 }
2760}
2761
2762static void EDIT_EM_SetModify(HWND hwnd,EDITSTATE *es,BOOL fModified)
2763{
2764 if (fModified)
2765 es->flags |= EF_MODIFIED;
2766 else
2767 es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
2768}
2769
2770/*********************************************************************
2771 *
2772 * EM_SETPASSWORDCHAR
2773 *
2774 */
2775static void EDIT_EM_SetPasswordChar(HWND hwnd, EDITSTATE *es, CHAR c)
2776{
2777 if (es->style & ES_MULTILINE)
2778 return;
2779
2780 if (es->password_char == c)
2781 return;
2782
2783 es->password_char = c;
2784 if (c) {
2785 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) | ES_PASSWORD);
2786 es->style |= ES_PASSWORD;
2787 } else {
2788 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) & ~ES_PASSWORD);
2789 es->style &= ~ES_PASSWORD;
2790 }
2791 EDIT_Refresh(hwnd,es,FALSE);
2792}
2793
2794static BOOL EDIT_EM_SetReadOnly(HWND hwnd,EDITSTATE *es,BOOL fReadOnly)
2795{
2796 if (fReadOnly)
2797 {
2798 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) | ES_READONLY);
2799 es->style |= ES_READONLY;
2800 } else
2801 {
2802 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) & ~ES_READONLY);
2803 es->style &= ~ES_READONLY;
2804 }
2805
2806 return TRUE;
2807}
2808
2809static void EDIT_EM_SetRect(HWND hwnd,EDITSTATE *es,LPRECT lprc)
2810{
2811 if ((es->style & ES_MULTILINE) && lprc)
2812 {
2813 EDIT_SetRectNP(hwnd,es,lprc);
2814 EDIT_Refresh(hwnd,es,FALSE);
2815 }
2816}
2817
2818static void EDIT_EM_SetRectNP(HWND hwnd,EDITSTATE *es,LPRECT lprc)
2819{
2820 if ((es->style & ES_MULTILINE) && lprc)
2821 EDIT_SetRectNP(hwnd,es,lprc);
2822}
2823
2824/*********************************************************************
2825 *
2826 * EDIT_EM_SetSel
2827 *
2828 * note: unlike the specs say: the order of start and end
2829 * _is_ preserved in Windows. (i.e. start can be > end)
2830 * In other words: this handler is OK
2831 *
2832 */
2833static void EDIT_EM_SetSel(HWND hwnd, EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
2834{
2835 UINT old_start = es->selection_start;
2836 UINT old_end = es->selection_end;
2837 UINT len = lstrlenA(es->text);
2838
2839 if (start == -1) {
2840 start = es->selection_end;
2841 end = es->selection_end;
2842 } else {
2843 start = MIN(start, len);
2844 end = MIN(end, len);
2845 }
2846 es->selection_start = start;
2847 es->selection_end = end;
2848 if (after_wrap)
2849 es->flags |= EF_AFTER_WRAP;
2850 else
2851 es->flags &= ~EF_AFTER_WRAP;
2852 if (es->flags & EF_FOCUSED)
2853 EDIT_SetCaretPos(hwnd, es, end, after_wrap);
2854/* This is little bit more efficient than before, not sure if it can be improved. FIXME? */
2855 ORDER_UINT(start, end);
2856 ORDER_UINT(end, old_end);
2857 ORDER_UINT(start, old_start);
2858 ORDER_UINT(old_start, old_end);
2859 if ((start == old_start) && (end == old_end)) return;
2860 if (end != old_start)
2861 {
2862/*
2863 * One can also do
2864 * ORDER_UINT32(end, old_start);
2865 * EDIT_InvalidateText(wnd, es, start, end);
2866 * EDIT_InvalidateText(wnd, es, old_start, old_end);
2867 * in place of the following if statement.
2868 */
2869 if (old_start > end )
2870 {
2871 EDIT_InvalidateText(hwnd, es, start, end);
2872 EDIT_InvalidateText(hwnd, es, old_start, old_end);
2873 }
2874 else
2875 {
2876 EDIT_InvalidateText(hwnd, es, start, old_start);
2877 EDIT_InvalidateText(hwnd, es, end, old_end);
2878 }
2879 }
2880 else EDIT_InvalidateText(hwnd, es, start, old_end);
2881}
2882
2883
2884/*********************************************************************
2885 *
2886 * EM_SETTABSTOPS
2887 *
2888 */
2889static BOOL EDIT_EM_SetTabStops(HWND hwnd, EDITSTATE *es, INT count, LPINT tabs)
2890{
2891 if (!(es->style & ES_MULTILINE))
2892 return FALSE;
2893 if (es->tabs)
2894 HeapFree(es->heap, 0, es->tabs);
2895 es->tabs_count = count;
2896 if (!count)
2897 es->tabs = NULL;
2898 else {
2899 es->tabs = (INT*)HeapAlloc(es->heap, 0, count * sizeof(INT));
2900 memcpy(es->tabs, tabs, count * sizeof(INT));
2901 }
2902 return TRUE;
2903}
2904
2905
2906/*********************************************************************
2907 *
2908 * EM_SETWORDBREAKPROC
2909 *
2910 */
2911static void EDIT_EM_SetWordBreakProc(HWND hwnd, EDITSTATE *es, EDITWORDBREAKPROCA wbp)
2912{
2913 if (es->word_break_procA == wbp)
2914 return;
2915
2916 es->word_break_procA = wbp;
2917 if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
2918 EDIT_BuildLineDefs_ML(hwnd,es);
2919 EDIT_Refresh(hwnd,es,FALSE);
2920 }
2921}
2922
2923
2924/*********************************************************************
2925 *
2926 * EM_UNDO / WM_UNDO
2927 *
2928 */
2929static BOOL EDIT_EM_Undo(HWND hwnd, EDITSTATE *es)
2930{
2931 INT ulength = lstrlenA(es->undo_text);
2932 LPSTR utext = (LPSTR)HeapAlloc(es->heap, 0, ulength + 1);
2933
2934 lstrcpyA(utext, es->undo_text);
2935
2936 //TRACE_(edit)("before UNDO:insertion length = %d, deletion buffer = %s\n",
2937 // es->undo_insert_count, utext);
2938
2939 EDIT_EM_SetSel(hwnd, es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
2940 EDIT_EM_EmptyUndoBuffer(hwnd, es);
2941 EDIT_EM_ReplaceSel(hwnd, es, TRUE, utext);
2942 EDIT_EM_SetSel(hwnd, es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
2943 HeapFree(es->heap, 0, utext);
2944
2945 //TRACE_(edit)("after UNDO:insertion length = %d, deletion buffer = %s\n",
2946 // es->undo_insert_count, es->undo_text);
2947
2948 if (es->flags & EF_UPDATE) {
2949 es->flags &= ~EF_UPDATE;
2950 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
2951 }
2952
2953 return TRUE;
2954}
2955
2956static LRESULT EDIT_EM_SetIMEStatus(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam)
2957{
2958 if (wParam == EMSIS_COMPOSITIONSTRING)
2959 {
2960 //CB: todo
2961 }
2962
2963 return 0;
2964}
2965
2966static LRESULT EDIT_EM_GetIMEStatus(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam)
2967{
2968 //CB: todo
2969
2970 return 0; //default
2971}
2972
2973/*********************************************************************
2974 *
2975 * WM_CHAR
2976 *
2977 */
2978static void EDIT_WM_Char(HWND hwnd, EDITSTATE *es, CHAR c, DWORD key_data)
2979{
2980 BOOL control = GetKeyState(VK_CONTROL) & 0x8000;
2981 switch (c) {
2982 case '\r':
2983 /* If the edit doesn't want the return and it's not a multiline edit, do nothing */
2984 if(!(es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
2985 {
2986 MessageBeep(MB_ICONEXCLAMATION);
2987 break;
2988 }
2989 case '\n':
2990 if (es->style & ES_MULTILINE) {
2991 if (es->style & ES_READONLY) {
2992 EDIT_MoveHome(hwnd, es, FALSE);
2993 EDIT_MoveDown_ML(hwnd, es, FALSE);
2994 } else
2995 {
2996 EDIT_EM_ReplaceSel(hwnd, es, TRUE, "\r\n");
2997 if (es->flags & EF_UPDATE) {
2998 es->flags &= ~EF_UPDATE;
2999 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3000 }
3001 }
3002 }
3003 break;
3004 case '\t':
3005 if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
3006 {
3007 EDIT_EM_ReplaceSel(hwnd, es, TRUE, "\t");
3008 if (es->flags & EF_UPDATE) {
3009 es->flags &= ~EF_UPDATE;
3010 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3011 }
3012 }
3013 break;
3014 case VK_BACK:
3015 if (!(es->style & ES_READONLY) && !control) {
3016 if (es->selection_start != es->selection_end)
3017 EDIT_WM_Clear(hwnd, es);
3018 else {
3019 /* delete character left of caret */
3020 EDIT_EM_SetSel(hwnd, es, -1, 0, FALSE);
3021 EDIT_MoveBackward(hwnd, es, TRUE);
3022 EDIT_WM_Clear(hwnd, es);
3023 }
3024 }
3025 break;
3026//CB: are these three keys documented or Linux style???
