source: trunk/src/user32/new/scroll.cpp@ 2290

Last change on this file since 2290 was 2290, checked in by cbratschi, 26 years ago

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1/* $Id: scroll.cpp,v 1.7 2000-01-01 14:57:22 cbratschi Exp $ */
2/*
3 * Scrollbar control
4 *
5 * Copyright 1999 Christoph Bratschi
6 *
7 * Copyright 1993 Martin Ayotte
8 * Copyright 1994, 1996 Alexandre Julliard
9 *
10 * WINE version: 991031
11 *
12 * Status: complete
13 * Version: 5.00
14 */
15
16#include <stdlib.h>
17#include <os2win.h>
18#include "controls.h"
19#include "scroll.h"
20#include "win32wbase.h"
21#include "oslibwin.h"
22#include "initterm.h"
23#include "pmframe.h"
24
25#define SCROLL_MIN_RECT 4 /* Minimum size of the rectangle between the arrows */
26#define SCROLL_MIN_THUMB 6 /* Minimum size of the thumb in pixels */
27
28#define SCROLL_ARROW_THUMB_OVERLAP 0 /* Overlap between arrows and thumb */
29
30#define SCROLL_FIRST_DELAY 200 /* Delay (in ms) before first repetition when holding the button down */
31#define SCROLL_REPEAT_DELAY 50 /* Delay (in ms) between scroll repetitions */
32#define SCROLL_BLINK_DELAY 1000
33
34#define SCROLL_TIMER 0 /* Scroll timer id */
35#define BLINK_TIMER 1
36
37 /* Scroll-bar hit testing */
38enum SCROLL_HITTEST
39{
40 SCROLL_NOWHERE, /* Outside the scroll bar */
41 SCROLL_TOP_ARROW, /* Top or left arrow */
42 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
43 SCROLL_THUMB, /* Thumb rectangle */
44 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
45 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
46};
47
48 /* What to do in SetScrollInfo() */
49#define SA_SSI_HIDE 0x0001
50#define SA_SSI_SHOW 0x0002
51#define SA_SSI_REPAINT_INTERIOR 0x0004
52#define SA_SSI_REPAINT_ARROWS 0x0008
53#define SA_SSI_MOVE_THUMB 0x0010
54#define SA_SSI_REFRESH 0x0020
55
56 /* Thumb-tracking info */
57static HWND SCROLL_TrackingWin = 0;
58static INT SCROLL_TrackingBar = 0;
59static INT SCROLL_TrackingPos = 0;
60static INT SCROLL_TrackingVal = 0;
61 /* Focus info */
62static HWND SCROLL_FocusWin = 0;
63static BOOL SCROLL_HasFocus = FALSE;
64static BOOL SCROLL_Highlighted = FALSE;
65static BOOL SCROLL_Scrolling = FALSE;
66
67 /* Hit test code of the last button-down event */
68static enum SCROLL_HITTEST SCROLL_trackHitTest;
69static enum SCROLL_HITTEST SCROLL_lastHitTest;
70static BOOL SCROLL_trackVertical;
71
72 /* Is the moving thumb being displayed? */
73static BOOL SCROLL_MovingThumb = FALSE;
74
75// Get the scrollbar handle: works only with frame/control handles
76
77static HWND SCROLL_GetScrollHandle(HWND hwnd,INT nBar)
78{
79 switch(nBar)
80 {
81 case SB_HORZ:
82 case SB_VERT:
83 {
84 Win32BaseWindow *win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
85
86 if (!win32wnd) return 0;
87//CB: I removed WS_* check due to problems, but it should work
88 if (nBar == SB_HORZ)
89 return /*(win32wnd->getStyle() & WS_HSCROLL) ?*/ Win32BaseWindow::OS2ToWin32Handle(win32wnd->getHorzScrollHandle())/*:0*/;
90 else
91 return /*(win32wnd->getStyle() & WS_VSCROLL) ?*/ Win32BaseWindow::OS2ToWin32Handle(win32wnd->getVertScrollHandle())/*:0*/;
92 }
93
94 case SB_CTL:
95 return hwnd;
96
97 default:
98 return 0;
99 }
100}
101
102static HWND SCROLL_GetFrameHandle(HWND hwnd)
103{
104 Win32BaseWindow *win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
105
106 if (!win32wnd) return 0;
107 return Win32BaseWindow::GetWindowFromOS2FrameHandle(OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_OWNER))->getWindowHandle();
108}
109
110// Get the infoPtr: works only with scrollbar handles
111
112static SCROLLBAR_INFO *SCROLL_GetInfoPtr( HWND hwnd, INT nBar )
113{
114 Win32BaseWindow *win32wnd;
115 HWND hwndFrame;
116
117 switch(nBar)
118 {
119 case SB_HORZ:
120 case SB_VERT:
121 win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
122 if (!win32wnd) return NULL;
123 hwndFrame = OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_OWNER);
124 win32wnd = Win32BaseWindow::GetWindowFromOS2FrameHandle(hwndFrame);
125 if (!win32wnd) return NULL;
126 return win32wnd->getScrollInfo(nBar);
127
128 case SB_CTL:
129 return (SCROLLBAR_INFO*)GetInfoPtr(hwnd);
130 }
131
132 return NULL;
133}
134
135/* Scrollbar Functions */
136
137/***********************************************************************
138 * SCROLL_GetScrollBarRect
139 *
140 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
141 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
142 * 'arrowSize' returns the width or height of an arrow (depending on
143 * the orientation of the scrollbar), 'thumbSize' returns the size of
144 * the thumb, and 'thumbPos' returns the position of the thumb
145 * relative to the left or to the top.
