4 * Copyright 1993 Martin Ayotte
5 * Copyright 1994, 1996 Alexandre Julliard
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 * This code was audited for completeness against the documented features
24 * of Comctl32.dll version 6.0 on Oct. 8, 2004, by Dimitrie O. Paun.
26 * Unless otherwise noted, we believe this code to be complete, as per
27 * the specification mentioned above.
28 * If you discover missing features, or bugs, please note them below.
36 #include "wine/winuser16.h"
39 #include "wine/debug.h"
40 #include "user_private.h"
42 WINE_DEFAULT_DEBUG_CHANNEL(scroll
);
46 INT curVal
; /* Current scroll-bar value */
47 INT minVal
; /* Minimum scroll-bar value */
48 INT maxVal
; /* Maximum scroll-bar value */
49 INT page
; /* Page size of scroll bar (Win32) */
50 UINT flags
; /* EnableScrollBar flags */
51 } SCROLLBAR_INFO
, *LPSCROLLBAR_INFO
;
54 /* Minimum size of the rectangle between the arrows */
55 #define SCROLL_MIN_RECT 4
57 /* Minimum size of the thumb in pixels */
58 #define SCROLL_MIN_THUMB 6
60 /* Overlap between arrows and thumb */
61 #define SCROLL_ARROW_THUMB_OVERLAP 0
63 /* Delay (in ms) before first repetition when holding the button down */
64 #define SCROLL_FIRST_DELAY 200
66 /* Delay (in ms) between scroll repetitions */
67 #define SCROLL_REPEAT_DELAY 50
70 #define SCROLL_TIMER 0
72 /* Scroll-bar hit testing */
75 SCROLL_NOWHERE
, /* Outside the scroll bar */
76 SCROLL_TOP_ARROW
, /* Top or left arrow */
77 SCROLL_TOP_RECT
, /* Rectangle between the top arrow and the thumb */
78 SCROLL_THUMB
, /* Thumb rectangle */
79 SCROLL_BOTTOM_RECT
, /* Rectangle between the thumb and the bottom arrow */
80 SCROLL_BOTTOM_ARROW
/* Bottom or right arrow */
83 /* What to do after SCROLL_SetScrollInfo() */
84 #define SA_SSI_HIDE 0x0001
85 #define SA_SSI_SHOW 0x0002
86 #define SA_SSI_REFRESH 0x0004
87 #define SA_SSI_REPAINT_ARROWS 0x0008
89 /* Thumb-tracking info */
90 static HWND SCROLL_TrackingWin
= 0;
91 static INT SCROLL_TrackingBar
= 0;
92 static INT SCROLL_TrackingPos
= 0;
93 static INT SCROLL_TrackingVal
= 0;
94 /* Hit test code of the last button-down event */
95 static enum SCROLL_HITTEST SCROLL_trackHitTest
;
96 static BOOL SCROLL_trackVertical
;
98 /* Is the moving thumb being displayed? */
99 static BOOL SCROLL_MovingThumb
= FALSE
;
101 /* Local functions */
102 static BOOL
SCROLL_ShowScrollBar( HWND hwnd
, INT nBar
,
103 BOOL fShowH
, BOOL fShowV
);
104 static INT
SCROLL_SetScrollInfo( HWND hwnd
, INT nBar
,
105 const SCROLLINFO
*info
, BOOL bRedraw
);
106 static void SCROLL_DrawInterior_9x( HWND hwnd
, HDC hdc
, INT nBar
,
107 RECT
*rect
, INT arrowSize
,
108 INT thumbSize
, INT thumbPos
,
109 UINT flags
, BOOL vertical
,
110 BOOL top_selected
, BOOL bottom_selected
);
111 static LRESULT WINAPI
ScrollBarWndProc( HWND hwnd
, UINT uMsg
, WPARAM wParam
, LPARAM lParam
);
114 /*********************************************************************
115 * scrollbar class descriptor
117 static const WCHAR scrollbarW
[] = {'S','c','r','o','l','l','B','a','r',0};
118 const struct builtin_class_descr SCROLL_builtin_class
=
120 scrollbarW
, /* name */
121 CS_DBLCLKS
| CS_VREDRAW
| CS_HREDRAW
| CS_PARENTDC
, /* style */
122 NULL
, /* procA (winproc is Unicode only) */
123 ScrollBarWndProc
, /* procW */
124 sizeof(SCROLLBAR_INFO
), /* extra */
125 IDC_ARROW
, /* cursor */
129 /***********************************************************************
130 * SCROLL_ScrollInfoValid
132 * Determine if the supplied SCROLLINFO struct is valid.
133 * info [in] The SCROLLINFO struct to be tested
135 static inline BOOL
SCROLL_ScrollInfoValid( LPCSCROLLINFO info
)
137 return !(info
->fMask
& ~(SIF_ALL
| SIF_DISABLENOSCROLL
)
138 || (info
->cbSize
!= sizeof(*info
)
139 && info
->cbSize
!= sizeof(*info
) - sizeof(info
->nTrackPos
)));
143 /***********************************************************************
144 * SCROLL_GetInternalInfo
146 * Returns pointer to internal SCROLLBAR_INFO structure for nBar
147 * or NULL if failed (f.i. scroll bar does not exist yet)
148 * If alloc is TRUE and the struct does not exist yet, create it.
150 static SCROLLBAR_INFO
*SCROLL_GetInternalInfo( HWND hwnd
, INT nBar
, BOOL alloc
)
152 SCROLLBAR_INFO
*infoPtr
= NULL
;
153 WND
*wndPtr
= WIN_GetPtr( hwnd
);
155 if (!wndPtr
|| wndPtr
== WND_OTHER_PROCESS
|| wndPtr
== WND_DESKTOP
) return NULL
;
158 case SB_HORZ
: infoPtr
= (SCROLLBAR_INFO
*)wndPtr
->pHScroll
; break;
159 case SB_VERT
: infoPtr
= (SCROLLBAR_INFO
*)wndPtr
->pVScroll
; break;
160 case SB_CTL
: infoPtr
= (SCROLLBAR_INFO
*)wndPtr
->wExtra
; break;
161 case SB_BOTH
: WARN("with SB_BOTH\n"); break;
164 if (!infoPtr
&& alloc
)
166 if (nBar
!= SB_HORZ
&& nBar
!= SB_VERT
)
167 WARN("Cannot initialize nBar=%d\n",nBar
);
168 else if ((infoPtr
= HeapAlloc( GetProcessHeap(), 0, sizeof(SCROLLBAR_INFO
) )))
170 /* Set default values */
171 infoPtr
->minVal
= infoPtr
->curVal
= infoPtr
->page
= 0;
172 /* From MSDN: max for a standard scroll bar is 100 by default. */
173 infoPtr
->maxVal
= 100;
174 /* Scroll bar is enabled by default after create */
175 infoPtr
->flags
= ESB_ENABLE_BOTH
;
176 if (nBar
== SB_HORZ
) wndPtr
->pHScroll
= infoPtr
;
177 else wndPtr
->pVScroll
= infoPtr
;
180 WIN_ReleasePtr( wndPtr
);
185 /***********************************************************************
186 * SCROLL_GetScrollBarRect
188 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
189 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
190 * 'arrowSize' returns the width or height of an arrow (depending on
191 * the orientation of the scrollbar), 'thumbSize' returns the size of
192 * the thumb, and 'thumbPos' returns the position of the thumb
193 * relative to the left or to the top.