3027 case 0x03: /* ^C */
3028 SendMessageA(hwnd, WM_COPY, 0, 0);
3029 break;
3030 case 0x16: /* ^V */
3031 SendMessageA(hwnd, WM_PASTE, 0, 0);
3032 break;
3033 case 0x18: /* ^X */
3034 SendMessageA(hwnd, WM_CUT, 0, 0);
3035 break;
3036
3037 default:
3038 if (!(es->style & ES_READONLY) && ((BYTE)c >= ' ') && (c != 127))
3039 {
3040 char str[2];
3041
3042 if (es->style & ES_NUMBER)
3043 {
3044 if (((BYTE)c < '0') || ((BYTE)c > '9')) {
3045 MessageBeep(MB_ICONEXCLAMATION);
3046 return;
3047 }
3048 }
3049 str[0] = c;
3050 str[1] = '\0';
3051 EDIT_EM_ReplaceSel(hwnd, es, TRUE, str);
3052 if (es->flags & EF_UPDATE)
3053 {
3054 es->flags &= ~EF_UPDATE;
3055 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3056 }
3057 } else MessageBeep(MB_ICONEXCLAMATION);
3058 break;
3059 }
3060}
3061
3062
3063/*********************************************************************
3064 *
3065 * WM_COMMAND
3066 *
3067 */
3068static void EDIT_WM_Command(HWND hwnd, EDITSTATE *es, INT code, INT id, HWND control)
3069{
3070 if (code || control)
3071 return;
3072
3073 switch (id) {
3074 case EM_UNDO:
3075 EDIT_EM_Undo(hwnd, es);
3076 break;
3077 case WM_CUT:
3078 EDIT_WM_Cut(hwnd, es);
3079 break;
3080 case WM_COPY:
3081 EDIT_WM_Copy(hwnd, es);
3082 break;
3083 case WM_PASTE:
3084 EDIT_WM_Paste(hwnd, es);
3085 break;
3086 case WM_CLEAR:
3087 EDIT_WM_Clear(hwnd, es);
3088 break;
3089 case EM_SETSEL:
3090 EDIT_EM_SetSel(hwnd, es, 0, -1, FALSE);
3091 EDIT_EM_ScrollCaret(hwnd, es);
3092 break;
3093 default:
3094 //ERR_(edit)("unknown menu item, please report\n");
3095 break;
3096 }
3097}
3098
3099
3100/*********************************************************************
3101 *
3102 * WM_CONTEXTMENU
3103 *
3104 * Note: the resource files resource/sysres_??.rc cannot define a
3105 * single popup menu. Hence we use a (dummy) menubar
3106 * containing the single popup menu as its first item.
3107 *
3108 * FIXME: the message identifiers have been chosen arbitrarily,
3109 * hence we use MF_BYPOSITION.
3110 * We might as well use the "real" values (anybody knows ?)
3111 * The menu definition is in resources/sysres_??.rc.
3112 * Once these are OK, we better use MF_BYCOMMAND here
3113 * (as we do in EDIT_WM_Command()).
3114 *
3115 */
3116static void EDIT_WM_ContextMenu(HWND hwnd, EDITSTATE *es, HWND hwndBtn, INT x, INT y)
3117{
3118 HMENU menu = LoadMenuA(GetModuleHandleA("USER32"), "EDITMENU");
3119 HMENU popup = GetSubMenu(menu, 0);
3120 UINT start = es->selection_start;
3121 UINT end = es->selection_end;
3122
3123 ORDER_UINT(start, end);
3124
3125 /* undo */
3126 EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(hwnd, es) ? MF_ENABLED : MF_GRAYED));
3127 /* cut */
3128 EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & (ES_PASSWORD | ES_READONLY)) ? MF_ENABLED : MF_GRAYED));
3129 /* copy */
3130 EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
3131 /* paste */
3132 EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_TEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3133 /* delete */
3134 EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
3135 /* select all */
3136 EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != lstrlenA(es->text)) ? MF_ENABLED : MF_GRAYED));
3137
3138 TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, hwnd, NULL);
3139 DestroyMenu(menu);
3140}
3141
3142
3143/*********************************************************************
3144 *
3145 * WM_COPY
3146 *
3147 */
3148static void EDIT_WM_Copy(HWND hwnd, EDITSTATE *es)
3149{
3150 INT s = es->selection_start;
3151 INT e = es->selection_end;
3152 HGLOBAL hdst;
3153 LPSTR dst;
3154
3155 if (e == s)
3156 return;
3157 ORDER_INT(s, e);
3158 hdst = GlobalAlloc(GMEM_MOVEABLE, (DWORD)(e - s + 1));
3159 dst = (LPSTR)GlobalLock(hdst);
3160 lstrcpynA(dst, es->text + s, e - s + 1);
3161 GlobalUnlock(hdst);
3162 OpenClipboard(hwnd);
3163 EmptyClipboard();
3164 SetClipboardData(CF_TEXT, hdst);
3165 CloseClipboard();
3166}
3167
3168
3169/*********************************************************************
3170 *
3171 * WM_CREATE
3172 *
3173 */
3174static LRESULT EDIT_WM_Create(HWND hwnd, EDITSTATE *es, LPCREATESTRUCTA cs)
3175{
3176 /*
3177 * To initialize some final structure members, we call some helper
3178 * functions. However, since the EDITSTATE is not consistent (i.e.