146 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
147 */
148static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
149 INT *arrowSize, INT *thumbSize,
150 INT *thumbPos )
151{
152 INT pixels;
153 BOOL vertical;
154 RECT rectClient;
155
156 switch(nBar)
157 {
158 case SB_HORZ:
159 case SB_VERT:
160 GetClientRect( hwnd, lprect );
161 vertical = (nBar == SB_VERT);
162 break;
163
164 case SB_CTL:
165 {
166 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
167
168 GetClientRect( hwnd, lprect );
169 vertical = ((dwStyle & SBS_VERT) != 0);
170 break;
171 }
172
173 default:
174 return FALSE;
175 }
176
177 if (vertical) pixels = lprect->bottom - lprect->top;
178 else pixels = lprect->right - lprect->left;
179
180 if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
181 {
182 if (pixels > SCROLL_MIN_RECT)
183 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
184 else
185 *arrowSize = 0;
186 *thumbPos = *thumbSize = 0;
187 }
188 else
189 {
190 SCROLLBAR_INFO *info = SCROLL_GetInfoPtr( hwnd, nBar );
191
192 *arrowSize = GetSystemMetrics(SM_CXVSCROLL);
193 pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
194
195 if (info->Page)
196 {
197 *thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
198 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
199 }
200 else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
201
202 if (((pixels -= *thumbSize ) < 0) ||
203 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
204 {
205 /* Rectangle too small or scrollbar disabled -> no thumb */
206 *thumbPos = *thumbSize = 0;
207 }
208 else
209 {
210 INT max = info->MaxVal - MAX( info->Page-1, 0 );
211 if (info->MinVal >= max)
212 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
213 else
214 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
215 + pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
216 }
217 }
218 return vertical;
219}
220
221/***********************************************************************
222 * SCROLL_PtInRectEx
223 */
224static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
225{
226 RECT rect = *lpRect;
227
228 if (vertical)
229 {
230 INT w = lpRect->right-lpRect->left;
231
232 rect.left -= w;
233 rect.right += w;
234 rect.top -= w;
235 rect.bottom += w;
236 } else
237 {
238 INT h = lpRect->bottom-lpRect->top;
239
240 rect.top -= h;
241 rect.bottom += h;
242 rect.left -= h;
243 rect.right += h;
244 }
245
246 return PtInRect( &rect, pt );
247}
248
249/***********************************************************************
250 * SCROLL_HitTest
251 *
252 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
253 */
254static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
255 POINT pt, BOOL bDragging )
256{
257 INT arrowSize, thumbSize, thumbPos;
258 RECT rect;
259 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
260
261 if (!infoPtr) return SCROLL_NOWHERE;
262
263 BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
264 &arrowSize, &thumbSize, &thumbPos );
265
266 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
267 (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
268
269 if (vertical)
270 {
271 if (pt.y < rect.top + arrowSize) return (infoPtr->flags & ESB_DISABLE_LTUP) ? SCROLL_NOWHERE:SCROLL_TOP_ARROW;
272 if (pt.y >= rect.bottom - arrowSize) return (infoPtr->flags & ESB_DISABLE_RTDN) ? SCROLL_NOWHERE:SCROLL_BOTTOM_ARROW;
273 if (!thumbPos) return ((infoPtr->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH) ? SCROLL_NOWHERE:SCROLL_TOP_RECT;
274 pt.y -= rect.top;
275 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
276 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
277 }
278 else /* horizontal */
279 {
280 if (pt.x < rect.left + arrowSize) return (infoPtr->flags & ESB_DISABLE_LTUP) ? SCROLL_NOWHERE:SCROLL_TOP_ARROW;
281 if (pt.x >= rect.right - arrowSize) return (infoPtr->flags & ESB_DISABLE_RTDN) ? SCROLL_NOWHERE:SCROLL_BOTTOM_ARROW;
282 if (!thumbPos) return ((infoPtr->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH) ? SCROLL_NOWHERE:SCROLL_TOP_RECT;
283 pt.x -= rect.left;
284 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
285 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
286 }
287 return SCROLL_THUMB;
288}
289
290static void SCROLL_DrawTopArrow(HDC hdc,SCROLLBAR_INFO *infoPtr,RECT *rect,INT arrowSize,BOOL vertical,BOOL top_pressed)
291{
292 RECT r;
293
294 r = *rect;
295 if( vertical )
296 r.bottom = r.top + arrowSize;
297 else
298 r.right = r.left + arrowSize;
299
300 DrawFrameControl( hdc, &r, DFC_SCROLL,
301 (vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT)
302 | (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
303 | (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) );
304}
305
306static void SCROLL_DrawBottomArrow(HDC hdc,SCROLLBAR_INFO *infoPtr,RECT *rect,INT arrowSize,BOOL vertical,BOOL bottom_pressed)
307{
308 RECT r;
309
310 r = *rect;
311 if( vertical )
312 r.top = r.bottom-arrowSize;
313 else
314 r.left = r.right-arrowSize;
315
316 DrawFrameControl( hdc, &r, DFC_SCROLL,
317 (vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT)
318 | (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
319 | (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) );
320}
321
322/***********************************************************************
323 * SCROLL_DrawArrows
324 *
325 * Draw the scroll bar arrows.
326 */
327static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
328 RECT *rect, INT arrowSize, BOOL vertical,
329 BOOL top_pressed, BOOL bottom_pressed )
330{
331 SCROLL_DrawTopArrow(hdc,infoPtr,rect,arrowSize,vertical,top_pressed);
332 SCROLL_DrawBottomArrow(hdc,infoPtr,rect,arrowSize,vertical,bottom_pressed);
333}
334
335static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
336 RECT *rect, INT arrowSize,
337 INT thumbSize, INT thumbPos,
338 UINT flags, BOOL vertical,
339 BOOL top_selected, BOOL bottom_selected )
340{
341 RECT r;
342 HPEN hSavePen;
343 HBRUSH hSaveBrush,hBrush;
344
345 /* Select the correct brush and pen */
346
347 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
348 * The window-owned scrollbars need to call DEFWND_ControlColor
349 * to correctly setup default scrollbar colors
350 */
351 if (nBar == SB_CTL) {
352 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
353 (WPARAM)hdc,(LPARAM)hwnd);
354 } else {
355 hBrush = (HBRUSH)SendMessageA( hwnd, WM_CTLCOLORSCROLLBAR,
356 (WPARAM)hdc,(LPARAM)hwnd);
357
358 }
359
360 hSavePen = SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
361 hSaveBrush = SelectObject( hdc, hBrush );
362
363 /* Calculate the scroll rectangle */
364
365 r = *rect;
366 if (vertical)
367 {
368 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
369 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
370 }
371 else
372 {
373 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
374 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
375 }
376
377 /* Draw the scroll rectangles and thumb */
378 if (!thumbPos) /* No thumb to draw */
379 {
380 PatBlt( hdc, r.left, r.top,
381 r.right - r.left, r.bottom - r.top,
382 PATCOPY );
383
384 /* cleanup and return */
385 SelectObject( hdc, hSavePen );
386 SelectObject( hdc, hSaveBrush );
387 return;
388 }
389
390 if (vertical)
391 {
392 PatBlt( hdc, r.left, r.top,
393 r.right - r.left,
394 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
395 top_selected ? 0x0f0000 : PATCOPY );
396 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
397 PatBlt( hdc, r.left, r.top + thumbSize,
398 r.right - r.left,
399 r.bottom - r.top - thumbSize,
400 bottom_selected ? 0x0f0000 : PATCOPY );
401 r.bottom = r.top + thumbSize;
402 }
403 else /* horizontal */
404 {
405 PatBlt( hdc, r.left, r.top,
406 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
407 r.bottom - r.top,
408 top_selected ? 0x0f0000 : PATCOPY );
409 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
410 PatBlt( hdc, r.left + thumbSize, r.top,
411 r.right - r.left - thumbSize,
412 r.bottom - r.top,
413 bottom_selected ? 0x0f0000 : PATCOPY );
414 r.right = r.left + thumbSize;
415 }
416
417 /* Draw the thumb */
418
419 DrawEdge(hdc,&r,EDGE_RAISED,BF_RECT | BF_ADJUST);
420 FillRect(hdc,&r,(SCROLL_FocusWin == hwnd && SCROLL_Highlighted && !SCROLL_Scrolling) ? GetSysColorBrush(COLOR_3DSHADOW):GetSysColorBrush(COLOR_BTNFACE));
421
422 /* cleanup */
423 SelectObject( hdc, hSavePen );
424 SelectObject( hdc, hSaveBrush );
425}
426
427/***********************************************************************
428 * SCROLL_DrawMovingThumb
429 *
430 * Draw the moving thumb rectangle.
431 */
432static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
433 INT arrowSize, INT thumbSize )
434{
435 INT pos = SCROLL_TrackingPos;
436 INT max_size;
437
438 if( vertical )
439 max_size = rect->bottom - rect->top;
440 else
441 max_size = rect->right - rect->left;
442
443 max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize;
444
445 if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) )
446 pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP);
447 else if( pos > max_size )
448 pos = max_size;
449
450 SCROLL_DrawInterior( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar,
451 rect, arrowSize, thumbSize, pos,
452 0, vertical, FALSE, FALSE );
453}
454
455/***********************************************************************
456 * SCROLL_ClipPos
457 */
458static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
459{
460 if( pt.x < lpRect->left )
461 pt.x = lpRect->left;
462 else
463 if( pt.x >= lpRect->right )
464 pt.x = lpRect->right-1;
465
466 if( pt.y < lpRect->top )
467 pt.y = lpRect->top;
468 else
469 if( pt.y >= lpRect->bottom )
470 pt.y = lpRect->bottom-1;
471
472 return pt;
473}
474
475/***********************************************************************
476 * SCROLL_GetThumbVal
477 *
478 * Compute the current scroll position based on the thumb position in pixels
479 * from the top of the scroll-bar.