194 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
196 static BOOL
SCROLL_GetScrollBarRect( HWND hwnd
, INT nBar
, RECT
*lprect
,
197 INT
*arrowSize
, INT
*thumbSize
,
202 WND
*wndPtr
= WIN_GetPtr( hwnd
);
204 if (!wndPtr
|| wndPtr
== WND_OTHER_PROCESS
|| wndPtr
== WND_DESKTOP
) return FALSE
;
209 lprect
->left
= wndPtr
->rectClient
.left
- wndPtr
->rectWindow
.left
;
210 lprect
->top
= wndPtr
->rectClient
.bottom
- wndPtr
->rectWindow
.top
;
211 lprect
->right
= wndPtr
->rectClient
.right
- wndPtr
->rectWindow
.left
;
212 lprect
->bottom
= lprect
->top
+ GetSystemMetrics(SM_CYHSCROLL
);
213 if(wndPtr
->dwStyle
& WS_BORDER
) {
216 } else if(wndPtr
->dwStyle
& WS_VSCROLL
)
222 if((wndPtr
->dwExStyle
& WS_EX_LEFTSCROLLBAR
) != 0)
223 lprect
->left
= wndPtr
->rectClient
.left
- wndPtr
->rectWindow
.left
- GetSystemMetrics(SM_CXVSCROLL
);
225 lprect
->left
= wndPtr
->rectClient
.right
- wndPtr
->rectWindow
.left
;
226 lprect
->top
= wndPtr
->rectClient
.top
- wndPtr
->rectWindow
.top
;
227 lprect
->right
= lprect
->left
+ GetSystemMetrics(SM_CXVSCROLL
);
228 lprect
->bottom
= wndPtr
->rectClient
.bottom
- wndPtr
->rectWindow
.top
;
229 if(wndPtr
->dwStyle
& WS_BORDER
) {
232 } else if(wndPtr
->dwStyle
& WS_HSCROLL
)
238 GetClientRect( hwnd
, lprect
);
239 vertical
= ((wndPtr
->dwStyle
& SBS_VERT
) != 0);
243 WIN_ReleasePtr( wndPtr
);
247 if (vertical
) pixels
= lprect
->bottom
- lprect
->top
;
248 else pixels
= lprect
->right
- lprect
->left
;
250 if (pixels
<= 2*GetSystemMetrics(SM_CXVSCROLL
) + SCROLL_MIN_RECT
)
252 if (pixels
> SCROLL_MIN_RECT
)
253 *arrowSize
= (pixels
- SCROLL_MIN_RECT
) / 2;
256 *thumbPos
= *thumbSize
= 0;
260 SCROLLBAR_INFO
*info
= SCROLL_GetInternalInfo( hwnd
, nBar
, FALSE
);
263 WARN("called for missing scroll bar\n");
264 WIN_ReleasePtr( wndPtr
);
267 *arrowSize
= GetSystemMetrics(SM_CXVSCROLL
);
268 pixels
-= (2 * (GetSystemMetrics(SM_CXVSCROLL
) - SCROLL_ARROW_THUMB_OVERLAP
));
272 *thumbSize
= MulDiv(pixels
,info
->page
,(info
->maxVal
-info
->minVal
+1));
273 if (*thumbSize
< SCROLL_MIN_THUMB
) *thumbSize
= SCROLL_MIN_THUMB
;
275 else *thumbSize
= GetSystemMetrics(SM_CXVSCROLL
);
277 if (((pixels
-= *thumbSize
) < 0) ||
278 ((info
->flags
& ESB_DISABLE_BOTH
) == ESB_DISABLE_BOTH
))
280 /* Rectangle too small or scrollbar disabled -> no thumb */
281 *thumbPos
= *thumbSize
= 0;
285 INT max
= info
->maxVal
- max( info
->page
-1, 0 );
286 if (info
->minVal
>= max
)
287 *thumbPos
= *arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
289 *thumbPos
= *arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
290 + MulDiv(pixels
, (info
->curVal
-info
->minVal
),(max
- info
->minVal
));
293 WIN_ReleasePtr( wndPtr
);
298 /***********************************************************************
301 * Compute the current scroll position based on the thumb position in pixels
302 * from the top of the scroll-bar.
304 static UINT
SCROLL_GetThumbVal( SCROLLBAR_INFO
*infoPtr
, RECT
*rect
,
305 BOOL vertical
, INT pos
)
308 INT pixels
= vertical
? rect
->bottom
-rect
->top
: rect
->right
-rect
->left
;
310 if ((pixels
-= 2*(GetSystemMetrics(SM_CXVSCROLL
) - SCROLL_ARROW_THUMB_OVERLAP
)) <= 0)
311 return infoPtr
->minVal
;
315 thumbSize
= MulDiv(pixels
,infoPtr
->page
,(infoPtr
->maxVal
-infoPtr
->minVal
+1));
316 if (thumbSize
< SCROLL_MIN_THUMB
) thumbSize
= SCROLL_MIN_THUMB
;
318 else thumbSize
= GetSystemMetrics(SM_CXVSCROLL
);
320 if ((pixels
-= thumbSize
) <= 0) return infoPtr
->minVal
;
322 pos
= max( 0, pos
- (GetSystemMetrics(SM_CXVSCROLL
) - SCROLL_ARROW_THUMB_OVERLAP
) );
323 if (pos
> pixels
) pos
= pixels
;
325 if (!infoPtr
->page
) pos
*= infoPtr
->maxVal
- infoPtr
->minVal
;
326 else pos
*= infoPtr
->maxVal
- infoPtr
->minVal
- infoPtr
->page
+ 1;
327 return infoPtr
->minVal
+ ((pos
+ pixels
/ 2) / pixels
);
330 /***********************************************************************
333 static BOOL
SCROLL_PtInRectEx( LPRECT lpRect
, POINT pt
, BOOL vertical
)
339 rect
.left
-= lpRect
->right
- lpRect
->left
;
340 rect
.right
+= lpRect
->right
- lpRect
->left
;
344 rect
.top
-= lpRect
->bottom
- lpRect
->top
;
345 rect
.bottom
+= lpRect
->bottom
- lpRect
->top
;
347 return PtInRect( &rect
, pt
);
350 /***********************************************************************
353 static POINT
SCROLL_ClipPos( LPRECT lpRect
, POINT pt
)
355 if( pt
.x
< lpRect
->left
)
358 if( pt
.x
> lpRect
->right
)
359 pt
.x
= lpRect
->right
;
361 if( pt
.y
< lpRect
->top
)
364 if( pt
.y
> lpRect
->bottom
)
365 pt
.y
= lpRect
->bottom
;
371 /***********************************************************************
374 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
376 static enum SCROLL_HITTEST
SCROLL_HitTest( HWND hwnd
, INT nBar
,
377 POINT pt
, BOOL bDragging
)
379 INT arrowSize
, thumbSize
, thumbPos
;
382 BOOL vertical
= SCROLL_GetScrollBarRect( hwnd
, nBar
, &rect
,
383 &arrowSize
, &thumbSize
, &thumbPos
);
385 if ( (bDragging
&& !SCROLL_PtInRectEx( &rect
, pt
, vertical
)) ||
386 (!PtInRect( &rect
, pt
)) ) return SCROLL_NOWHERE
;
390 if (pt
.y
< rect
.top
+ arrowSize
) return SCROLL_TOP_ARROW
;
391 if (pt
.y
>= rect
.bottom
- arrowSize
) return SCROLL_BOTTOM_ARROW
;
392 if (!thumbPos
) return SCROLL_TOP_RECT
;
394 if (pt
.y
< thumbPos
) return SCROLL_TOP_RECT
;
395 if (pt
.y
>= thumbPos
+ thumbSize
) return SCROLL_BOTTOM_RECT
;
397 else /* horizontal */
399 if (pt
.x
< rect
.left
+ arrowSize
) return SCROLL_TOP_ARROW
;
400 if (pt
.x
>= rect
.right
- arrowSize
) return SCROLL_BOTTOM_ARROW
;
401 if (!thumbPos
) return SCROLL_TOP_RECT
;
403 if (pt
.x
< thumbPos
) return SCROLL_TOP_RECT
;
404 if (pt
.x
>= thumbPos
+ thumbSize
) return SCROLL_BOTTOM_RECT
;
410 /***********************************************************************
413 * Draw the scroll bar arrows.