3179 * not fully initialized), we should be very careful which
3180 * functions can be called, and in what order.
3181 */
3182 EDIT_WM_SetFont(hwnd, es, 0, FALSE);
3183 EDIT_EM_EmptyUndoBuffer(hwnd, es);
3184 if (cs->lpszName && *(cs->lpszName) != '\0') {
3185 EDIT_EM_ReplaceSel(hwnd, es, FALSE, cs->lpszName);
3186 /* if we insert text to the editline, the text scrolls out
3187 * of the window, as the caret is placed after the insert
3188 * pos normally; thus we reset es->selection... to 0 and
3189 * update caret
3190 */
3191 es->selection_start = es->selection_end = 0;
3192 EDIT_EM_ScrollCaret(hwnd, es);
3193 if (es->flags & EF_UPDATE) {
3194 es->flags &= ~EF_UPDATE;
3195 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3196 }
3197 }
3198 return 0;
3199}
3200
3201
3202/*********************************************************************
3203 *
3204 * WM_DESTROY
3205 *
3206 */
3207static void EDIT_WM_Destroy(HWND hwnd, EDITSTATE *es)
3208{
3209 if (!es) /* Protect against multiple destroy messages */
3210 return;
3211
3212 if (es->hloc) {
3213 while (LocalUnlock(es->hloc)) ;
3214 LocalFree(es->hloc);
3215 }
3216
3217 HeapDestroy(es->heap);
3218 HeapFree(GetProcessHeap(), 0, es);
3219 SetInfoPtr(hwnd,0);
3220}
3221
3222
3223/*********************************************************************
3224 *
3225 * WM_ERASEBKGND
3226 *
3227 */
3228static LRESULT EDIT_WM_EraseBkGnd(HWND hwnd, EDITSTATE *es, HDC dc)
3229{
3230 HBRUSH brush;
3231 RECT rc;
3232
3233 HideCaret(hwnd);
3234
3235 if (!es->bEnableState || (es->style & ES_READONLY))
3236 brush = (HBRUSH)EDIT_SEND_CTLCOLORSTATIC(hwnd, dc);
3237 else
3238 brush = (HBRUSH)EDIT_SEND_CTLCOLOR(hwnd, dc);
3239
3240 if (!brush)
3241 brush = (HBRUSH)GetStockObject(WHITE_BRUSH);
3242
3243 GetClientRect(hwnd, &rc);
3244 IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
3245 GetClipBox(dc, &rc);
3246 /*
3247 * FIXME: specs say that we should UnrealizeObject() the brush,
3248 * but the specs of UnrealizeObject() say that we shouldn't
3249 * unrealize a stock object. The default brush that
3250 * DefWndProc() returns is ... a stock object.
3251 */
3252 FillRect(dc, &rc, brush);
3253
3254 ShowCaret(hwnd);
3255
3256 return -1;
3257}
3258
3259
3260/*********************************************************************
3261 *
3262 * WM_GETTEXT
3263 *
3264 */
3265static INT EDIT_WM_GetText(HWND hwnd, EDITSTATE *es, INT count, LPSTR text)
3266{
3267 INT len;
3268
3269 if (es->text == NULL) // the only case of failure i can imagine
3270 return 0;
3271
3272 len = min(count, lstrlenA(es->text)+1); // determine length
3273 lstrcpynA(text, es->text, len); // copy as much as possible
3274 return len;
3275}
3276
3277
3278/*********************************************************************
3279 *
3280 * EDIT_HScroll_Hack
3281 *
3282 * 16 bit notepad needs this. Actually it is not _our_ hack,
3283 * it is notepad's. Notepad is sending us scrollbar messages with
3284 * undocumented parameters without us even having a scrollbar ... !?!?
3285 *
3286 */
3287static LRESULT EDIT_HScroll_Hack(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar)
3288{
3289 INT dx = 0;
3290 INT fw = es->format_rect.right - es->format_rect.left;
3291 LRESULT ret = 0;
3292
3293 if (!(es->flags & EF_HSCROLL_HACK)) {
3294 //ERR_(edit)("hacked WM_HSCROLL handler invoked\n");
3295 //ERR_(edit)(" if you are _not_ running 16 bit notepad, please report\n");
3296 //ERR_(edit)(" (this message is only displayed once per edit control)\n");
3297 es->flags |= EF_HSCROLL_HACK;
3298 }
3299
3300 switch (action) {
3301 case SB_LINELEFT:
3302 if (es->x_offset)
3303 dx = -es->char_width;
3304 break;
3305 case SB_LINERIGHT:
3306 if (es->x_offset < es->text_width)
3307 dx = es->char_width;
3308 break;
3309 case SB_PAGELEFT:
3310 if (es->x_offset)
3311 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3312 break;
3313 case SB_PAGERIGHT:
3314 if (es->x_offset < es->text_width)
3315 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3316 break;
3317 case SB_LEFT:
3318 if (es->x_offset)
3319 dx = -es->x_offset;
3320 break;
3321 case SB_RIGHT:
3322 if (es->x_offset < es->text_width)
3323 dx = es->text_width - es->x_offset;
3324 break;
3325 case SB_THUMBTRACK:
3326 es->flags |= EF_HSCROLL_TRACK;
3327 dx = pos * es->text_width / 100 - es->x_offset;
3328 break;
3329 case SB_THUMBPOSITION:
3330 es->flags &= ~EF_HSCROLL_TRACK;
3331 if (!(dx = pos * es->text_width / 100 - es->x_offset))
3332 EDIT_NOTIFY_PARENT(hwnd, EN_HSCROLL);
3333 break;
3334 case SB_ENDSCROLL:
3335 break;
3336
3337 default:
3338 //ERR_(edit)("undocumented (hacked) WM_HSCROLL parameter, please report\n");
3339 return 0;
3340 }
3341 if (dx)
3342 EDIT_EM_LineScroll(hwnd, es, dx, 0);
3343 return ret;
3344}
3345
3346
3347/*********************************************************************
3348 *
3349 * WM_HSCROLL
3350 *
3351 */
3352static LRESULT EDIT_WM_HScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar)
3353{
3354 INT dx;
3355 INT fw;
3356
3357 if (!(es->style & ES_MULTILINE))
3358 return 0;
3359
3360 if (!(es->style & ES_AUTOHSCROLL))
3361 return 0;
3362
3363 if (!(es->style & WS_HSCROLL))