480 */
481static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
482 BOOL vertical, INT pos )
483{
484 INT thumbSize;
485 INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
486
487 if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
488 return infoPtr->MinVal;
489
490 if (infoPtr->Page)
491 {
492 thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
493 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
494 }
495 else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
496
497 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
498
499 pos = MAX( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
500 if (pos > pixels) pos = pixels;
501
502 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
503 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
504 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
505}
506
507void SCROLL_GetSizeBox(HWND hwnd,DWORD dwStyle,PRECT rect)
508{
509 RECT clientRect;
510 INT cx = GetSystemMetrics(SM_CXVSCROLL);
511 INT cy = GetSystemMetrics(SM_CYHSCROLL);
512
513 GetClientRect(hwnd,&clientRect);
514
515 if (dwStyle & SBS_SIZEBOXTOPLEFTALIGN)
516 {
517 rect->left = 0;
518 rect->right = cx;
519 rect->bottom = cy;
520 rect->top = 0;
521 } else
522 {
523 rect->left = clientRect.right-cx;
524 rect->right = clientRect.right;
525 rect->bottom = clientRect.bottom;
526 rect->top = clientRect.bottom-cy;
527 }
528}
529
530void SCROLL_DrawSizeBox(HDC hdc,RECT rect)
531{
532 POINT p1,p2;
533 HPEN penDark = GetSysColorPen(COLOR_3DSHADOW);
534 HPEN penWhite = GetSysColorPen(COLOR_3DHILIGHT);
535 HPEN oldPen = SelectObject(hdc,penDark);
536 INT x;
537
538 p1.x = rect.right-1;
539 p1.y = rect.bottom;
540 p2.x = rect.right;
541 p2.y = rect.bottom-1;
542 for (x = 0;x < 3;x++)
543 {
544 SelectObject(hdc,penDark);
545 MoveToEx(hdc,p1.x,p1.y,NULL);
546 LineTo(hdc,p2.x,p2.y);
547 p1.x--;
548 p2.y--;
549 MoveToEx(hdc,p1.x,p1.y,NULL);
550 LineTo(hdc,p2.x,p2.y);
551 SelectObject(hdc,penWhite);
552 p1.x--;
553 p2.y--;
554 MoveToEx(hdc,p1.x,p1.y,NULL);
555 LineTo(hdc,p2.x,p2.y);
556 p1.x -= 2;
557 p2.y -= 2;
558 }
559
560 SelectObject(hdc,oldPen);
561}
562
563/***********************************************************************
564 * SCROLL_DrawScrollBar
565 *
566 * Redraw the whole scrollbar.
567 */
568void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
569 BOOL arrows, BOOL interior )
570{
571 INT arrowSize, thumbSize, thumbPos;
572 RECT rect;
573 BOOL vertical;
574 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr( hwnd, nBar );
575
576 if (!infoPtr) return;
577 if (nBar == SB_CTL)
578 {
579 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
580
581 if (dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP))
582 {
583 RECT rect;
584 HBRUSH hBrush;
585
586 hdc = GetDC(hwnd);
587 hBrush = GetSysColorBrush(COLOR_3DFACE);
588 GetClientRect(hwnd,&rect);
589 FillRect(hdc,&rect,hBrush);
590
591 if (dwStyle & SBS_SIZEGRIP)
592 {
593 SCROLL_GetSizeBox(hwnd,dwStyle,&rect);
594 SCROLL_DrawSizeBox(hdc,rect);
595 }
596
597 ReleaseDC(hwnd,hdc);
598
599 return;
600 }
601 }
602
603 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
604 &arrowSize, &thumbSize, &thumbPos );
605
606 /* Draw the arrows */
607
608 if (arrows && arrowSize)
609 {
610 if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
611 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
612 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
613 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
614 else
615 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
616 FALSE, FALSE );
617 }
618
619 if (SCROLL_MovingThumb &&
620 (SCROLL_TrackingWin == hwnd) &&
621 (SCROLL_TrackingBar == nBar))
622 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
623 else if( interior )
624 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
625 thumbPos, infoPtr->flags, vertical, SCROLL_trackHitTest == SCROLL_TOP_RECT && SCROLL_lastHitTest == SCROLL_TOP_RECT,SCROLL_trackHitTest == SCROLL_BOTTOM_RECT && SCROLL_lastHitTest == SCROLL_BOTTOM_RECT);
626}
627
628/***********************************************************************
629 * SCROLL_RefreshScrollBar
630 *
631 * Repaint the scroll bar interior after a SetScrollRange() or
632 * SetScrollPos() call.
633 */
634static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
635 BOOL arrows, BOOL interior )
636{
637 Win32BaseWindow *window;
638 HDC hdc;
639
640
641 hdc = GetDC(hwnd);
642
643 if (!hdc) return;
644
645 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
646 ReleaseDC( hwnd, hdc );
647}
648
649/* Message Handler */
650
651LRESULT SCROLL_NCCreate(HWND hwnd,WPARAM wParam,LPARAM lParam)
652{
653 SCROLLBAR_INFO *infoPtr = (SCROLLBAR_INFO*)malloc(sizeof(SCROLLBAR_INFO));
654
655 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
656 infoPtr->MaxVal = 100;
657 infoPtr->flags = ESB_ENABLE_BOTH;
658
659 SetInfoPtr(hwnd,(DWORD)infoPtr);
660
661 return TRUE;
662}
663
664LRESULT SCROLL_Create(HWND hwnd,WPARAM wParam,LPARAM lParam)
665{
666 CREATESTRUCTA *lpCreat = (CREATESTRUCTA *)lParam;
667
668 if (!(lpCreat->style & (SBS_SIZEBOX | SBS_SIZEGRIP)) && (lpCreat->style & (SBS_LEFTALIGN | SBS_RIGHTALIGN)))
669 {
670 if (lpCreat->style & SBS_VERT)
671 {
672 INT w,h;
673
674 w = GetSystemMetrics(SM_CXVSCROLL);
675 h = lpCreat->cy;
676
677 if (lpCreat->style & SBS_LEFTALIGN)
678 MoveWindow(hwnd,lpCreat->x,lpCreat->y,w,h,FALSE);
679 else if (lpCreat->style & SBS_RIGHTALIGN)
680 MoveWindow(hwnd,lpCreat->x+lpCreat->cx-w,lpCreat->y,w,h,FALSE);
681 } else /* SBS_HORZ */
682 {
683 INT w,h;
684
685 w = lpCreat->cx;
686 h = GetSystemMetrics(SM_CYHSCROLL);
687
688 if (lpCreat->style & SBS_TOPALIGN)
689 MoveWindow(hwnd,lpCreat->x,lpCreat->y,w,h,FALSE);
690 else if (lpCreat->style & SBS_BOTTOMALIGN)
691 MoveWindow(hwnd,lpCreat->x,lpCreat->y+lpCreat->cy-h,w,h,FALSE);
692 }
693 }
694
695 return 0;
696}
697
698/***********************************************************************
699 * SCROLL_HandleScrollEvent
700 *
701 * Handle a mouse or timer event for the scrollbar.
702 * 'pt' is the location of the mouse event in client (for SB_CTL) or
703 * windows coordinates.