415 static void SCROLL_DrawArrows( HDC hdc
, SCROLLBAR_INFO
*infoPtr
,
416 RECT
*rect
, INT arrowSize
, BOOL vertical
,
417 BOOL top_pressed
, BOOL bottom_pressed
)
423 r
.bottom
= r
.top
+ arrowSize
;
425 r
.right
= r
.left
+ arrowSize
;
427 DrawFrameControl( hdc
, &r
, DFC_SCROLL
,
428 (vertical
? DFCS_SCROLLUP
: DFCS_SCROLLLEFT
)
429 | (top_pressed
? (DFCS_PUSHED
| DFCS_FLAT
) : 0 )
430 | (infoPtr
->flags
&ESB_DISABLE_LTUP
? DFCS_INACTIVE
: 0 ) );
434 r
.top
= r
.bottom
-arrowSize
;
436 r
.left
= r
.right
-arrowSize
;
438 DrawFrameControl( hdc
, &r
, DFC_SCROLL
,
439 (vertical
? DFCS_SCROLLDOWN
: DFCS_SCROLLRIGHT
)
440 | (bottom_pressed
? (DFCS_PUSHED
| DFCS_FLAT
) : 0 )
441 | (infoPtr
->flags
&ESB_DISABLE_RTDN
? DFCS_INACTIVE
: 0) );
444 static void SCROLL_DrawMovingThumb( HDC hdc
, RECT
*rect
, BOOL vertical
,
445 INT arrowSize
, INT thumbSize
)
447 INT pos
= SCROLL_TrackingPos
;
451 max_size
= rect
->bottom
- rect
->top
;
453 max_size
= rect
->right
- rect
->left
;
455 max_size
-= (arrowSize
-SCROLL_ARROW_THUMB_OVERLAP
) + thumbSize
;
457 if( pos
< (arrowSize
-SCROLL_ARROW_THUMB_OVERLAP
) )
458 pos
= (arrowSize
-SCROLL_ARROW_THUMB_OVERLAP
);
459 else if( pos
> max_size
)
462 SCROLL_DrawInterior_9x( SCROLL_TrackingWin
, hdc
, SCROLL_TrackingBar
,
463 rect
, arrowSize
, thumbSize
, pos
,
464 0, vertical
, FALSE
, FALSE
);
466 SCROLL_MovingThumb
= !SCROLL_MovingThumb
;
469 /***********************************************************************
470 * SCROLL_DrawInterior
472 * Draw the scroll bar interior (everything except the arrows).
474 static void SCROLL_DrawInterior_9x( HWND hwnd
, HDC hdc
, INT nBar
,
475 RECT
*rect
, INT arrowSize
,
476 INT thumbSize
, INT thumbPos
,
477 UINT flags
, BOOL vertical
,
478 BOOL top_selected
, BOOL bottom_selected
)
482 HBRUSH hSaveBrush
,hBrush
;
484 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
485 * The window-owned scrollbars need to call DEFWND_ControlColor
486 * to correctly setup default scrollbar colors
490 hBrush
= (HBRUSH
)SendMessageW( GetParent(hwnd
), WM_CTLCOLORSCROLLBAR
,
491 (WPARAM
)hdc
,(LPARAM
)hwnd
);
495 hBrush
= DEFWND_ControlColor( hdc
, CTLCOLOR_SCROLLBAR
);
498 hSavePen
= SelectObject( hdc
, SYSCOLOR_GetPen(COLOR_WINDOWFRAME
) );
499 hSaveBrush
= SelectObject( hdc
, hBrush
);
501 /* Calculate the scroll rectangle */
505 r
.top
+= arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
506 r
.bottom
-= (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
510 r
.left
+= arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
511 r
.right
-= (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
514 /* Draw the scroll rectangles and thumb */
515 if (!thumbPos
) /* No thumb to draw */
517 PatBlt( hdc
, r
.left
, r
.top
,
518 r
.right
- r
.left
, r
.bottom
- r
.top
,
521 /* cleanup and return */
522 SelectObject( hdc
, hSavePen
);
523 SelectObject( hdc
, hSaveBrush
);
529 PatBlt( hdc
, r
.left
, r
.top
,
531 thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
),
532 top_selected
? 0x0f0000 : PATCOPY
);
533 r
.top
+= thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
534 PatBlt( hdc
, r
.left
, r
.top
+ thumbSize
,
536 r
.bottom
- r
.top
- thumbSize
,
537 bottom_selected
? 0x0f0000 : PATCOPY
);
538 r
.bottom
= r
.top
+ thumbSize
;
540 else /* horizontal */
542 PatBlt( hdc
, r
.left
, r
.top
,
543 thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
),
545 top_selected
? 0x0f0000 : PATCOPY
);
546 r
.left
+= thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
547 PatBlt( hdc
, r
.left
+ thumbSize
, r
.top
,
548 r
.right
- r
.left
- thumbSize
,
550 bottom_selected
? 0x0f0000 : PATCOPY
);
551 r
.right
= r
.left
+ thumbSize
;
555 DrawEdge( hdc
, &r
, EDGE_RAISED
, BF_RECT
| BF_MIDDLE
);
558 SelectObject( hdc
, hSavePen
);
559 SelectObject( hdc
, hSaveBrush
);
563 static void SCROLL_DrawInterior( HWND hwnd
, HDC hdc
, INT nBar
,
564 RECT
*rect
, INT arrowSize
,
565 INT thumbSize
, INT thumbPos
,
566 UINT flags
, BOOL vertical
,
567 BOOL top_selected
, BOOL bottom_selected
)
571 HBRUSH hSaveBrush
,hBrush
;
572 BOOL Save_SCROLL_MovingThumb
= SCROLL_MovingThumb
;
574 if (Save_SCROLL_MovingThumb
&&
575 (SCROLL_TrackingWin
== hwnd
) &&
576 (SCROLL_TrackingBar
== nBar
))
577 SCROLL_DrawMovingThumb( hdc
, rect
, vertical
, arrowSize
, thumbSize
);
579 /* Select the correct brush and pen */
581 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
582 * The window-owned scrollbars need to call DEFWND_ControlColor
583 * to correctly setup default scrollbar colors
585 if (nBar
== SB_CTL
) {
586 hBrush
= (HBRUSH
)SendMessageW( GetParent(hwnd
), WM_CTLCOLORSCROLLBAR
,
587 (WPARAM
)hdc
,(LPARAM
)hwnd
);
589 hBrush
= DEFWND_ControlColor( hdc
, CTLCOLOR_SCROLLBAR
);
591 hSavePen
= SelectObject( hdc
, SYSCOLOR_GetPen(COLOR_WINDOWFRAME
) );
592 hSaveBrush
= SelectObject( hdc
, hBrush
);
594 /* Calculate the scroll rectangle */
599 r
.top
+= arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
600 r
.bottom
-= (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
604 r
.left
+= arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
;
605 r
.right
-= (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
608 /* Draw the scroll bar frame */
610 /* Draw the scroll rectangles and thumb */
612 if (!thumbPos
) /* No thumb to draw */
614 PatBlt( hdc
, r
.left
, r
.top
, r
.right
- r
.left
, r
.bottom
- r
.top
, PATCOPY
);
616 /* cleanup and return */
617 SelectObject( hdc
, hSavePen
);
618 SelectObject( hdc
, hSaveBrush
);
624 PatBlt( hdc
, r
.left
, r
.top
, r
.right
- r
.left
,
625 thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
),
626 top_selected
? 0x0f0000 : PATCOPY
);
627 r
.top
+= thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
628 PatBlt( hdc
, r
.left
, r
.top
+ thumbSize
, r
.right
- r
.left
,
629 r
.bottom
- r
.top
- thumbSize
,
630 bottom_selected
? 0x0f0000 : PATCOPY
);
631 r
.bottom
= r
.top
+ thumbSize
;
633 else /* horizontal */
635 PatBlt( hdc
, r
.left
, r
.top
,
636 thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
),
637 r
.bottom
- r
.top
, top_selected
? 0x0f0000 : PATCOPY
);
638 r
.left
+= thumbPos
- (arrowSize
- SCROLL_ARROW_THUMB_OVERLAP
);
639 PatBlt( hdc
, r
.left
+ thumbSize
, r
.top
, r
.right
- r
.left
- thumbSize
,
640 r
.bottom
- r
.top
, bottom_selected
? 0x0f0000 : PATCOPY
);
641 r
.right
= r
.left
+ thumbSize
;
646 SelectObject( hdc
, GetSysColorBrush(COLOR_BTNFACE
) );
647 Rectangle( hdc
, r
.left
+1, r
.top
+1, r
.right
-1, r
.bottom
-1 );
648 DrawEdge( hdc
, &r
, EDGE_RAISED
, BF_RECT
);
650 if (Save_SCROLL_MovingThumb
&&
651 (SCROLL_TrackingWin
== hwnd
) &&
652 (SCROLL_TrackingBar
== nBar
))
653 SCROLL_DrawMovingThumb( hdc
, rect
, vertical
, arrowSize
, thumbSize
);
656 SelectObject( hdc
, hSavePen
);
657 SelectObject( hdc
, hSaveBrush
);
661 /***********************************************************************
662 * SCROLL_DrawScrollBar
664 * Redraw the whole scrollbar.