3364 return EDIT_HScroll_Hack(hwnd, es, action, pos, scroll_bar);
3365
3366 dx = 0;
3367 fw = es->format_rect.right - es->format_rect.left;
3368 switch (action) {
3369 case SB_LINELEFT:
3370 if (es->x_offset)
3371 dx = -es->char_width;
3372 break;
3373 case SB_LINERIGHT:
3374 if (es->x_offset < es->text_width)
3375 dx = es->char_width;
3376 break;
3377 case SB_PAGELEFT:
3378 if (es->x_offset)
3379 dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3380 break;
3381 case SB_PAGERIGHT:
3382 if (es->x_offset < es->text_width)
3383 dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
3384 break;
3385 case SB_LEFT:
3386 if (es->x_offset)
3387 dx = -es->x_offset;
3388 break;
3389 case SB_RIGHT:
3390 if (es->x_offset < es->text_width)
3391 dx = es->text_width - es->x_offset;
3392 break;
3393 case SB_THUMBTRACK:
3394 es->flags |= EF_HSCROLL_TRACK;
3395 dx = pos - es->x_offset;
3396 break;
3397 case SB_THUMBPOSITION:
3398 es->flags &= ~EF_HSCROLL_TRACK;
3399 if (!(dx = pos - es->x_offset)) {
3400 SetScrollPos(hwnd, SB_HORZ, pos, TRUE);
3401 EDIT_NOTIFY_PARENT(hwnd, EN_HSCROLL);
3402 }
3403 break;
3404 case SB_ENDSCROLL:
3405 break;
3406
3407 default:
3408 //ERR_(edit)("undocumented WM_HSCROLL parameter, please report\n");
3409 return 0;
3410 }
3411 if (dx)
3412 EDIT_EM_LineScroll(hwnd, es, dx, 0);
3413 return 0;
3414}
3415
3416
3417/*********************************************************************
3418 *
3419 * EDIT_CheckCombo
3420 *
3421 */
3422static BOOL EDIT_CheckCombo(HWND hwnd, EDITSTATE *es, UINT msg, INT key, DWORD key_data)
3423{
3424 HWND hLBox = es->hwndListBox;
3425 HWND hCombo;
3426 BOOL bDropped;
3427 int nEUI;
3428
3429 if (!hLBox)
3430 return FALSE;
3431
3432 hCombo = GetParent(hwnd);
3433 bDropped = TRUE;
3434 nEUI = 0;
3435
3436 //TRACE_(combo)("[%04x]: handling msg %04x (%04x)\n",
3437 // wnd->hwndSelf, (UINT16)msg, (UINT16)key);
3438
3439 if (key == VK_UP || key == VK_DOWN)
3440 {
3441 if (SendMessageA(hCombo, CB_GETEXTENDEDUI, 0, 0))
3442 nEUI = 1;
3443
3444 if (msg == WM_KEYDOWN || nEUI)
3445 bDropped = (BOOL)SendMessageA(hCombo, CB_GETDROPPEDSTATE, 0, 0);
3446 }
3447
3448 switch (msg)
3449 {
3450 case WM_KEYDOWN:
3451 if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
3452 {
3453 /* make sure ComboLBox pops up */
3454 SendMessageA(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
3455 key = VK_F4;
3456 nEUI = 2;
3457 }
3458
3459 SendMessageA(hLBox, WM_KEYDOWN, (WPARAM)key, 0);
3460 break;
3461
3462 case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
3463 if (nEUI)
3464 SendMessageA(hCombo, CB_SHOWDROPDOWN, bDropped ? FALSE : TRUE, 0);
3465 else
3466 SendMessageA(hLBox, WM_KEYDOWN, (WPARAM)VK_F4, 0);
3467 break;
3468 }
3469
3470 if(nEUI == 2)
3471 SendMessageA(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
3472
3473 return TRUE;
3474}
3475
3476/*********************************************************************
3477 *
3478 * WM_KEYDOWN
3479 *
3480 * Handling of special keys that don't produce a WM_CHAR
3481 * (i.e. non-printable keys) & Backspace & Delete
3482 *
3483 */
3484static LRESULT EDIT_WM_KeyDown(HWND hwnd, EDITSTATE *es, INT key, DWORD key_data)
3485{
3486 BOOL shift;
3487 BOOL control;
3488
3489 if (GetKeyState(VK_MENU) & 0x8000)
3490 return 0;
3491
3492 shift = GetKeyState(VK_SHIFT) & 0x8000;
3493 control = GetKeyState(VK_CONTROL) & 0x8000;
3494
3495 switch (key) {
3496 case VK_F4:
3497 case VK_UP:
3498 if (EDIT_CheckCombo(hwnd,es, WM_KEYDOWN, key, key_data) || key == VK_F4)
3499 break;
3500 /* fall through */
3501 case VK_LEFT:
3502 if ((es->style & ES_MULTILINE) && (key == VK_UP))
3503 EDIT_MoveUp_ML(hwnd, es, shift);
3504 else
3505 if (control)
3506 EDIT_MoveWordBackward(hwnd, es, shift);
3507 else
3508 EDIT_MoveBackward(hwnd, es, shift);
3509 break;
3510 case VK_DOWN:
3511 if (EDIT_CheckCombo(hwnd,es, WM_KEYDOWN, key, key_data))
3512 break;
3513 /* fall through */
3514 case VK_RIGHT:
3515 if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
3516 EDIT_MoveDown_ML(hwnd, es, shift);
3517 else if (control)
3518 EDIT_MoveWordForward(hwnd, es, shift);
3519 else
3520 EDIT_MoveForward(hwnd, es, shift);
3521 break;
3522 case VK_HOME:
3523 EDIT_MoveHome(hwnd, es, shift);
3524 break;
3525 case VK_END:
3526 EDIT_MoveEnd(hwnd, es, shift);
3527 break;
3528 case VK_PRIOR:
3529 if (es->style & ES_MULTILINE)
3530 EDIT_MovePageUp_ML(hwnd, es, shift);
3531 else
3532 EDIT_CheckCombo(hwnd, es, WM_KEYDOWN, key, key_data);
3533 break;
3534 case VK_NEXT:
3535 if (es->style & ES_MULTILINE)
3536 EDIT_MovePageDown_ML(hwnd, es, shift);
3537 else
3538 EDIT_CheckCombo(hwnd, es, WM_KEYDOWN, key, key_data);
3539 break;
3540 case VK_DELETE:
3541 if (!(es->style & ES_READONLY) && !(shift && control)) {
3542 if (es->selection_start != es->selection_end) {
3543 if (shift)
3544 EDIT_WM_Cut(hwnd, es);
3545 else
3546 EDIT_WM_Clear(hwnd, es);
3547 } else {
3548 if (shift) {
3549 /* delete character left of caret */
3550 EDIT_EM_SetSel(hwnd, es, -1, 0, FALSE);
3551 EDIT_MoveBackward(hwnd, es, TRUE);
3552 EDIT_WM_Clear(hwnd, es);
3553 } else if (control) {
3554 /* delete to end of line */
3555 EDIT_EM_SetSel(hwnd, es, -1, 0, FALSE);