704 */
705LRESULT SCROLL_HandleScrollEvent(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar,UINT msg)
706{
707 static POINT prevPt; /* Previous mouse position for timer events */
708 static UINT trackThumbPos; /* Thumb position when tracking started. */
709 static BOOL thumbTrackSent;
710 static INT lastClickPos; /* Position in the scroll-bar of the last button-down event. */
711 static INT lastMousePos; /* Position in the scroll-bar of the last mouse event. */
712 static BOOL timerRunning;
713
714 enum SCROLL_HITTEST hittest;
715 HWND hwndOwner, hwndCtl;
716 BOOL vertical;
717 INT arrowSize, thumbSize, thumbPos;
718 RECT rect;
719 HDC hdc;
720 POINT pt;
721 LRESULT res = 0;
722
723 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
724 if (!infoPtr) return res;
725
726 if (nBar == SB_CTL)
727 {
728 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
729
730 if ((dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP)))
731 {
732 if (!(dwStyle & SBS_SIZEGRIP)) return res;
733
734 if (msg == WM_NCHITTEST)
735 {
736 if (dwStyle & SBS_SIZEGRIP)
737 {
738 RECT rect;
739
740 pt.x = (SHORT)LOWORD(lParam);
741 pt.y = (SHORT)HIWORD(lParam);
742 ScreenToClient(hwnd,&pt);
743 SCROLL_GetSizeBox(hwnd,dwStyle,&rect);
744 if (PtInRect(&rect,pt))
745 {
746 if (dwStyle & SBS_SIZEBOXTOPLEFTALIGN)
747 return HTTOPLEFT;
748 else
749 return HTBOTTOMRIGHT;
750 }
751 }
752 return DefWindowProcA(hwnd,WM_NCHITTEST,wParam,lParam);
753 } else if (msg == WM_LBUTTONDOWN)
754 {
755 return DefWindowProcA(hwnd,WM_LBUTTONDOWN,wParam,lParam);
756 }
757
758 return res;
759 }
760 }
761
762 if (msg == WM_NCHITTEST) return DefWindowProcA(hwnd,WM_NCHITTEST,wParam,lParam);
763
764 vertical = SCROLL_GetScrollBarRect(hwnd,nBar,&rect,&arrowSize,&thumbSize,&thumbPos);
765 if (nBar == SB_CTL) hwndOwner = GetParent(hwnd); else
766 {
767 Win32BaseWindow *win32wnd;
768 HWND hwndFrame;
769
770 win32wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
771 if (!win32wnd) return res;
772 hwndFrame = OSLibWinQueryWindow(win32wnd->getOS2WindowHandle(),QWOS_OWNER);
773 win32wnd = Win32BaseWindow::GetWindowFromOS2FrameHandle(hwndFrame);
774 if (!win32wnd) return res;
775 hwndOwner = win32wnd->getWindowHandle();
776 }
777
778 hwndCtl = (nBar == SB_CTL) ? hwnd:0;
779
780 switch (msg)
781 {
782 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
783 pt.x = (SHORT)LOWORD(lParam);
784 pt.y = (SHORT)HIWORD(lParam);
785 SCROLL_trackVertical = vertical;
786 SCROLL_trackHitTest = hittest = SCROLL_HitTest(hwnd,nBar,pt,FALSE);
787 if (SCROLL_trackHitTest == SCROLL_NOWHERE)
788 {
789 MessageBeep(MB_ICONEXCLAMATION);
790
791 return res;
792 }
793 SCROLL_Scrolling = TRUE;
794 timerRunning = FALSE;
795 if ((SCROLL_FocusWin == hwnd) && SCROLL_Highlighted)
796 {
797 hdc = GetDC(hwnd);
798 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
799 ReleaseDC(hwnd,hdc);
800 }
801 lastClickPos = vertical ? pt.y:pt.x;
802 lastMousePos = lastClickPos;
803 trackThumbPos = thumbPos;
804 prevPt = pt;
805 if (nBar == SB_CTL) SetFocus(hwnd);
806 SetCapture(hwnd);
807 break;
808
809 case WM_MOUSEMOVE:
810 if (SCROLL_Scrolling)
811 {
812 pt.x = (SHORT)LOWORD(lParam);
813 pt.y = (SHORT)HIWORD(lParam);
814 hittest = SCROLL_HitTest(hwnd,nBar,pt,TRUE);
815 prevPt = pt;
816 } else return res;
817 break;
818
819 case WM_LBUTTONUP:
820 if (SCROLL_Scrolling)
821 {
822 pt.x = (SHORT)LOWORD(lParam);
823 pt.y = (SHORT)HIWORD(lParam);
824 hittest = SCROLL_NOWHERE;
825 ReleaseCapture();
826 SCROLL_Scrolling = FALSE;
827 } else return res;
828 break;
829
830 case WM_CAPTURECHANGED:
831 if (SCROLL_Scrolling)
832 {
833 hittest = SCROLL_NOWHERE;
834 SCROLL_Scrolling = FALSE;
835 } else return res;
836 break;
837
838 case WM_SETFOCUS:
839 if (nBar == SB_CTL)
840 {
841 SCROLL_FocusWin = hwnd;
842 SCROLL_HasFocus = TRUE;
843 SCROLL_Highlighted = FALSE;
844 SetSystemTimer(hwnd,BLINK_TIMER,SCROLL_BLINK_DELAY,(TIMERPROC)0);
845 }
846 return res;
847
848 case WM_KILLFOCUS:
849 if (SCROLL_FocusWin == hwnd)
850 {
851 SCROLL_FocusWin = 0;
852 SCROLL_HasFocus = FALSE;
853 if (SCROLL_Highlighted)
854 {
855 SCROLL_Highlighted = FALSE;
856 hdc = GetDC(hwnd);
857 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
858 ReleaseDC(hwnd,hdc);
859 }
860 KillSystemTimer(hwnd,BLINK_TIMER);
861 }
862 return res;
863
864 case WM_SYSTIMER:
865 if (wParam == SCROLL_TIMER)
866 {
867 pt = prevPt;
868 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
869 break;
870 } else if (wParam == BLINK_TIMER)
871 {
872 SCROLL_Highlighted = ~SCROLL_Highlighted;
873 if (!SCROLL_Scrolling)
874 {
875 hdc = GetDC(hwnd);
876 SCROLL_DrawScrollBar(hwnd,hdc,nBar,FALSE,TRUE);
877 ReleaseDC(hwnd,hdc);
878 }
879 return res;
880 } else return res;
881
882 default:
883 return res; /* Should never happen */
884 }
885
886 hdc = GetDC(hwnd);
887
888 switch(SCROLL_trackHitTest)
889 {
890 case SCROLL_NOWHERE: /* No tracking in progress */
891 break;
892
893 case SCROLL_TOP_ARROW:
894 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
895 KillSystemTimer(hwnd,SCROLL_TIMER);
896 else if ((msg == WM_LBUTTONDOWN) || (!timerRunning && msg == WM_SYSTIMER))
897 {
898 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
899 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
900 (TIMERPROC)0 );
901 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
902 }
903
904 if ((msg == WM_LBUTTONDOWN) || (SCROLL_lastHitTest != hittest))
905 {
906 SCROLL_DrawTopArrow(hdc,infoPtr,&rect,arrowSize,vertical,(hittest == SCROLL_trackHitTest));
907 SCROLL_lastHitTest = hittest;
908 }
909 if ((hittest == SCROLL_trackHitTest) && ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)))
910 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_LINEUP,hwndCtl);
911
912 break;
913
914 case SCROLL_TOP_RECT:
915 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
916 KillSystemTimer(hwnd,SCROLL_TIMER);
917 else if ((msg == WM_LBUTTONDOWN) || (!timerRunning && (msg == WM_SYSTIMER)))
918 {
919 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
920 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