666 void SCROLL_DrawScrollBar( HWND hwnd
, HDC hdc
, INT nBar
,
667 BOOL arrows
, BOOL interior
)
669 INT arrowSize
, thumbSize
, thumbPos
;
672 SCROLLBAR_INFO
*infoPtr
= SCROLL_GetInternalInfo( hwnd
, nBar
, TRUE
);
673 BOOL Save_SCROLL_MovingThumb
= SCROLL_MovingThumb
;
674 DWORD style
= GetWindowLongW( hwnd
, GWL_STYLE
);
676 if (!(hwnd
= WIN_GetFullHandle( hwnd
))) return;
679 ((nBar
== SB_VERT
) && !(style
& WS_VSCROLL
)) ||
680 ((nBar
== SB_HORZ
) && !(style
& WS_HSCROLL
))) return;
681 if (!WIN_IsWindowDrawable( hwnd
, FALSE
)) return;
683 vertical
= SCROLL_GetScrollBarRect( hwnd
, nBar
, &rect
,
684 &arrowSize
, &thumbSize
, &thumbPos
);
686 /* do not draw if the scrollbar rectangle is empty */
687 if(IsRectEmpty(&rect
)) return;
689 if (Save_SCROLL_MovingThumb
&&
690 (SCROLL_TrackingWin
== hwnd
) &&
691 (SCROLL_TrackingBar
== nBar
))
692 SCROLL_DrawMovingThumb( hdc
, &rect
, vertical
, arrowSize
, thumbSize
);
694 /* Draw the arrows */
696 if (arrows
&& arrowSize
)
698 if( vertical
== SCROLL_trackVertical
&& GetCapture() == hwnd
)
699 SCROLL_DrawArrows( hdc
, infoPtr
, &rect
, arrowSize
, vertical
,
700 (SCROLL_trackHitTest
== SCROLL_TOP_ARROW
),
701 (SCROLL_trackHitTest
== SCROLL_BOTTOM_ARROW
) );
703 SCROLL_DrawArrows( hdc
, infoPtr
, &rect
, arrowSize
, vertical
,
707 SCROLL_DrawInterior( hwnd
, hdc
, nBar
, &rect
, arrowSize
, thumbSize
,
708 thumbPos
, infoPtr
->flags
, vertical
, FALSE
, FALSE
);
710 if (Save_SCROLL_MovingThumb
&&
711 (SCROLL_TrackingWin
== hwnd
) &&
712 (SCROLL_TrackingBar
== nBar
))
713 SCROLL_DrawMovingThumb( hdc
, &rect
, vertical
, arrowSize
, thumbSize
);
715 /* if scroll bar has focus, reposition the caret */
716 if(hwnd
==GetFocus() && (nBar
==SB_CTL
))
720 SetCaretPos(thumbPos
+1, rect
.top
+1);
724 SetCaretPos(rect
.top
+1, thumbPos
+1);
729 /***********************************************************************
730 * SCROLL_DrawSizeGrip
732 * Draw the size grip.
734 static void SCROLL_DrawSizeGrip( HWND hwnd
, HDC hdc
)
738 GetClientRect( hwnd
, &rc
);
739 FillRect( hdc
, &rc
, GetSysColorBrush(COLOR_SCROLLBAR
) );
740 rc
.left
= max( rc
.left
, rc
.right
- GetSystemMetrics(SM_CXVSCROLL
) - 1 );
741 rc
.top
= max( rc
.top
, rc
.bottom
- GetSystemMetrics(SM_CYHSCROLL
) - 1 );
742 DrawFrameControl( hdc
, &rc
, DFC_SCROLL
, DFCS_SCROLLSIZEGRIP
);
746 /***********************************************************************
747 * SCROLL_RefreshScrollBar
749 * Repaint the scroll bar interior after a SetScrollRange() or
750 * SetScrollPos() call.
752 static void SCROLL_RefreshScrollBar( HWND hwnd
, INT nBar
,
753 BOOL arrows
, BOOL interior
)
755 HDC hdc
= GetDCEx( hwnd
, 0,
756 DCX_CACHE
| ((nBar
== SB_CTL
) ? 0 : DCX_WINDOW
) );
759 SCROLL_DrawScrollBar( hwnd
, hdc
, nBar
, arrows
, interior
);
760 ReleaseDC( hwnd
, hdc
);
764 /***********************************************************************
765 * SCROLL_HandleKbdEvent
767 * Handle a keyboard event (only for SB_CTL scrollbars with focus).
770 * hwnd [I] Handle of window with scrollbar(s)
771 * wParam [I] Variable input including enable state
772 * lParam [I] Variable input including input point
774 static void SCROLL_HandleKbdEvent(HWND hwnd
, WPARAM wParam
, LPARAM lParam
)
776 TRACE("hwnd=%p wParam=%ld lParam=%ld\n", hwnd
, wParam
, lParam
);
778 /* hide caret on first KEYDOWN to prevent flicker */
779 if ((lParam
& PFD_DOUBLEBUFFER_DONTCARE
) == 0)
784 case VK_PRIOR
: wParam
= SB_PAGEUP
; break;
785 case VK_NEXT
: wParam
= SB_PAGEDOWN
; break;
786 case VK_HOME
: wParam
= SB_TOP
; break;
787 case VK_END
: wParam
= SB_BOTTOM
; break;
788 case VK_UP
: wParam
= SB_LINEUP
; break;
789 case VK_DOWN
: wParam
= SB_LINEDOWN
; break;
790 case VK_LEFT
: wParam
= SB_LINEUP
; break;
791 case VK_RIGHT
: wParam
= SB_LINEDOWN
; break;
794 SendMessageW(GetParent(hwnd
),
795 ((GetWindowLongW( hwnd
, GWL_STYLE
) & SBS_VERT
) ?
796 WM_VSCROLL
: WM_HSCROLL
), wParam
, (LPARAM
)hwnd
);
800 /***********************************************************************
801 * SCROLL_HandleScrollEvent
803 * Handle a mouse or timer event for the scrollbar.
804 * 'pt' is the location of the mouse event in client (for SB_CTL) or
805 * windows coordinates.