3556 EDIT_MoveEnd(hwnd, es, TRUE);
3557 EDIT_WM_Clear(hwnd, es);
3558 } else {
3559 /* delete character right of caret */
3560 EDIT_EM_SetSel(hwnd, es, -1, 0, FALSE);
3561 EDIT_MoveForward(hwnd, es, TRUE);
3562 EDIT_WM_Clear(hwnd, es);
3563 }
3564 }
3565 }
3566 break;
3567 case VK_INSERT:
3568 if (shift) {
3569 if (!(es->style & ES_READONLY))
3570 EDIT_WM_Paste(hwnd, es);
3571 } else if (control)
3572 EDIT_WM_Copy(hwnd, es);
3573 break;
3574 case VK_RETURN:
3575 /* If the edit doesn't want the return send a message to the default object */
3576 if(!(es->style & ES_WANTRETURN))
3577 {
3578 HWND hwndParent = GetParent(hwnd);
3579 DWORD dw = SendMessageA( hwndParent, DM_GETDEFID, 0, 0 );
3580 if (HIWORD(dw) == DC_HASDEFID)
3581 {
3582 SendMessageA( hwndParent, WM_COMMAND,
3583 MAKEWPARAM( LOWORD(dw), BN_CLICKED ),
3584 (LPARAM)GetDlgItem( hwndParent, LOWORD(dw) ) );
3585 }
3586 }
3587 break;
3588 }
3589 return 0;
3590}
3591
3592
3593/*********************************************************************
3594 *
3595 * WM_KILLFOCUS
3596 *
3597 */
3598static LRESULT EDIT_WM_KillFocus(HWND hwnd, EDITSTATE *es, HWND window_getting_focus)
3599{
3600 es->flags &= ~EF_FOCUSED;
3601 DestroyCaret();
3602 if(!(es->style & ES_NOHIDESEL))
3603 EDIT_InvalidateText(hwnd, es, es->selection_start, es->selection_end);
3604 EDIT_NOTIFY_PARENT(hwnd, EN_KILLFOCUS);
3605 return 0;
3606}
3607
3608
3609/*********************************************************************
3610 *
3611 * WM_LBUTTONDBLCLK
3612 *
3613 * The caret position has been set on the WM_LBUTTONDOWN message
3614 *
3615 */
3616static LRESULT EDIT_WM_LButtonDblClk(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
3617{
3618 INT s;
3619 INT e = es->selection_end;
3620 INT l;
3621 INT li;
3622 INT ll;
3623
3624 if (!(es->flags & EF_FOCUSED))
3625 return 0;
3626
3627 l = EDIT_EM_LineFromChar(hwnd, es, e);
3628 li = EDIT_EM_LineIndex(hwnd, es, l);
3629 ll = EDIT_EM_LineLength(hwnd, es, e);
3630 s = li + EDIT_CallWordBreakProc (hwnd, es, li, e - li, ll, WB_LEFT);
3631 e = li + EDIT_CallWordBreakProc(hwnd, es, li, e - li, ll, WB_RIGHT);
3632 EDIT_EM_SetSel(hwnd, es, s, e, FALSE);
3633 EDIT_EM_ScrollCaret(hwnd, es);
3634 return 0;
3635}
3636
3637
3638/*********************************************************************
3639 *
3640 * WM_LBUTTONDOWN
3641 *
3642 */
3643static LRESULT EDIT_WM_LButtonDown(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
3644{
3645 INT e;
3646 BOOL after_wrap;
3647
3648 if (!(es->flags & EF_FOCUSED))
3649 SetFocus(hwnd);
3650
3651 es->bCaptureState = TRUE;
3652 SetCapture(hwnd);
3653 EDIT_ConfinePoint(hwnd, es, &x, &y);
3654 e = EDIT_CharFromPos(hwnd, es, x, y, &after_wrap);
3655 EDIT_EM_SetSel(hwnd, es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
3656 EDIT_EM_ScrollCaret(hwnd, es);
3657 es->region_posx = es->region_posy = 0;
3658 SetTimer(hwnd, 0, 100, NULL);
3659 return 0;
3660}
3661
3662
3663/*********************************************************************
3664 *
3665 * WM_LBUTTONUP
3666 *
3667 */
3668static LRESULT EDIT_WM_LButtonUp(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
3669{
3670 if (es->bCaptureState)
3671 {
3672 KillTimer(hwnd,0);
3673 ReleaseCapture();
3674 }
3675 es->bCaptureState = FALSE;
3676
3677 return 0;
3678}
3679
3680static LRESULT EDIT_WM_CaptureChanged(HWND hwnd,EDITSTATE *es)
3681{
3682 if (es->bCaptureState) KillTimer(hwnd,0);
3683 es->bCaptureState = FALSE;
3684
3685 return 0;
3686}
3687
3688/*********************************************************************
3689 *
3690 * WM_MOUSEMOVE
3691 *
3692 */
3693static LRESULT EDIT_WM_MouseMove(HWND hwnd, EDITSTATE *es, DWORD keys, INT x, INT y)
3694{
3695 INT e;
3696 BOOL after_wrap;
3697 INT prex, prey;
3698
3699 if (!es->bCaptureState) return 0;
3700
3701 /*
3702 * FIXME: gotta do some scrolling if outside client
3703 * area. Maybe reset the timer ?
3704 */
3705 prex = x; prey = y;
3706 EDIT_ConfinePoint(hwnd, es, &x, &y);
3707 es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
3708 es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
3709 e = EDIT_CharFromPos(hwnd, es, x, y, &after_wrap);
3710 EDIT_EM_SetSel(hwnd, es, es->selection_start, e, after_wrap);
3711
3712 return 0;
3713}
3714
3715
3716/*********************************************************************
3717 *
3718 * WM_NCCREATE
3719 *
3720 */
3721static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTA cs)
3722{
3723 EDITSTATE *es;
3724
3725 if (!(es = (EDITSTATE*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
3726 return FALSE;
3727 SetInfoPtr(hwnd,(DWORD)es);
3728
3729 /*
3730 * Note: since the EDITSTATE has not been fully initialized yet,
3731 * we can't use any API calls that may send
3732 * WM_XXX messages before WM_NCCREATE is completed.
3733 */
3734
3735 if (!(es->heap = HeapCreate(0, 0x10000, 0)))
3736 return FALSE;
3737 es->style = cs->style;
3738
3739 es->bEnableState = !(cs->style & WS_DISABLED);
3740
3741 /*
3742 * In Win95 look and feel, the WS_BORDER style is replaced by the
3743 * WS_EX_CLIENTEDGE style for the edit control. This gives the edit
3744 * control a non client area.