921 (TIMERPROC)0 );
922 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
923 }
924
925 if ((msg == WM_LBUTTONDOWN) || (SCROLL_lastHitTest != hittest))
926 {
927 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
928 thumbPos, infoPtr->flags, vertical,
929 (hittest == SCROLL_trackHitTest), FALSE );
930 SCROLL_lastHitTest = hittest;
931 }
932
933 if ((hittest == SCROLL_trackHitTest) && ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)))
934 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_PAGEUP,hwndCtl);
935
936 break;
937
938 case SCROLL_THUMB:
939 if (msg == WM_LBUTTONDOWN)
940 {
941 SCROLL_TrackingWin = hwnd;
942 SCROLL_TrackingBar = nBar;
943 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
944 SCROLL_TrackingVal = infoPtr->CurVal;
945 SCROLL_MovingThumb = TRUE;
946 thumbTrackSent = FALSE;
947 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
948 } else if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
949 {
950 UINT val;
951 INT oldPos = infoPtr->CurVal;
952
953 SCROLL_MovingThumb = FALSE;
954 SCROLL_TrackingWin = 0;
955 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
956 val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
957 trackThumbPos + lastMousePos - lastClickPos );
958
959 if ((val != infoPtr->CurVal) || thumbTrackSent)
960 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
961 MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
962
963 if (oldPos == infoPtr->CurVal)
964 {
965 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
966 &arrowSize, &thumbSize, &thumbPos );
967 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
968 thumbPos, infoPtr->flags, vertical,
969 FALSE, FALSE );
970 }
971
972 ReleaseDC(hwnd,hdc);
973 return res;
974 } else if (msg == WM_MOUSEMOVE)
975 {
976 UINT pos;
977
978 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
979 else
980 {
981 pt = SCROLL_ClipPos( &rect, pt );
982 pos = vertical ? pt.y:pt.x;
983 }
984 if (pos != lastMousePos)
985 {
986 lastMousePos = pos;
987 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
988 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
989 vertical,
990 SCROLL_TrackingPos );
991 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
992 arrowSize, thumbSize );
993 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
994 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
995 hwndCtl );
996 thumbTrackSent = TRUE;
997 }
998 }
999 break;
1000
1001 case SCROLL_BOTTOM_RECT:
1002 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
1003 KillSystemTimer(hwnd,SCROLL_TIMER);
1004 else if ((msg == WM_LBUTTONDOWN) || (!timerRunning && (msg == WM_SYSTIMER)))
1005 {
1006 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1007 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1008 (TIMERPROC)0 );
1009 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
1010 }
1011
1012 if ((msg == WM_LBUTTONDOWN) || (SCROLL_lastHitTest != hittest))
1013 {
1014 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
1015 thumbPos, infoPtr->flags, vertical,
1016 FALSE, (hittest == SCROLL_trackHitTest) );
1017 SCROLL_lastHitTest = hittest;
1018 }
1019
1020 if ((hittest == SCROLL_trackHitTest) && ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)))
1021 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_PAGEDOWN,hwndCtl);
1022
1023 break;
1024
1025 case SCROLL_BOTTOM_ARROW:
1026 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
1027 KillSystemTimer(hwnd,SCROLL_TIMER);
1028 else if ((msg == WM_LBUTTONDOWN) || (!timerRunning && (msg == WM_SYSTIMER)))
1029 {
1030 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
1031 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
1032 (TIMERPROC)0 );
1033 if (msg != WM_LBUTTONDOWN) timerRunning = TRUE;
1034 }
1035
1036 if ((msg == WM_LBUTTONDOWN) || (SCROLL_lastHitTest != hittest))
1037 {
1038 SCROLL_DrawBottomArrow(hdc,infoPtr,&rect,arrowSize,vertical,(hittest == SCROLL_trackHitTest));
1039 SCROLL_lastHitTest = hittest;
1040 }
1041 if ((hittest == SCROLL_trackHitTest) && ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)))
1042 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_LINEDOWN,hwndCtl);
1043
1044 break;
1045 }
1046
1047 if ((msg == WM_LBUTTONUP) || (msg == WM_CAPTURECHANGED))
1048 {
1049 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
1050
1051 SendMessageA(hwndOwner,vertical ? WM_VSCROLL:WM_HSCROLL,SB_ENDSCROLL,hwndCtl);
1052 }
1053
1054 ReleaseDC( hwnd, hdc );
1055
1056 return res;
1057}
1058
1059/***********************************************************************
1060 * SCROLL_HandleKbdEvent
1061 *
1062 * Handle a keyboard event (only for SB_CTL scrollbars).
1063 */
1064LRESULT SCROLL_KeyDown(HWND hwnd,WPARAM wParam,LPARAM lParam)
1065{
1066 DWORD dwStyle = GetWindowLongA(hwnd,GWL_STYLE);
1067 UINT msg;
1068
1069 if (dwStyle & (SBS_SIZEBOX | SBS_SIZEGRIP)) return 0;
1070
1071 switch(wParam)
1072 {
1073 case VK_PRIOR: msg = SB_PAGEUP; break;
1074 case VK_NEXT: msg = SB_PAGEDOWN; break;
1075 case VK_HOME: msg = SB_TOP; break;
1076 case VK_END: msg = SB_BOTTOM; break;
1077 case VK_UP: msg = SB_LINEUP; break;
1078 case VK_DOWN: msg = SB_LINEDOWN; break;
1079 default:
1080 return 0;
1081 }
1082 SendMessageA( GetParent(hwnd),
1083 (dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
1084 msg, hwnd );
1085
1086 return 0;
1087}
1088
1089LRESULT SCROLL_Paint(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar)
1090{
1091 PAINTSTRUCT ps;
1092 HDC hdc = wParam ? (HDC)wParam:BeginPaint( hwnd, &ps );
1093
1094 SCROLL_DrawScrollBar( hwnd, hdc, nBar, TRUE, TRUE );
1095 if (!wParam) EndPaint( hwnd, &ps );
1096
1097 return 0;
1098}
1099
1100LRESULT SCROLL_SetRange(HWND hwnd,WPARAM wParam,LPARAM lParam,INT nBar,BOOL redraw)
1101{
1102 SCROLLBAR_INFO *infoPtr = SCROLL_GetInfoPtr(hwnd,nBar);
1103 INT oldPos = infoPtr->CurVal;
1104
1105 SetScrollRange((nBar == SB_CTL) ? hwnd:SCROLL_GetFrameHandle(hwnd),nBar,wParam,lParam,redraw);
1106 return (oldPos != infoPtr->CurVal) ? infoPtr->CurVal:0;
1107}
1108
1109/* Window Procedures */
1110
1111/***********************************************************************