807 static void SCROLL_HandleScrollEvent( HWND hwnd
, INT nBar
, UINT msg
, POINT pt
)
809 /* Previous mouse position for timer events */
811 /* Thumb position when tracking started. */
812 static UINT trackThumbPos
;
813 /* Position in the scroll-bar of the last button-down event. */
814 static INT lastClickPos
;
815 /* Position in the scroll-bar of the last mouse event. */
816 static INT lastMousePos
;
818 enum SCROLL_HITTEST hittest
;
819 HWND hwndOwner
, hwndCtl
;
821 INT arrowSize
, thumbSize
, thumbPos
;
825 SCROLLBAR_INFO
*infoPtr
= SCROLL_GetInternalInfo( hwnd
, nBar
, FALSE
);
826 if (!infoPtr
) return;
827 if ((SCROLL_trackHitTest
== SCROLL_NOWHERE
) && (msg
!= WM_LBUTTONDOWN
))
830 if (nBar
== SB_CTL
&& (GetWindowLongW( hwnd
, GWL_STYLE
) & (SBS_SIZEGRIP
| SBS_SIZEBOX
)))
834 case WM_LBUTTONDOWN
: /* Initialise mouse tracking */
835 HideCaret(hwnd
); /* hide caret while holding down LBUTTON */
838 SCROLL_trackHitTest
= hittest
= SCROLL_THUMB
;
841 GetClientRect(GetParent(GetParent(hwnd
)),&rect
);
846 SCROLL_trackHitTest
= hittest
= SCROLL_NOWHERE
;
847 if (hwnd
==GetFocus()) ShowCaret(hwnd
);
856 hdc
= GetDCEx( hwnd
, 0, DCX_CACHE
| ((nBar
== SB_CTL
) ? 0 : DCX_WINDOW
));
857 vertical
= SCROLL_GetScrollBarRect( hwnd
, nBar
, &rect
,
858 &arrowSize
, &thumbSize
, &thumbPos
);
859 hwndOwner
= (nBar
== SB_CTL
) ? GetParent(hwnd
) : hwnd
;
860 hwndCtl
= (nBar
== SB_CTL
) ? hwnd
: 0;
864 case WM_LBUTTONDOWN
: /* Initialise mouse tracking */
865 HideCaret(hwnd
); /* hide caret while holding down LBUTTON */
866 SCROLL_trackVertical
= vertical
;
867 SCROLL_trackHitTest
= hittest
= SCROLL_HitTest( hwnd
, nBar
, pt
, FALSE
);
868 lastClickPos
= vertical
? (pt
.y
- rect
.top
) : (pt
.x
- rect
.left
);
869 lastMousePos
= lastClickPos
;
870 trackThumbPos
= thumbPos
;
872 if (nBar
== SB_CTL
&& (GetWindowLongW(hwnd
, GWL_STYLE
) & WS_TABSTOP
)) SetFocus( hwnd
);
877 hittest
= SCROLL_HitTest( hwnd
, nBar
, pt
, TRUE
);
882 hittest
= SCROLL_NOWHERE
;
884 /* if scrollbar has focus, show back caret */
885 if (hwnd
==GetFocus()) ShowCaret(hwnd
);
890 hittest
= SCROLL_HitTest( hwnd
, nBar
, pt
, FALSE
);
894 return; /* Should never happen */
897 TRACE("Event: hwnd=%p bar=%d msg=%s pt=%d,%d hit=%d\n",
898 hwnd
, nBar
, SPY_GetMsgName(msg
,hwnd
), pt
.x
, pt
.y
, hittest
);
900 switch(SCROLL_trackHitTest
)
902 case SCROLL_NOWHERE
: /* No tracking in progress */
905 case SCROLL_TOP_ARROW
:
906 SCROLL_DrawArrows( hdc
, infoPtr
, &rect
, arrowSize
, vertical
,
907 (hittest
== SCROLL_trackHitTest
), FALSE
);
908 if (hittest
== SCROLL_trackHitTest
)
910 if ((msg
== WM_LBUTTONDOWN
) || (msg
== WM_SYSTIMER
))
912 SendMessageW( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
913 SB_LINEUP
, (LPARAM
)hwndCtl
);
916 SetSystemTimer( hwnd
, SCROLL_TIMER
, (msg
== WM_LBUTTONDOWN
) ?
917 SCROLL_FIRST_DELAY
: SCROLL_REPEAT_DELAY
,
920 else KillSystemTimer( hwnd
, SCROLL_TIMER
);
923 case SCROLL_TOP_RECT
:
924 SCROLL_DrawInterior( hwnd
, hdc
, nBar
, &rect
, arrowSize
, thumbSize
,
925 thumbPos
, infoPtr
->flags
, vertical
,
926 (hittest
== SCROLL_trackHitTest
), FALSE
);
927 if (hittest
== SCROLL_trackHitTest
)
929 if ((msg
== WM_LBUTTONDOWN
) || (msg
== WM_SYSTIMER
))
931 SendMessageW( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
932 SB_PAGEUP
, (LPARAM
)hwndCtl
);
934 SetSystemTimer( hwnd
, SCROLL_TIMER
, (msg
== WM_LBUTTONDOWN
) ?
935 SCROLL_FIRST_DELAY
: SCROLL_REPEAT_DELAY
,
938 else KillSystemTimer( hwnd
, SCROLL_TIMER
);
942 if (msg
== WM_LBUTTONDOWN
)
944 SCROLL_TrackingWin
= hwnd
;
945 SCROLL_TrackingBar
= nBar
;
946 SCROLL_TrackingPos
= trackThumbPos
+ lastMousePos
- lastClickPos
;
947 SCROLL_TrackingVal
= SCROLL_GetThumbVal( infoPtr
, &rect
,
949 SCROLL_TrackingPos
);
950 if (!SCROLL_MovingThumb
)
951 SCROLL_DrawMovingThumb(hdc
, &rect
, vertical
, arrowSize
, thumbSize
);
953 else if (msg
== WM_LBUTTONUP
)
955 if (SCROLL_MovingThumb
)
956 SCROLL_DrawMovingThumb(hdc
, &rect
, vertical
, arrowSize
, thumbSize
);
958 SCROLL_DrawInterior( hwnd
, hdc
, nBar
, &rect
, arrowSize
, thumbSize
,
959 thumbPos
, infoPtr
->flags
, vertical
,
962 else /* WM_MOUSEMOVE */
966 if (!SCROLL_PtInRectEx( &rect
, pt
, vertical
)) pos
= lastClickPos
;
969 pt
= SCROLL_ClipPos( &rect
, pt
);
970 pos
= vertical
? (pt
.y
- rect
.top
) : (pt
.x
- rect
.left
);
972 if ( (pos
!= lastMousePos
) || (!SCROLL_MovingThumb
) )
974 if (SCROLL_MovingThumb
)
975 SCROLL_DrawMovingThumb( hdc
, &rect
, vertical
,
976 arrowSize
, thumbSize
);
978 SCROLL_TrackingPos
= trackThumbPos
+ pos
- lastClickPos
;
979 SCROLL_TrackingVal
= SCROLL_GetThumbVal( infoPtr
, &rect
,
981 SCROLL_TrackingPos
);
982 SendMessageW( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
983 MAKEWPARAM( SB_THUMBTRACK
, SCROLL_TrackingVal
),
985 if (!SCROLL_MovingThumb
)
986 SCROLL_DrawMovingThumb( hdc
, &rect
, vertical
,
987 arrowSize
, thumbSize
);
992 case SCROLL_BOTTOM_RECT
:
993 SCROLL_DrawInterior( hwnd
, hdc
, nBar
, &rect
, arrowSize
, thumbSize
,
994 thumbPos
, infoPtr
->flags
, vertical
,
995 FALSE
, (hittest
== SCROLL_trackHitTest
) );
996 if (hittest
== SCROLL_trackHitTest
)
998 if ((msg
== WM_LBUTTONDOWN
) || (msg
== WM_SYSTIMER
))
1000 SendMessageW( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
1001 SB_PAGEDOWN
, (LPARAM
)hwndCtl
);
1003 SetSystemTimer( hwnd
, SCROLL_TIMER
, (msg
== WM_LBUTTONDOWN
) ?
1004 SCROLL_FIRST_DELAY
: SCROLL_REPEAT_DELAY
,
1007 else KillSystemTimer( hwnd
, SCROLL_TIMER
);
1010 case SCROLL_BOTTOM_ARROW
:
1011 SCROLL_DrawArrows( hdc
, infoPtr
, &rect
, arrowSize
, vertical
,
1012 FALSE
, (hittest
== SCROLL_trackHitTest
) );
1013 if (hittest
== SCROLL_trackHitTest
)
1015 if ((msg
== WM_LBUTTONDOWN
) || (msg
== WM_SYSTIMER
))
1017 SendMessageW( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
1018 SB_LINEDOWN
, (LPARAM
)hwndCtl
);
1021 SetSystemTimer( hwnd
, SCROLL_TIMER
, (msg
== WM_LBUTTONDOWN
) ?