3745 */
3746 if (es->style & WS_BORDER)
3747 {
3748 es->style &= ~WS_BORDER;
3749 SetWindowLongA(hwnd,GWL_STYLE,GetWindowLongA(hwnd,GWL_STYLE) & ~WS_BORDER);
3750 SetWindowLongA(hwnd,GWL_EXSTYLE,GetWindowLongA(hwnd,GWL_EXSTYLE) | WS_EX_CLIENTEDGE);
3751 }
3752
3753 if (es->style & ES_COMBO)
3754 es->hwndListBox = GetDlgItem(cs->hwndParent, ID_CB_LISTBOX);
3755
3756 if (es->style & ES_MULTILINE) {
3757 es->buffer_size = BUFSTART_MULTI;
3758 es->buffer_limit = BUFLIMIT_MULTI;
3759 if (es->style & WS_VSCROLL)
3760 es->style |= ES_AUTOVSCROLL;
3761 if (es->style & WS_HSCROLL)
3762 es->style |= ES_AUTOHSCROLL;
3763 es->style &= ~ES_PASSWORD;
3764 if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
3765 if (es->style & ES_RIGHT)
3766 es->style &= ~ES_CENTER;
3767 es->style &= ~WS_HSCROLL;
3768 es->style &= ~ES_AUTOHSCROLL;
3769 }
3770
3771 /* FIXME: for now, all multi line controls are AUTOVSCROLL */
3772 es->style |= ES_AUTOVSCROLL;
3773 } else {
3774 es->buffer_size = BUFSTART_SINGLE;
3775 es->buffer_limit = BUFLIMIT_SINGLE;
3776 es->style &= ~ES_CENTER;
3777 es->style &= ~ES_RIGHT;
3778 es->style &= ~WS_HSCROLL;
3779 es->style &= ~WS_VSCROLL;
3780 es->style &= ~ES_AUTOVSCROLL;
3781 es->style &= ~ES_WANTRETURN;
3782 if (es->style & ES_UPPERCASE) {
3783 es->style &= ~ES_LOWERCASE;
3784 es->style &= ~ES_NUMBER;
3785 } else if (es->style & ES_LOWERCASE)
3786 es->style &= ~ES_NUMBER;
3787 if (es->style & ES_PASSWORD)
3788 es->password_char = '*';
3789
3790 /* FIXME: for now, all single line controls are AUTOHSCROLL */
3791 es->style |= ES_AUTOHSCROLL;
3792 }
3793 if (!(es->text = (char*)HeapAlloc(es->heap, 0, es->buffer_size + 1)))
3794 return FALSE;
3795 es->buffer_size = HeapSize(es->heap, 0, es->text) - 1;
3796 if (!(es->undo_text = (char*)HeapAlloc(es->heap, 0, es->buffer_size + 1)))
3797 return FALSE;
3798 es->undo_buffer_size = HeapSize(es->heap, 0, es->undo_text) - 1;
3799 *es->text = '\0';
3800 if (es->style & ES_MULTILINE)
3801 if (!(es->first_line_def = (LINEDEF*)HeapAlloc(es->heap, HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
3802 return FALSE;
3803 es->line_count = 1;
3804
3805 return TRUE;
3806}
3807
3808static VOID EDIT_Draw(HWND hwnd,EDITSTATE *es,HDC hdc,BOOL eraseBkGnd)
3809{
3810 INT i;
3811 HFONT old_font = 0;
3812 RECT rc;
3813 RECT rcLine;
3814 RECT rcRgn;
3815 BOOL rev = es->bEnableState && ((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL));
3816
3817 HideCaret(hwnd);
3818
3819 if (eraseBkGnd)
3820 {
3821 HBRUSH brush;
3822
3823 if (!es->bEnableState || (es->style & ES_READONLY))
3824 brush = (HBRUSH)EDIT_SEND_CTLCOLORSTATIC(hwnd, hdc);
3825 else
3826 brush = (HBRUSH)EDIT_SEND_CTLCOLOR(hwnd, hdc);
3827
3828 if (!brush)
3829 brush = (HBRUSH)GetStockObject(WHITE_BRUSH);
3830
3831 GetClientRect(hwnd, &rc);
3832 /*
3833 * FIXME: specs say that we should UnrealizeObject() the brush,
3834 * but the specs of UnrealizeObject() say that we shouldn't
3835 * unrealize a stock object. The default brush that
3836 * DefWndProc() returns is ... a stock object.
3837 */
3838 FillRect(hdc, &rc, brush);
3839 }
3840
3841 if(es->style & WS_BORDER)
3842 {
3843 GetClientRect(hwnd, &rc);
3844 if(es->style & ES_MULTILINE)
3845 {
3846 if(es->style & WS_HSCROLL) rc.bottom++;
3847 if(es->style & WS_VSCROLL) rc.right++;
3848 }
3849 Rectangle(hdc, rc.left, rc.top, rc.right, rc.bottom);
3850 }
3851
3852 IntersectClipRect(hdc, es->format_rect.left,
3853 es->format_rect.top,
3854 es->format_rect.right,
3855 es->format_rect.bottom);
3856 if (es->style & ES_MULTILINE)
3857 {
3858 GetClientRect(hwnd, &rc);
3859 IntersectClipRect(hdc, rc.left, rc.top, rc.right, rc.bottom);
3860 }
3861 if (es->font) old_font = SelectObject(hdc, es->font);
3862 if (!es->bEnableState || (es->style & ES_READONLY))
3863 EDIT_SEND_CTLCOLORSTATIC(hwnd, hdc);
3864 else
3865 EDIT_SEND_CTLCOLOR(hwnd, hdc);
3866 if (!es->bEnableState)
3867 SetTextColor(hdc, GetSysColor(COLOR_GRAYTEXT));
3868 GetClipBox(hdc, &rcRgn);
3869 if (es->style & ES_MULTILINE)
3870 {
3871 INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
3872
3873 for (i = es->y_offset ; i <= MIN(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++)
3874 {
3875 EDIT_GetLineRect(hwnd,hdc, es, i, 0, -1, &rcLine);
3876 if (IntersectRect(&rc, &rcRgn, &rcLine))
3877 EDIT_PaintLine(hwnd, es, hdc, i, rev);
3878 }
3879 } else
3880 {
3881 EDIT_GetLineRect(hwnd,hdc, es, 0, 0, -1, &rcLine);
3882 if (IntersectRect(&rc, &rcRgn, &rcLine))
3883 EDIT_PaintLine(hwnd, es, hdc, 0, rev);
3884 }
3885 if (es->font) SelectObject(hdc, old_font);
3886 if (es->flags & EF_FOCUSED)
3887 EDIT_SetCaretPos(hwnd, es, es->selection_end,es->flags & EF_AFTER_WRAP);
3888
3889 ShowCaret(hwnd);
3890}
3891
3892static VOID EDIT_Refresh(HWND hwnd,EDITSTATE *es,BOOL useCache)
3893{
3894 HDC hdc,hdcCompatible;
3895 HBITMAP bitmap,oldbmp;
3896 RECT rect;
3897
3898 if (es->flags & EF_UPDATE)
3899 {
3900 //CB: don't reset flag or EN_CHANGE is lost!