1112 * ScrollBarWndProc
1113 */
1114LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam,
1115 LPARAM lParam )
1116{
1117 switch(message)
1118 {
1119 case WM_NCCREATE:
1120 return SCROLL_NCCreate(hwnd,wParam,lParam);
1121
1122 case WM_CREATE:
1123 return SCROLL_Create(hwnd,wParam,lParam);
1124
1125 case WM_LBUTTONDOWN:
1126 case WM_LBUTTONUP:
1127 case WM_NCHITTEST:
1128 case WM_CAPTURECHANGED:
1129 case WM_MOUSEMOVE:
1130 case WM_SYSTIMER:
1131 case WM_SETFOCUS:
1132 case WM_KILLFOCUS:
1133 return SCROLL_HandleScrollEvent(hwnd,wParam,lParam,SB_CTL,message);
1134
1135 case WM_KEYDOWN:
1136 return SCROLL_KeyDown(hwnd,wParam,lParam);
1137
1138 case WM_ERASEBKGND:
1139 return 1;
1140
1141 case WM_GETDLGCODE:
1142 return DLGC_WANTARROWS; /* Windows returns this value */
1143
1144 case WM_PAINT:
1145 return SCROLL_Paint(hwnd,wParam,lParam,SB_CTL);
1146
1147 case SBM_SETPOS:
1148 return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
1149
1150 case SBM_GETPOS:
1151 return GetScrollPos( hwnd, SB_CTL );
1152
1153 case SBM_SETRANGE:
1154 return SCROLL_SetRange(hwnd,wParam,lParam,SB_CTL,FALSE);
1155
1156 case SBM_GETRANGE:
1157 GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
1158 return 0;
1159
1160 case SBM_ENABLE_ARROWS:
1161 return EnableScrollBar( hwnd, SB_CTL, wParam );
1162
1163 case SBM_SETRANGEREDRAW:
1164 return SCROLL_SetRange(hwnd,wParam,lParam,SB_CTL,TRUE);
1165
1166 case SBM_SETSCROLLINFO:
1167 return SetScrollInfo(hwnd,SB_CTL,(SCROLLINFO*)lParam,wParam);
1168
1169 case SBM_GETSCROLLINFO:
1170 return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
1171
1172 case 0x00e5:
1173 case 0x00e7:
1174 case 0x00e8:
1175 case 0x00eb:
1176 case 0x00ec:
1177 case 0x00ed:
1178 case 0x00ee:
1179 case 0x00ef:
1180 //ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
1181 // message, wParam, lParam );
1182 break;
1183
1184 default:
1185 return DefWindowProcA( hwnd, message, wParam, lParam );
1186 }
1187
1188 return 0;
1189}
1190
1191/* frame handlers */
1192
1193VOID SCROLL_SubclassScrollBars(HWND hwndHorz,HWND hwndVert)
1194{
1195 if (hwndHorz) SetWindowLongA(hwndHorz,GWL_WNDPROC,(ULONG)HorzScrollBarWndProc);
1196 if (hwndVert) SetWindowLongA(hwndVert,GWL_WNDPROC,(ULONG)VertScrollBarWndProc);
1197}
1198
1199LRESULT WINAPI HorzScrollBarWndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam )
1200{
1201 switch (message)
1202 {
1203 case WM_LBUTTONDOWN:
1204 case WM_LBUTTONUP:
1205 case WM_NCHITTEST:
1206 case WM_CAPTURECHANGED:
1207 case WM_MOUSEMOVE:
1208 case WM_SYSTIMER:
1209 case WM_SETFOCUS:
1210 case WM_KILLFOCUS:
1211 return SCROLL_HandleScrollEvent(hwnd,wParam,lParam,SB_HORZ,message);
1212
1213 case WM_ERASEBKGND:
1214 return 1;
1215
1216 case WM_GETDLGCODE:
1217 return DLGC_WANTARROWS; /* Windows returns this value */
1218
1219 case WM_PAINT:
1220 return SCROLL_Paint(hwnd,wParam,lParam,SB_HORZ);
1221
1222 case SBM_SETPOS:
1223 return SetScrollPos(SCROLL_GetFrameHandle(hwnd),SB_HORZ,wParam,(BOOL)lParam);
1224
1225 case SBM_GETPOS:
1226 return GetScrollPos(SCROLL_GetFrameHandle(hwnd),SB_HORZ);
1227
1228 case SBM_SETRANGE:
1229 return SCROLL_SetRange(hwnd,wParam,lParam,SB_HORZ,FALSE);
1230
1231 case SBM_GETRANGE:
1232 GetScrollRange(SCROLL_GetFrameHandle(hwnd),SB_HORZ,(LPINT)wParam,(LPINT)lParam);
1233 return 0;
1234
1235 case SBM_ENABLE_ARROWS:
1236 return EnableScrollBar(SCROLL_GetFrameHandle(hwnd),SB_HORZ,wParam);
1237
1238 case SBM_SETRANGEREDRAW:
1239 return SCROLL_SetRange(hwnd,wParam,lParam,SB_HORZ,TRUE);
1240
1241 case SBM_SETSCROLLINFO:
1242 return SetScrollInfo(SCROLL_GetFrameHandle(hwnd),SB_HORZ,(SCROLLINFO*)lParam,wParam);
1243
1244 case SBM_GETSCROLLINFO:
1245 return GetScrollInfo(SCROLL_GetFrameHandle(hwnd),SB_HORZ,(SCROLLINFO*)lParam);
1246
1247 default:
1248 return DefWindowProcA(hwnd,message,wParam,lParam);
1249 }
1250
1251 return 0;
1252}
1253
1254LRESULT WINAPI VertScrollBarWndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam )
1255{
1256 switch (message)
1257 {
1258 case WM_LBUTTONDOWN:
1259 case WM_LBUTTONUP:
1260 case WM_NCHITTEST:
1261 case WM_CAPTURECHANGED:
1262 case WM_MOUSEMOVE:
1263 case WM_SYSTIMER:
1264 case WM_SETFOCUS:
1265 case WM_KILLFOCUS:
1266 return SCROLL_HandleScrollEvent(hwnd,wParam,lParam,SB_VERT,message);
1267
1268 case WM_ERASEBKGND:
1269 return 1;
1270
1271 case WM_GETDLGCODE:
1272 return DLGC_WANTARROWS; /* Windows returns this value */
1273
1274 case WM_PAINT:
1275 return SCROLL_Paint(hwnd,wParam,lParam,SB_VERT);
1276
1277 case SBM_SETPOS:
1278 return SetScrollPos(SCROLL_GetFrameHandle(hwnd),SB_VERT,wParam,(BOOL)lParam);
1279
1280 case SBM_GETPOS:
1281 return GetScrollPos(SCROLL_GetFrameHandle(hwnd),SB_VERT);
1282
1283 case SBM_SETRANGE:
1284 return SCROLL_SetRange(hwnd,wParam,lParam,SB_VERT,FALSE);
1285
1286 case SBM_GETRANGE:
1287 GetScrollRange(SCROLL_GetFrameHandle(hwnd),SB_VERT,(LPINT)wParam,(LPINT)lParam);
1288 return 0;
1289
1290 case SBM_ENABLE_ARROWS:
1291 return EnableScrollBar(SCROLL_GetFrameHandle(hwnd),SB_VERT,wParam);
1292
1293 case SBM_SETRANGEREDRAW:
1294 return SCROLL_SetRange(hwnd,wParam,lParam,SB_VERT,TRUE);
1295
1296 case SBM_SETSCROLLINFO:
1297 return SetScrollInfo(SCROLL_GetFrameHandle(hwnd),SB_VERT,(SCROLLINFO*)lParam,wParam);
1298
1299 case SBM_GETSCROLLINFO:
1300 return GetScrollInfo(SCROLL_GetFrameHandle(hwnd),SB_VERT,(SCROLLINFO*)lParam);
1301
1302 default:
1303 return DefWindowProcA(hwnd,message,wParam,lParam);
1304 }
1305
1306 return 0;
1307}
1308
1309/* Scrollbar API */
1310
1311/*************************************************************************
1312 * SetScrollInfo (USER32.501)
1313 * SetScrollInfo32 can be used to set the position, upper bound,
1314 * lower bound, and page size of a scrollbar control.
1315 *
1316 * RETURNS
1317 * Scrollbar position
1318 *
1319 * NOTE
1320 * For 100 lines of text to be displayed in a window of 25 lines,
1321 * one would for instance use info->nMin=0, info->nMax=75
1322 * (corresponding to the 76 different positions of the window on
1323 * the text), and info->nPage=25.