1022 SCROLL_FIRST_DELAY
: SCROLL_REPEAT_DELAY
,
1025 else KillSystemTimer( hwnd
, SCROLL_TIMER
);
1029 if (msg
== WM_LBUTTONDOWN
)
1032 if (hittest
== SCROLL_THUMB
)
1034 UINT val
= SCROLL_GetThumbVal( infoPtr
, &rect
, vertical
,
1035 trackThumbPos
+ lastMousePos
- lastClickPos
);
1036 SendMessageW( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
1037 MAKEWPARAM( SB_THUMBTRACK
, val
), (LPARAM
)hwndCtl
);
1041 if (msg
== WM_LBUTTONUP
)
1043 hittest
= SCROLL_trackHitTest
;
1044 SCROLL_trackHitTest
= SCROLL_NOWHERE
; /* Terminate tracking */
1046 if (hittest
== SCROLL_THUMB
)
1048 UINT val
= SCROLL_GetThumbVal( infoPtr
, &rect
, vertical
,
1049 trackThumbPos
+ lastMousePos
- lastClickPos
);
1050 SendMessageW( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
1051 MAKEWPARAM( SB_THUMBPOSITION
, val
), (LPARAM
)hwndCtl
);
1053 /* SB_ENDSCROLL doesn't report thumb position */
1054 SendMessageW( hwndOwner
, vertical
? WM_VSCROLL
: WM_HSCROLL
,
1055 SB_ENDSCROLL
, (LPARAM
)hwndCtl
);
1057 /* Terminate tracking */
1058 SCROLL_TrackingWin
= 0;
1061 ReleaseDC( hwnd
, hdc
);
1065 /***********************************************************************
1066 * SCROLL_TrackScrollBar
1068 * Track a mouse button press on a scroll-bar.
1069 * pt is in screen-coordinates for non-client scroll bars.
1071 void SCROLL_TrackScrollBar( HWND hwnd
, INT scrollbar
, POINT pt
)
1074 INT xoffset
= 0, yoffset
= 0;
1076 if (scrollbar
!= SB_CTL
)
1078 WND
*wndPtr
= WIN_GetPtr( hwnd
);
1079 if (!wndPtr
|| wndPtr
== WND_OTHER_PROCESS
|| wndPtr
== WND_DESKTOP
) return;
1080 xoffset
= wndPtr
->rectClient
.left
- wndPtr
->rectWindow
.left
;
1081 yoffset
= wndPtr
->rectClient
.top
- wndPtr
->rectWindow
.top
;
1082 WIN_ReleasePtr( wndPtr
);
1083 ScreenToClient( hwnd
, &pt
);
1088 SCROLL_HandleScrollEvent( hwnd
, scrollbar
, WM_LBUTTONDOWN
, pt
);
1092 if (!GetMessageW( &msg
, 0, 0, 0 )) break;
1093 if (CallMsgFilterW( &msg
, MSGF_SCROLLBAR
)) continue;
1094 if (msg
.message
== WM_LBUTTONUP
||
1095 msg
.message
== WM_MOUSEMOVE
||
1096 (msg
.message
== WM_SYSTIMER
&& msg
.wParam
== SCROLL_TIMER
))
1098 pt
.x
= (short)LOWORD(msg
.lParam
) + xoffset
;
1099 pt
.y
= (short)HIWORD(msg
.lParam
) + yoffset
;
1100 SCROLL_HandleScrollEvent( hwnd
, scrollbar
, msg
.message
, pt
);
1104 TranslateMessage( &msg
);
1105 DispatchMessageW( &msg
);
1107 if (!IsWindow( hwnd
))
1112 } while (msg
.message
!= WM_LBUTTONUP
);
1116 /***********************************************************************
1117 * SCROLL_CreateScrollBar
1119 * Create a scroll bar
1122 * hwnd [I] Handle of window with scrollbar(s)
1123 * lpCreate [I] The style and place of the scroll bar
1125 static void SCROLL_CreateScrollBar(HWND hwnd
, LPCREATESTRUCTW lpCreate
)
1127 LPSCROLLBAR_INFO info
= SCROLL_GetInternalInfo(hwnd
, SB_CTL
, TRUE
);
1130 TRACE("hwnd=%p lpCreate=%p\n", hwnd
, lpCreate
);
1132 if (lpCreate
->style
& WS_DISABLED
)
1134 info
->flags
= ESB_DISABLE_BOTH
;
1135 TRACE("Created WS_DISABLED scrollbar\n");
1139 if (lpCreate
->style
& (SBS_SIZEGRIP
| SBS_SIZEBOX
))
1141 if (lpCreate
->style
& SBS_SIZEBOXTOPLEFTALIGN
)
1142 MoveWindow( hwnd
, lpCreate
->x
, lpCreate
->y
, GetSystemMetrics(SM_CXVSCROLL
)+1,
1143 GetSystemMetrics(SM_CYHSCROLL
)+1, FALSE
);
1144 else if(lpCreate
->style
& SBS_SIZEBOXBOTTOMRIGHTALIGN
)
1145 MoveWindow( hwnd
, lpCreate
->x
+lpCreate
->cx
-GetSystemMetrics(SM_CXVSCROLL
)-1,
1146 lpCreate
->y
+lpCreate
->cy
-GetSystemMetrics(SM_CYHSCROLL
)-1,
1147 GetSystemMetrics(SM_CXVSCROLL
)+1,
1148 GetSystemMetrics(SM_CYHSCROLL
)+1, FALSE
);
1150 else if (lpCreate
->style
& SBS_VERT
)
1152 if (lpCreate
->style
& SBS_LEFTALIGN
)
1153 MoveWindow( hwnd
, lpCreate
->x
, lpCreate
->y
,
1154 GetSystemMetrics(SM_CXVSCROLL
)+1, lpCreate
->cy
, FALSE
);
1155 else if (lpCreate
->style
& SBS_RIGHTALIGN
)
1157 lpCreate
->x
+lpCreate
->cx
-GetSystemMetrics(SM_CXVSCROLL
)-1,
1159 GetSystemMetrics(SM_CXVSCROLL
)+1, lpCreate
->cy
, FALSE
);
1163 if (lpCreate
->style
& SBS_TOPALIGN
)
1164 MoveWindow( hwnd
, lpCreate
->x
, lpCreate
->y
,
1165 lpCreate
->cx
, GetSystemMetrics(SM_CYHSCROLL
)+1, FALSE
);
1166 else if (lpCreate
->style
& SBS_BOTTOMALIGN
)
1169 lpCreate
->y
+lpCreate
->cy
-GetSystemMetrics(SM_CYHSCROLL
)-1,
1170 lpCreate
->cx
, GetSystemMetrics(SM_CYHSCROLL
)+1, FALSE
);
1175 /*************************************************************************
1176 * SCROLL_GetScrollInfo
1178 * Internal helper for the API function
1181 * hwnd [I] Handle of window with scrollbar(s)
1182 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1183 * info [IO] fMask specifies which values to retrieve
1186 * FALSE if requested field not filled (f.i. scroll bar does not exist)
1188 static BOOL
SCROLL_GetScrollInfo(HWND hwnd
, INT nBar
, LPSCROLLINFO info
)
1190 LPSCROLLBAR_INFO infoPtr
;
1192 /* handle invalid data structure */
1193 if (!SCROLL_ScrollInfoValid(info
)
1194 || !(infoPtr
= SCROLL_GetInternalInfo(hwnd
, nBar
, FALSE
)))
1197 /* fill in the desired scroll info structure */
1198 if (info
->fMask
& SIF_PAGE
) info
->nPage
= infoPtr
->page
;
1199 if (info
->fMask
& SIF_POS
) info
->nPos
= infoPtr
->curVal
;
1200 if ((info
->fMask
& SIF_TRACKPOS
) && (info
->cbSize
== sizeof(*info
)))
1201 info
->nTrackPos
= (SCROLL_TrackingWin
== WIN_GetFullHandle(hwnd
)) ? SCROLL_TrackingVal
: infoPtr
->curVal
;
1202 if (info
->fMask
& SIF_RANGE
)
1204 info
->nMin
= infoPtr
->minVal
;
1205 info
->nMax
= infoPtr
->maxVal
;