3901 //es->flags &= ~EF_UPDATE;
3902 EDIT_NOTIFY_PARENT(hwnd,EN_UPDATE);
3903 }
3904
3905 if (!IsWindowVisible(hwnd)) return;
3906
3907 if (!useCache)
3908 {
3909 InvalidateRect(hwnd,NULL,TRUE);
3910 return;
3911 }
3912
3913 //CB: original control redraws many times, cache drawing
3914 HideCaret(hwnd);
3915 GetClientRect(hwnd,&rect);
3916 hdc = GetDC(hwnd);
3917 hdcCompatible = CreateCompatibleDC(hdc);
3918 bitmap = CreateCompatibleBitmap(hdc,rect.right,rect.bottom);
3919 oldbmp = SelectObject(hdcCompatible,bitmap);
3920 EDIT_Draw(hwnd,es,hdcCompatible,TRUE);
3921 SelectClipRgn(hdcCompatible,0);
3922 BitBlt(hdc,0,0,rect.right,rect.bottom,hdcCompatible,0,0,SRCCOPY);
3923 SelectObject(hdcCompatible,oldbmp);
3924 DeleteObject(bitmap);
3925 DeleteDC(hdcCompatible);
3926 ReleaseDC(hwnd,hdc);
3927 ShowCaret(hwnd);
3928}
3929
3930/*********************************************************************
3931 *
3932 * WM_PAINT
3933 *
3934 */
3935static void EDIT_WM_Paint(HWND hwnd, EDITSTATE *es,WPARAM wParam)
3936{
3937 PAINTSTRUCT ps;
3938 HDC hdc;
3939
3940 if (!wParam) hdc = BeginPaint(hwnd, &ps);
3941 else hdc = (HDC) wParam;
3942
3943 EDIT_Draw(hwnd,es,hdc,FALSE);
3944
3945 if (!wParam) EndPaint(hwnd, &ps);
3946}
3947
3948
3949/*********************************************************************
3950 *
3951 * WM_PASTE
3952 *
3953 */
3954static void EDIT_WM_Paste(HWND hwnd, EDITSTATE *es)
3955{
3956 HGLOBAL hsrc;
3957 LPSTR src;
3958
3959 OpenClipboard(hwnd);
3960 hsrc = GetClipboardData(CF_TEXT);
3961 if (hsrc) {
3962 src = (LPSTR)GlobalLock(hsrc);
3963 EDIT_EM_ReplaceSel(hwnd, es, TRUE, src);
3964 GlobalUnlock(hsrc);
3965
3966 if (es->flags & EF_UPDATE) {
3967 es->flags &= ~EF_UPDATE;
3968 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
3969 }
3970 }
3971 CloseClipboard();
3972}
3973
3974
3975/*********************************************************************
3976 *
3977 * WM_SETFOCUS
3978 *
3979 */
3980static void EDIT_WM_SetFocus(HWND hwnd, EDITSTATE *es, HWND window_losing_focus)
3981{
3982 es->flags |= EF_FOCUSED;
3983 CreateCaret(hwnd, 0, 2, es->line_height);
3984 EDIT_SetCaretPos(hwnd, es, es->selection_end,
3985 es->flags & EF_AFTER_WRAP);
3986 if(!(es->style & ES_NOHIDESEL))
3987 EDIT_InvalidateText(hwnd, es, es->selection_start, es->selection_end);
3988 ShowCaret(hwnd);
3989 EDIT_NOTIFY_PARENT(hwnd, EN_SETFOCUS);
3990}
3991
3992/*********************************************************************
3993 *
3994 * WM_SETFONT
3995 *
3996 * With Win95 look the margins are set to default font value unless
3997 * the system font (font == 0) is being set, in which case they are left
3998 * unchanged.
3999 *
4000 */
4001static void EDIT_WM_SetFont(HWND hwnd, EDITSTATE *es, HFONT font, BOOL redraw)
4002{
4003 TEXTMETRICA tm;
4004 HDC dc;
4005 HFONT old_font = 0;
4006 RECT r;
4007
4008 dc = GetDC(hwnd);
4009 if (font)
4010 old_font = SelectObject(dc, font);
4011 if (!GetTextMetricsA(dc, &tm))
4012 {
4013 if (font) SelectObject(dc,old_font);
4014 ReleaseDC(hwnd,dc);
4015
4016 return;
4017 }
4018 es->font = font;
4019 es->line_height = tm.tmHeight;
4020
4021 es->char_width = tm.tmAveCharWidth;
4022 if (font)
4023 SelectObject(dc, old_font);
4024 ReleaseDC(hwnd, dc);
4025 if (font)
4026 EDIT_EM_SetMargins(hwnd, es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
4027 EC_USEFONTINFO, EC_USEFONTINFO);
4028 /* Force the recalculation of the format rect for each font change */
4029 GetClientRect(hwnd, &r);
4030 EDIT_SetRectNP(hwnd, es, &r);
4031 if (es->style & ES_MULTILINE)
4032 EDIT_BuildLineDefs_ML(hwnd,es);
4033
4034 if (redraw)
4035 EDIT_Refresh(hwnd,es,FALSE);
4036 if (es->flags & EF_FOCUSED) {
4037 DestroyCaret();
4038 CreateCaret(hwnd, 0, 2, es->line_height);
4039 EDIT_SetCaretPos(hwnd, es, es->selection_end,
4040 es->flags & EF_AFTER_WRAP);
4041 ShowCaret(hwnd);
4042 }
4043}
4044
4045
4046/*********************************************************************
4047 *
4048 * WM_SETTEXT
4049 *
4050 * NOTES
4051 * For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
4052 * The modified flag is reset. No notifications are sent.
4053 *
4054 * For single-line controls, reception of WM_SETTEXT triggers:
4055 * The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
4056 *
4057 */
4058static void EDIT_WM_SetText(HWND hwnd, EDITSTATE *es, LPCSTR text)
4059{
4060#ifdef __WIN32OS2__
4061 //SvL: Acrobat Distiller keeps on sending WM_SETTEXT with the same
4062 // string in responds to a WM_COMMAND with EN_UPDATE -> stack
4063 // overflow (TODO: Need to check if this behaviour is correct compared to NT)
4064 if(text && es->text) {
4065 if(!strcmp(es->text, text)) {
4066 return;
4067 }
4068 }
4069#endif
4070 es->selection_start = 0;
4071 es->selection_end = lstrlenA(es->text);
4072 if (es->flags & EF_FOCUSED)
4073 EDIT_SetCaretPos(hwnd, es, es->selection_end, FALSE);
4074
4075 if (text) {
4076 //TRACE_(edit)("\t'%s'\n", text);
4077 EDIT_EM_ReplaceSel(hwnd, es, FALSE, text);
4078 } else {
4079 //TRACE_(edit)("\t<NULL>\n");
4080 EDIT_EM_ReplaceSel(hwnd, es, FALSE, "");
4081 }
4082 es->x_offset = 0;
4083 if (es->style & ES_MULTILINE) {
4084 es->flags &= ~EF_UPDATE;
4085 } else {
4086 es->flags |= EF_UPDATE;
4087 }
4088 es->flags &= ~EF_MODIFIED;
4089 EDIT_EM_SetSel(hwnd, es, 0, 0, FALSE);
4090 EDIT_EM_ScrollCaret(hwnd, es);
4091 EDIT_UpdateScrollBars(hwnd,es,TRUE,TRUE);
4092 if (es->flags & EF_UPDATE)
4093 {
4094 EDIT_NOTIFY_PARENT(hwnd,EN_UPDATE);
4095 /* EN_CHANGE notification need to be sent too
4096 Windows doc says it's only done after the display,
4097 the doc is WRONG. EN_CHANGE notification is sent
4098 while processing WM_SETTEXT */
4099 EDIT_NOTIFY_PARENT(hwnd, EN_CHANGE);
4100 es->flags &= ~EF_UPDATE;
4101 }
4102}
4103
4104
4105/*********************************************************************
4106 *
4107 * WM_SIZE
4108 *
4109 */
4110static void EDIT_WM_Size(HWND hwnd, EDITSTATE *es, UINT action, INT width, INT height)
4111{
4112 if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
4113 RECT rc;
4114 SetRect(&rc, 0, 0, width, height);
4115 EDIT_SetRectNP(hwnd, es, &rc);
4116 EDIT_Refresh(hwnd,es,FALSE);
4117 }
4118}
4119
4120
4121/*********************************************************************
4122 *
4123 * WM_SYSKEYDOWN
4124 *
4125 */
4126static LRESULT EDIT_WM_SysKeyDown(HWND hwnd, EDITSTATE *es, INT key, DWORD key_data)
4127{
4128 if ((key == VK_BACK) && (key_data & 0x2000)) {
4129 if (EDIT_EM_CanUndo(hwnd, es))
4130 EDIT_EM_Undo(hwnd, es);
4131 return 0;
4132 } else if ((key == VK_UP) || (key == VK_DOWN))
4133 {
4134 if (EDIT_CheckCombo(hwnd,es, WM_SYSKEYDOWN, key, key_data))
4135 return 0;
4136 }
4137 return DefWindowProcA(hwnd, WM_SYSKEYDOWN, (WPARAM)key, (LPARAM)key_data);
4138}
4139
4140
4141/*********************************************************************
4142 *
4143 * WM_TIMER
4144 *
4145 */
4146static void EDIT_WM_Timer(HWND hwnd, EDITSTATE *es, INT id, TIMERPROC timer_proc)
4147{
4148 if (es->region_posx < 0) {
4149 EDIT_MoveBackward(hwnd, es, TRUE);
4150 } else if (es->region_posx > 0) {
4151 EDIT_MoveForward(hwnd, es, TRUE);
4152 }
4153
4154 if (!(es->style & ES_MULTILINE)) return;
4155
4156 if (es->region_posy < 0)
4157 {
4158 EDIT_MoveUp_ML(hwnd,es,TRUE);
4159 } else if (es->region_posy > 0)
4160 {
4161 EDIT_MoveDown_ML(hwnd,es,TRUE);
4162 }
4163}
4164
4165
4166/*********************************************************************
4167 *
4168 * EDIT_VScroll_Hack
4169 *
4170 * 16 bit notepad needs this. Actually it is not _our_ hack,
4171 * it is notepad's. Notepad is sending us scrollbar messages with
4172 * undocumented parameters without us even having a scrollbar ... !?!?