1324 */
1325INT WINAPI SetScrollInfo(HWND hwnd,INT nBar,const SCROLLINFO *info,BOOL bRedraw)
1326{
1327 /* Update the scrollbar state and set action flags according to
1328 * what has to be done graphics wise. */
1329
1330 SCROLLBAR_INFO *infoPtr;
1331 UINT new_flags;
1332 INT action = 0;
1333 HWND hwndScroll = SCROLL_GetScrollHandle(hwnd,nBar);
1334
1335 dprintf(("USER32: SetScrollInfo"));
1336
1337 if (!hwndScroll) return 0;
1338 if (!(infoPtr = SCROLL_GetInfoPtr(hwndScroll,nBar))) return 0;
1339 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1340 if ((info->cbSize != sizeof(*info)) &&
1341 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1342
1343 /* Set the page size */
1344 if (info->fMask & SIF_PAGE)
1345 {
1346 if( infoPtr->Page != info->nPage )
1347 {
1348 infoPtr->Page = info->nPage;
1349 action |= SA_SSI_REPAINT_INTERIOR;
1350 }
1351 }
1352
1353 /* Set the scroll pos */
1354 if (info->fMask & SIF_POS)
1355 {
1356 //dsprintf(scroll, " pos=%d", info->nPos );
1357 if( infoPtr->CurVal != info->nPos )
1358 {
1359 infoPtr->CurVal = info->nPos;
1360 action |= SA_SSI_MOVE_THUMB;
1361 }
1362 }
1363
1364 /* Set the scroll range */
1365 if (info->fMask & SIF_RANGE)
1366 {
1367 /* Invalid range -> range is set to (0,0) */
1368 if ((info->nMin > info->nMax) ||
1369 ((UINT)(info->nMax - info->nMin) >= 0x80000000))
1370 {
1371 infoPtr->MinVal = 0;
1372 infoPtr->MaxVal = 0;
1373 }
1374 else
1375 {
1376 if( infoPtr->MinVal != info->nMin ||
1377 infoPtr->MaxVal != info->nMax )
1378 {
1379 action |= SA_SSI_REPAINT_INTERIOR;
1380 infoPtr->MinVal = info->nMin;
1381 infoPtr->MaxVal = info->nMax;
1382 }
1383 }
1384 }
1385
1386 /* Make sure the page size is valid */
1387
1388 if (infoPtr->Page < 0) infoPtr->Page = 0;
1389 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1390 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1391
1392 /* Make sure the pos is inside the range */
1393
1394 if (infoPtr->CurVal < infoPtr->MinVal)
1395 infoPtr->CurVal = infoPtr->MinVal;
1396 else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1397 infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
1398
1399 //TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1400 // infoPtr->Page, infoPtr->CurVal,
1401 // infoPtr->MinVal, infoPtr->MaxVal );
1402
1403 /* Check if the scrollbar should be hidden or disabled */
1404 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1405 {
1406 new_flags = infoPtr->flags;
1407 if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1408 {
1409 /* Hide or disable scroll-bar */
1410 if (info->fMask & SIF_DISABLENOSCROLL)
1411 {
1412 new_flags = ESB_DISABLE_BOTH;
1413 action |= SA_SSI_REFRESH;
1414 } else if (nBar != SB_CTL)
1415 {
1416 action = SA_SSI_HIDE;
1417 infoPtr->flags = 0;
1418 goto done;
1419 }
1420 } else /* Show and enable scroll-bar */
1421 {
1422 new_flags = 0;
1423 if (nBar != SB_CTL) action |= SA_SSI_SHOW;
1424 if (infoPtr->flags) action |= SA_SSI_REFRESH;
1425 }
1426
1427 if (infoPtr->flags != new_flags) /* check arrow flags */
1428 {
1429 infoPtr->flags = new_flags;
1430 action |= SA_SSI_REPAINT_ARROWS;
1431 }
1432 }
1433
1434done:
1435 /* Update scrollbar */
1436
1437 if( action & SA_SSI_HIDE )
1438 ShowScrollBar(hwnd,nBar,FALSE);
1439 else
1440 {
1441 if(action & SA_SSI_SHOW)
1442 ShowScrollBar(hwnd,nBar,TRUE);
1443
1444 if (bRedraw)
1445 {
1446 if (action & SA_SSI_REFRESH)
1447 SCROLL_RefreshScrollBar(hwndScroll,nBar,TRUE,TRUE);
1448 else
1449 {
1450 if (action & (SA_SSI_REPAINT_INTERIOR | SA_SSI_MOVE_THUMB))
1451 SCROLL_RefreshScrollBar(hwndScroll,nBar,FALSE,TRUE);
1452 if (action & SA_SSI_REPAINT_ARROWS)
1453 SCROLL_RefreshScrollBar(hwndScroll,nBar,TRUE,FALSE);
1454 }
1455 }
1456 }
1457
1458 /* Return current position */
1459
1460 return infoPtr->CurVal;
1461}
1462/*************************************************************************
1463 * GetScrollInfo (USER32.284)
1464 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1465 * lower bound, and page size of a scrollbar control.
1466 *
1467 * RETURNS STD
1468 */
1469BOOL WINAPI GetScrollInfo(
1470 HWND hwnd /* [I] Handle of window */ ,
1471 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1472 LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1473{
1474 SCROLLBAR_INFO *infoPtr;
1475 HWND hwndScroll;
1476
1477 dprintf(("USER32: GetScrollInfo"));
1478
1479 hwndScroll = SCROLL_GetScrollHandle(hwnd,nBar);
1480 if (!hwndScroll || !(infoPtr = SCROLL_GetInfoPtr(hwndScroll,nBar))) return FALSE;
1481 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1482 if ((info->cbSize != sizeof(*info)) &&
1483 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1484
1485 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1486 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1487 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1488 info->nTrackPos = (SCROLL_MovingThumb && SCROLL_TrackingWin == hwndScroll && SCROLL_TrackingBar == nBar) ? SCROLL_TrackingVal:infoPtr->CurVal;
1489
1490 if (info->fMask & SIF_RANGE)
1491 {
1492 info->nMin = infoPtr->MinVal;
1493 info->nMax = infoPtr->MaxVal;
1494 }
1495 return (info->fMask & SIF_ALL) != 0;
1496}
1497/*************************************************************************
1498 * SetScrollPos (USER32.502)
1499 *
1500 * RETURNS
1501 * Success: Scrollbar position
1502 * Failure: 0
1503 *
1504 * REMARKS
1505 * Note the ambiguity when 0 is returned. Use GetLastError
1506 * to make sure there was an error (and to know which one).
1507 */
1508INT WINAPI SetScrollPos(
1509 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1510 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1511 INT nPos /* [I] New value */,
1512 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
1513{
1514 SCROLLINFO info;
1515 SCROLLBAR_INFO *infoPtr;
1516 INT oldPos;
1517
1518 dprintf(("SetScrollPos %x %d %d %d", hwnd, nBar, nPos, bRedraw));
1519 if (!(infoPtr = SCROLL_GetInfoPtr(SCROLL_GetScrollHandle(hwnd,nBar),nBar))) return 0;
1520 oldPos = infoPtr->CurVal;
1521 info.cbSize = sizeof(info);
1522 info.nPos = nPos;
1523 info.fMask = SIF_POS;
1524 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1525 return oldPos;
1526}
1527/*************************************************************************
1528 * GetScrollPos (USER32.285)
1529 *
1530 * RETURNS
1531 * Success: Current position
1532 * Failure: 0
1533 *
1534 * REMARKS
1535 * Note the ambiguity when 0 is returned. Use GetLastError
1536 * to make sure there was an error (and to know which one).