1208 TRACE("cbSize %02x fMask %04x nMin %d nMax %d nPage %u nPos %d nTrackPos %d\n",
1209 info
->cbSize
, info
->fMask
, info
->nMin
, info
->nMax
, info
->nPage
,
1210 info
->nPos
, info
->nTrackPos
);
1212 return (info
->fMask
& SIF_ALL
) != 0;
1216 /*************************************************************************
1217 * SCROLL_GetScrollBarInfo
1219 * Internal helper for the API function
1222 * hwnd [I] Handle of window with scrollbar(s)
1223 * idObject [I] One of OBJID_CLIENT, OBJID_HSCROLL, or OBJID_VSCROLL
1224 * info [IO] cbSize specifies the size of the structure
1229 static BOOL
SCROLL_GetScrollBarInfo(HWND hwnd
, LONG idObject
, LPSCROLLBARINFO info
)
1231 LPSCROLLBAR_INFO infoPtr
;
1234 DWORD style
= GetWindowLongW(hwnd
, GWL_STYLE
);
1239 case OBJID_CLIENT
: nBar
= SB_CTL
; break;
1240 case OBJID_HSCROLL
: nBar
= SB_HORZ
; break;
1241 case OBJID_VSCROLL
: nBar
= SB_VERT
; break;
1242 default: return FALSE
;
1245 /* handle invalid data structure */
1246 if (info
->cbSize
!= sizeof(*info
))
1249 SCROLL_GetScrollBarRect(hwnd
, nBar
, &info
->rcScrollBar
, &nDummy
,
1250 &info
->dxyLineButton
, &info
->xyThumbTop
);
1252 info
->xyThumbBottom
= info
->xyThumbTop
+ info
->dxyLineButton
;
1254 infoPtr
= SCROLL_GetInternalInfo(hwnd
, nBar
, TRUE
);
1256 /* Scroll bar state */
1257 info
->rgstate
[0] = 0;
1258 if ((nBar
== SB_HORZ
&& !(style
& WS_HSCROLL
))
1259 || (nBar
== SB_VERT
&& !(style
& WS_VSCROLL
)))
1260 info
->rgstate
[0] |= STATE_SYSTEM_INVISIBLE
;
1261 if (infoPtr
->minVal
>= infoPtr
->maxVal
- max(infoPtr
->page
- 1, 0))
1263 if (!(info
->rgstate
[0] & STATE_SYSTEM_INVISIBLE
))
1264 info
->rgstate
[0] |= STATE_SYSTEM_UNAVAILABLE
;
1266 info
->rgstate
[0] |= STATE_SYSTEM_OFFSCREEN
;
1268 if (nBar
== SB_CTL
&& !IsWindowEnabled(hwnd
))
1269 info
->rgstate
[0] |= STATE_SYSTEM_UNAVAILABLE
;
1271 pressed
= ((nBar
== SB_VERT
) == SCROLL_trackVertical
&& GetCapture() == hwnd
);
1273 /* Top/left arrow button state. MSDN says top/right, but I don't believe it */
1274 info
->rgstate
[1] = 0;
1275 if (pressed
&& SCROLL_trackHitTest
== SCROLL_TOP_ARROW
)
1276 info
->rgstate
[1] |= STATE_SYSTEM_PRESSED
;
1277 if (infoPtr
->flags
& ESB_DISABLE_LTUP
)
1278 info
->rgstate
[1] |= STATE_SYSTEM_UNAVAILABLE
;
1280 /* Page up/left region state. MSDN says up/right, but I don't believe it */
1281 info
->rgstate
[2] = 0;
1282 if (infoPtr
->curVal
== infoPtr
->minVal
)
1283 info
->rgstate
[2] |= STATE_SYSTEM_INVISIBLE
;
1284 if (pressed
&& SCROLL_trackHitTest
== SCROLL_TOP_RECT
)
1285 info
->rgstate
[2] |= STATE_SYSTEM_PRESSED
;
1288 info
->rgstate
[3] = 0;
1289 if (pressed
&& SCROLL_trackHitTest
== SCROLL_THUMB
)
1290 info
->rgstate
[3] |= STATE_SYSTEM_PRESSED
;
1292 /* Page down/right region state. MSDN says down/left, but I don't believe it */
1293 info
->rgstate
[4] = 0;
1294 if (infoPtr
->curVal
>= infoPtr
->maxVal
- 1)
1295 info
->rgstate
[4] |= STATE_SYSTEM_INVISIBLE
;
1296 if (pressed
&& SCROLL_trackHitTest
== SCROLL_BOTTOM_RECT
)
1297 info
->rgstate
[4] |= STATE_SYSTEM_PRESSED
;
1299 /* Bottom/right arrow button state. MSDN says bottom/left, but I don't believe it */
1300 info
->rgstate
[5] = 0;
1301 if (pressed
&& SCROLL_trackHitTest
== SCROLL_BOTTOM_ARROW
)
1302 info
->rgstate
[5] |= STATE_SYSTEM_PRESSED
;
1303 if (infoPtr
->flags
& ESB_DISABLE_RTDN
)
1304 info
->rgstate
[5] |= STATE_SYSTEM_UNAVAILABLE
;
1310 /*************************************************************************
1311 * SCROLL_GetScrollPos
1313 * Internal helper for the API function
1316 * hwnd [I] Handle of window with scrollbar(s)
1317 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1319 static INT
SCROLL_GetScrollPos(HWND hwnd
, INT nBar
)
1321 LPSCROLLBAR_INFO infoPtr
= SCROLL_GetInternalInfo(hwnd
, nBar
, FALSE
);
1322 return infoPtr
? infoPtr
->curVal
: 0;
1326 /*************************************************************************
1327 * SCROLL_GetScrollRange
1329 * Internal helper for the API function
1332 * hwnd [I] Handle of window with scrollbar(s)
1333 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1334 * lpMin [O] Where to store minimum value
1335 * lpMax [O] Where to store maximum value
1341 static BOOL
SCROLL_GetScrollRange(HWND hwnd
, INT nBar
, LPINT lpMin
, LPINT lpMax
)
1343 LPSCROLLBAR_INFO infoPtr
= SCROLL_GetInternalInfo(hwnd
, nBar
, FALSE
);
1345 if (lpMin
) *lpMin
= infoPtr
? infoPtr
->minVal
: 0;
1346 if (lpMax
) *lpMax
= infoPtr
? infoPtr
->maxVal
: 0;
1352 /*************************************************************************
1353 * SCROLL_SetScrollRange
1356 * hwnd [I] Handle of window with scrollbar(s)
1357 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1358 * lpMin [I] Minimum value
1359 * lpMax [I] Maximum value
1362 static BOOL
SCROLL_SetScrollRange(HWND hwnd
, INT nBar
, INT minVal
, INT maxVal
)
1364 LPSCROLLBAR_INFO infoPtr
= SCROLL_GetInternalInfo(hwnd
, nBar
, FALSE
);
1366 TRACE("hwnd=%p nBar=%d min=%d max=%d\n", hwnd
, nBar
, minVal
, maxVal
);
1370 infoPtr
->minVal
= minVal
;
1371 infoPtr
->maxVal
= maxVal
;
1377 /***********************************************************************
1380 static LRESULT WINAPI
ScrollBarWndProc( HWND hwnd
, UINT message
, WPARAM wParam
, LPARAM lParam
)
1382 if (!IsWindow( hwnd
)) return 0;
1387 SCROLL_CreateScrollBar(hwnd
, (LPCREATESTRUCTW
)lParam
);
1392 SCROLLBAR_INFO
*infoPtr
;
1393 if ((infoPtr
= SCROLL_GetInternalInfo( hwnd
, SB_CTL
, FALSE
)))
1395 infoPtr
->flags
= wParam