4173 *
4174 */
4175static LRESULT EDIT_VScroll_Hack(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar)
4176{
4177 INT dy = 0;
4178 LRESULT ret = 0;
4179
4180 if (!(es->flags & EF_VSCROLL_HACK)) {
4181 //ERR_(edit)("hacked WM_VSCROLL handler invoked\n");
4182 //ERR_(edit)(" if you are _not_ running 16 bit notepad, please report\n");
4183 //ERR_(edit)(" (this message is only displayed once per edit control)\n");
4184 es->flags |= EF_VSCROLL_HACK;
4185 }
4186
4187 switch (action) {
4188 case SB_LINEUP:
4189 case SB_LINEDOWN:
4190 case SB_PAGEUP:
4191 case SB_PAGEDOWN:
4192 EDIT_EM_Scroll(hwnd, es, action);
4193 return 0;
4194 case SB_TOP:
4195 dy = -es->y_offset;
4196 break;
4197 case SB_BOTTOM:
4198 dy = es->line_count - 1 - es->y_offset;
4199 break;
4200 case SB_THUMBTRACK:
4201 es->flags |= EF_VSCROLL_TRACK;
4202 dy = (pos * (es->line_count - 1) + 50) / 100 - es->y_offset;
4203 break;
4204 case SB_THUMBPOSITION:
4205 es->flags &= ~EF_VSCROLL_TRACK;
4206 if (!(dy = (pos * (es->line_count - 1) + 50) / 100 - es->y_offset))
4207 EDIT_NOTIFY_PARENT(hwnd, EN_VSCROLL);
4208 break;
4209 case SB_ENDSCROLL:
4210 break;
4211
4212 default:
4213 //ERR_(edit)("undocumented (hacked) WM_VSCROLL parameter, please report\n");
4214 return 0;
4215 }
4216 if (dy)
4217 EDIT_EM_LineScroll(hwnd, es, 0, dy);
4218 return ret;
4219}
4220
4221
4222/*********************************************************************
4223 *
4224 * WM_VSCROLL
4225 *
4226 */
4227static LRESULT EDIT_WM_VScroll(HWND hwnd, EDITSTATE *es, INT action, INT pos, HWND scroll_bar)
4228{
4229 INT dy;
4230
4231 if (!(es->style & ES_MULTILINE))
4232 return 0;
4233
4234 if (!(es->style & ES_AUTOVSCROLL))
4235 return 0;
4236
4237 if (!(es->style & WS_VSCROLL))
4238 return EDIT_VScroll_Hack(hwnd, es, action, pos, scroll_bar);
4239
4240 dy = 0;
4241 switch (action) {
4242 case SB_LINEUP:
4243 case SB_LINEDOWN:
4244 case SB_PAGEUP:
4245 case SB_PAGEDOWN:
4246 EDIT_EM_Scroll(hwnd, es, action);
4247 return 0;
4248
4249 case SB_TOP:
4250 dy = -es->y_offset;
4251 break;
4252 case SB_BOTTOM:
4253 dy = es->line_count - 1 - es->y_offset;
4254 break;
4255 case SB_THUMBTRACK:
4256 es->flags |= EF_VSCROLL_TRACK;
4257 dy = pos - es->y_offset;
4258 break;
4259 case SB_THUMBPOSITION:
4260 es->flags &= ~EF_VSCROLL_TRACK;
4261 if (!(dy = pos - es->y_offset)) {
4262 SetScrollPos(hwnd, SB_VERT, pos, TRUE);
4263 EDIT_NOTIFY_PARENT(hwnd, EN_VSCROLL);
4264 }
4265 break;
4266 case SB_ENDSCROLL:
4267 break;
4268
4269 default:
4270 //ERR_(edit)("undocumented WM_VSCROLL action %d, please report\n",
4271 // action);
4272 return 0;
4273 }
4274 if (dy)
4275 EDIT_EM_LineScroll(hwnd, es, 0, dy);
4276 return 0;
4277}
4278
4279static LRESULT EDIT_WM_MouseWheel(HWND hwnd,EDITSTATE *es,WPARAM wParam,LPARAM lParam)
4280{
4281 short gcWheelDelta = 0;
4282 UINT pulScrollLines = 3;
4283 SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
4284
4285 if (wParam & (MK_SHIFT | MK_CONTROL))
4286 return DefWindowProcA(hwnd,WM_MOUSEWHEEL, wParam, lParam);
4287 gcWheelDelta -= (short) HIWORD(wParam);
4288 if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
4289 {
4290 int cLineScroll= (int) min((UINT) es->line_count, pulScrollLines);
4291
4292 cLineScroll *= (gcWheelDelta / WHEEL_DELTA);
4293 return EDIT_EM_LineScroll(hwnd, es, 0, cLineScroll);
4294 }
4295
4296 return 0;
4297}
4298
4299BOOL EDIT_Register()
4300{
4301 WNDCLASSA wndClass;
4302
4303//SvL: Don't check this now
4304// if (GlobalFindAtomA(EDITCLASSNAME)) return FALSE;
4305
4306 ZeroMemory(&wndClass,sizeof(WNDCLASSA));
4307 wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
4308 wndClass.lpfnWndProc = (WNDPROC)EditWndProc;
4309 wndClass.cbClsExtra = 0;
4310 wndClass.cbWndExtra = sizeof(VOID*);
4311 wndClass.hCursor = LoadCursorA(0,IDC_IBEAMA);
4312 wndClass.hbrBackground = (HBRUSH)0;
4313 wndClass.lpszClassName = EDITCLASSNAME;
4314
4315 return RegisterClassA(&wndClass);
4316}
4317
4318BOOL EDIT_Unregister()
4319{
4320 if (GlobalFindAtomA(EDITCLASSNAME))
4321 return UnregisterClassA(EDITCLASSNAME,(HINSTANCE)NULL);
4322 else return FALSE;
4323}
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