1537 */
1538INT WINAPI GetScrollPos(
1539 HWND hwnd, /* [I] Handle of window */
1540 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1541{
1542 SCROLLBAR_INFO *infoPtr;
1543
1544 dprintf(("GetScrollPos %x %d", hwnd, nBar));
1545
1546 infoPtr = SCROLL_GetInfoPtr(SCROLL_GetScrollHandle(hwnd,nBar),nBar);
1547 if (!infoPtr) return 0;
1548
1549 return infoPtr->CurVal;
1550}
1551
1552/*************************************************************************
1553 * SetScrollRange (USER32.503)
1554 *
1555 * RETURNS STD
1556 */
1557BOOL WINAPI SetScrollRange(
1558 HWND hwnd, /* [I] Handle of window whose scrollbar will be affected */
1559 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1560 INT MinVal, /* [I] New minimum value */
1561 INT MaxVal, /* [I] New maximum value */
1562 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1563{
1564 SCROLLINFO info;
1565
1566 dprintf(("SetScrollRange %x %x %d %d %d", hwnd, nBar, MinVal, MaxVal, bRedraw));
1567 info.cbSize = sizeof(info);
1568 info.nMin = MinVal;
1569 info.nMax = MaxVal;
1570 info.fMask = SIF_RANGE;
1571 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1572 return TRUE;
1573}
1574
1575/*************************************************************************
1576 * GetScrollRange (USER32.286)
1577 *
1578 * RETURNS STD
1579 */
1580BOOL WINAPI GetScrollRange(
1581 HWND hwnd, /* [I] Handle of window */
1582 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1583 LPINT lpMin, /* [O] Where to store minimum value */
1584 LPINT lpMax /* [O] Where to store maximum value */)
1585{
1586 SCROLLBAR_INFO *infoPtr;
1587
1588 infoPtr = SCROLL_GetInfoPtr(SCROLL_GetScrollHandle(hwnd,nBar),nBar);
1589 if (!infoPtr)
1590 {
1591 if (lpMin) lpMin = 0;
1592 if (lpMax) lpMax = 0;
1593 return FALSE;
1594 }
1595 if (lpMin) *lpMin = infoPtr->MinVal;
1596 if (lpMax) *lpMax = infoPtr->MaxVal;
1597 return TRUE;
1598}
1599
1600/*************************************************************************
1601 * ShowScrollBar (USER32.532)
1602 *
1603 * RETURNS STD
1604 */
1605BOOL WINAPI ShowScrollBar(
1606 HWND hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
1607 INT nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1608 BOOL fShow /* [I] TRUE = show, FALSE = hide */)
1609{
1610 dprintf(("ShowScrollBar %04x %d %d\n", hwnd, nBar, fShow));
1611
1612 if (nBar == SB_CTL)
1613 {
1614 ShowWindow(hwnd,fShow ? SW_SHOW:SW_HIDE);
1615
1616 return TRUE;
1617 } else
1618 {
1619 Win32BaseWindow *window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1620 BOOL createHorz = FALSE,createVert = FALSE;
1621
1622 if (!window)
1623 {
1624 dprintf(("ShowScrollBar window not found!"));
1625 SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1626 return FALSE;
1627 }
1628
1629 return window->showScrollBars(nBar == SB_HORZ || nBar == SB_BOTH,nBar == SB_VERT || nBar == SB_BOTH,fShow);
1630 }
1631
1632 return TRUE;
1633}
1634
1635/*************************************************************************
1636 * EnableScrollBar (USER32.171)
1637 */
1638BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags)
1639{
1640 Win32BaseWindow *window;
1641 SCROLLBAR_INFO *infoPtr;
1642
1643 dprintf(("EnableScrollBar %04x %d %d\n", hwnd, nBar, flags));
1644
1645 if (nBar == SB_CTL)
1646 {
1647 if (!(infoPtr = SCROLL_GetInfoPtr(hwnd,nBar))) return FALSE;
1648
1649 if (infoPtr->flags != flags)
1650 {
1651 infoPtr->flags = flags;
1652 SCROLL_RefreshScrollBar(hwnd,nBar,TRUE,TRUE);
1653 }
1654
1655 return TRUE;
1656 } else
1657 {
1658 Win32BaseWindow *window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1659
1660 if(!window)
1661 {
1662 dprintf(("EnableScrollBar window not found!"));
1663 SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1664 return FALSE;
1665 }
1666
1667 if(window->getStyle() & (WS_HSCROLL | WS_VSCROLL))
1668 {
1669 BOOL rc = FALSE;
1670
1671 if (((nBar == SB_VERT) || (nBar == SB_BOTH)) && (window->getStyle() & WS_VSCROLL))
1672 {
1673 HWND hwndScroll = Win32BaseWindow::OS2ToWin32Handle(window->getVertScrollHandle());
1674
1675 infoPtr = SCROLL_GetInfoPtr(hwndScroll,SB_VERT);
1676 if (infoPtr)
1677 {
1678 if (infoPtr->flags != flags)
1679 {
1680 infoPtr->flags = flags;
1681 SCROLL_RefreshScrollBar(hwndScroll,nBar,TRUE,TRUE);
1682 }
1683
1684 rc = TRUE;
1685 }
1686 }
1687 if (((nBar == SB_HORZ) || (rc && (nBar == SB_BOTH))) && (window->getStyle() & WS_HSCROLL))
1688 {
1689 HWND hwndScroll = Win32BaseWindow::OS2ToWin32Handle(window->getHorzScrollHandle());
1690
1691 infoPtr = SCROLL_GetInfoPtr(hwndScroll,SB_VERT);
1692 if (infoPtr)
1693 {
1694 if (infoPtr->flags != flags)
1695 {
1696 infoPtr->flags = flags;
1697 SCROLL_RefreshScrollBar(hwndScroll,nBar,TRUE,TRUE);
1698 }
1699
1700 rc = TRUE;
1701 }
1702 }
1703
1704 return rc;
1705 }
1706 }
1707
1708 return TRUE;
1709}
1710
1711//CB: not listed in user32.exp -> don't know the id!
1712
1713BOOL WINAPI GetScrollBarInfo(HWND hwnd,LONG idObject,PSCROLLBARINFO psbi)
1714{
1715 if (!psbi || (psbi->cbSize != sizeof(SCROLLBARINFO)))
1716 {
1717 SetLastError(ERROR_INVALID_PARAMETER);
1718
1719 return FALSE;
1720 }
1721
1722 HWND hwndScroll;
1723 INT nBar,arrowSize;
1724
1725 switch (idObject)
1726 {
1727 case OBJID_CLIENT:
1728 nBar = SB_CTL;
1729 hwndScroll = hwnd;
1730 break;
1731
1732 case OBJID_HSCROLL:
1733 nBar = SB_HORZ;
1734 hwndScroll = SCROLL_GetScrollHandle(hwnd,SB_HORZ);
1735 break;
1736
1737 case OBJID_VSCROLL:
1738 nBar = SB_VERT;
1739 hwndScroll = SCROLL_GetScrollHandle(hwnd,SB_VERT);
1740 break;
1741
1742 default:
1743 return FALSE;
1744 }
1745
1746 if (!hwndScroll) return FALSE;
1747
1748 SCROLL_GetScrollBarRect(hwndScroll,nBar,&psbi->rcScrollBar,&arrowSize,&psbi->dxyLineButton,&psbi->xyThumbTop);
1749 psbi->xyThumbBottom = psbi->xyThumbTop+psbi->dxyLineButton;
1750 psbi->bogus = 0; //CB: undocumented!
1751 psbi->rgstate[0] = IsWindowVisible(hwndScroll) ? STATE_SYSTEM_INVISIBLE:0;
1752 psbi->rgstate[1] = psbi->rgstate[2] = psbi->rgstate[3] = psbi->rgstate[4] = psbi->rgstate[5] = psbi->rgstate[0]; //CB: todo
1753
1754 return TRUE;
1755}
1756//******************************************************************************
1757//******************************************************************************
1758BOOL SCROLLBAR_Register()
1759{
1760 WNDCLASSA wndClass;
1761
1762//SvL: Don't check this now
1763// if (GlobalFindAtomA(SCROLLBARCLASSNAME)) return FALSE;
1764
1765 ZeroMemory(&wndClass,sizeof(WNDCLASSA));
1766 wndClass.style = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW | CS_PARENTDC;
1767 wndClass.lpfnWndProc = (WNDPROC)ScrollBarWndProc;
1768 wndClass.cbClsExtra = 0;
1769 wndClass.cbWndExtra = sizeof(SCROLLBAR_INFO);
1770 wndClass.hCursor = LoadCursorA(0,IDC_ARROWA);
1771 wndClass.hbrBackground = (HBRUSH)0;
1772 wndClass.lpszClassName = SCROLLBARCLASSNAME;
1773
1774 return RegisterClassA(&wndClass);
1775}
1776//******************************************************************************
1777//******************************************************************************
1778BOOL SCROLLBAR_Unregister()
1779{
1780 if (GlobalFindAtomA(SCROLLBARCLASSNAME))
1781 return UnregisterClassA(SCROLLBARCLASSNAME,(HINSTANCE)NULL);
1782 else return FALSE;
1783}
1784//******************************************************************************
1785//******************************************************************************
1786
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