? ESB_ENABLE_BOTH
: ESB_DISABLE_BOTH
;
1396 SCROLL_RefreshScrollBar(hwnd
, SB_CTL
, TRUE
, TRUE
);
1401 case WM_LBUTTONDBLCLK
:
1402 case WM_LBUTTONDOWN
:
1405 pt
.x
= (short)LOWORD(lParam
);
1406 pt
.y
= (short)HIWORD(lParam
);
1407 SCROLL_TrackScrollBar( hwnd
, SB_CTL
, pt
);
1415 pt
.x
= (short)LOWORD(lParam
);
1416 pt
.y
= (short)HIWORD(lParam
);
1417 SCROLL_HandleScrollEvent( hwnd
, SB_CTL
, message
, pt
);
1422 SCROLL_HandleKbdEvent(hwnd
, wParam
, lParam
);
1431 /* Create a caret when a ScrollBar get focus */
1433 int arrowSize
, thumbSize
, thumbPos
, vertical
;
1434 vertical
= SCROLL_GetScrollBarRect( hwnd
, SB_CTL
, &rect
,
1435 &arrowSize
, &thumbSize
, &thumbPos
);
1438 CreateCaret(hwnd
, (HBITMAP
)1, thumbSize
-2, rect
.bottom
-rect
.top
-2);
1439 SetCaretPos(thumbPos
+1, rect
.top
+1);
1443 CreateCaret(hwnd
, (HBITMAP
)1, rect
.right
-rect
.left
-2,thumbSize
-2);
1444 SetCaretPos(rect
.top
+1, thumbPos
+1);
1453 int arrowSize
, thumbSize
, thumbPos
, vertical
;
1454 vertical
= SCROLL_GetScrollBarRect( hwnd
, SB_CTL
, &rect
,&arrowSize
, &thumbSize
, &thumbPos
);
1456 rect
.left
=thumbPos
+1;
1457 rect
.right
=rect
.left
+thumbSize
;
1461 rect
.top
=thumbPos
+1;
1462 rect
.bottom
=rect
.top
+thumbSize
;
1465 InvalidateRect(hwnd
,&rect
,0);
1474 return DLGC_WANTARROWS
; /* Windows returns this value */
1479 HDC hdc
= wParam
? (HDC
)wParam
: BeginPaint(hwnd
, &ps
);
1480 if (GetWindowLongW( hwnd
, GWL_STYLE
) & SBS_SIZEGRIP
)
1482 SCROLL_DrawSizeGrip( hwnd
, hdc
);
1484 else if (GetWindowLongW( hwnd
, GWL_STYLE
) & SBS_SIZEBOX
)
1487 GetClientRect( hwnd
, &rc
);
1488 FillRect( hdc
, &rc
, GetSysColorBrush(COLOR_SCROLLBAR
) );
1491 SCROLL_DrawScrollBar( hwnd
, hdc
, SB_CTL
, TRUE
, TRUE
);
1492 if (!wParam
) EndPaint(hwnd
, &ps
);
1498 return SetScrollPos( hwnd
, SB_CTL
, wParam
, (BOOL
)lParam
);
1502 return SCROLL_GetScrollPos(hwnd
, SB_CTL
);
1504 case SBM_SETRANGE16
:
1505 if (wParam
) message
= SBM_SETRANGEREDRAW
;
1506 wParam
= LOWORD(lParam
);
1507 lParam
= HIWORD(lParam
);
1509 case SBM_SETRANGEREDRAW
:
1512 INT oldPos
= SCROLL_GetScrollPos( hwnd
, SB_CTL
);
1513 SCROLL_SetScrollRange( hwnd
, SB_CTL
, wParam
, lParam
);
1514 if (message
== SBM_SETRANGEREDRAW
)
1515 SCROLL_RefreshScrollBar( hwnd
, SB_CTL
, TRUE
, TRUE
);
1516 if (oldPos
!= SCROLL_GetScrollPos( hwnd
, SB_CTL
)) return oldPos
;
1520 case SBM_GETRANGE16
:
1524 SCROLL_GetScrollRange(hwnd
, SB_CTL
, &min
, &max
);
1525 return MAKELRESULT(min
, max
);
1529 return SCROLL_GetScrollRange(hwnd
, SB_CTL
, (LPINT
)wParam
, (LPINT
)lParam
);
1531 case SBM_ENABLE_ARROWS16
:
1532 case SBM_ENABLE_ARROWS
:
1533 return EnableScrollBar( hwnd
, SB_CTL
, wParam
);
1535 case SBM_SETSCROLLINFO
:
1536 return SCROLL_SetScrollInfo( hwnd
, SB_CTL
, (SCROLLINFO
*)lParam
, wParam
);
1538 case SBM_GETSCROLLINFO
:
1539 return SCROLL_GetScrollInfo(hwnd
, SB_CTL
, (SCROLLINFO
*)lParam
);
1541 case SBM_GETSCROLLBARINFO
:
1542 return SCROLL_GetScrollBarInfo(hwnd
, OBJID_CLIENT
, (SCROLLBARINFO
*)lParam
);
1551 ERR("unknown Win32 msg %04x wp=%08lx lp=%08lx\n",
1552 message
, wParam
, lParam
);
1556 if (message
>= WM_USER
)
1557 WARN("unknown msg %04x wp=%04lx lp=%08lx\n",
1558 message
, wParam
, lParam
);
1559 return DefWindowProcW( hwnd
, message
, wParam
, lParam
);
1565 /*************************************************************************
1566 * SetScrollInfo (USER32.@)
1568 * SetScrollInfo can be used to set the position, upper bound,
1569 * lower bound, and page size of a scrollbar control.
1572 * hwnd [I] Handle of window with scrollbar(s)
1573 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1574 * info [I] Specifies what to change and new values
1575 * bRedraw [I] Should scrollbar be redrawn afterwards?
1578 * Scrollbar position
1581 * For 100 lines of text to be displayed in a window of 25 lines,
1582 * one would for instance use info->nMin=0, info->nMax=75
1583 * (corresponding to the 76 different positions of the window on
1584 * the text), and info->nPage=25.
1586 INT WINAPI
SetScrollInfo(HWND hwnd
, INT nBar
, const SCROLLINFO
*info
, BOOL bRedraw
)
1588 TRACE("hwnd=%p nBar=%d info=%p, bRedraw=%d\n", hwnd
, nBar
, info
, bRedraw
);
1590 /* Refer SB_CTL requests to the window */
1592 return SendMessageW(hwnd
, SBM_SETSCROLLINFO
, bRedraw
, (LPARAM
)info
);
1594 return SCROLL_SetScrollInfo( hwnd
, nBar
, info
, bRedraw
);
1597 static INT
SCROLL_SetScrollInfo( HWND hwnd
, INT nBar
, LPCSCROLLINFO info
, BOOL bRedraw
)
1599 /* Update the scrollbar state and set action flags according to
1600 * what has to be done graphics wise. */
1602 SCROLLBAR_INFO
*infoPtr
;
1606 /* handle invalid data structure */
1607 if (!SCROLL_ScrollInfoValid(info
)
1608 || !(infoPtr
= SCROLL_GetInternalInfo(hwnd
, nBar
, TRUE
)))
1611 if (TRACE_ON(scroll
))
1613 TRACE("hwnd=%p bar=%d", hwnd
, nBar
);
1614 if (info
->fMask
& SIF_PAGE
) TRACE( " page=%d", info
->nPage
);
1615 if (info
->fMask
& SIF_POS
) TRACE( " pos=%d", info
->nPos
);
1616 if (info
->fMask
& SIF_RANGE
) TRACE( " min=%d max=%d", info
->nMin
, info
->nMax
);
1620 /* Set the page size */
1622 if (info
->fMask
& SIF_PAGE
)
1624 if( infoPtr
->page
!= info
->nPage
)
1626 infoPtr
->page
= info
->nPage
;
1627 action
|= SA_SSI_REFRESH
;
1631 /* Set the scroll pos */
1633 if (info
->fMask
& SIF_POS
)
1635 if( infoPtr
->curVal
!= info
->nPos
)
1637 infoPtr
->curVal
= info
->nPos
;
1638 action
|= SA_SSI_REFRESH
;
1642 /* Set the scroll range */
1644 if (info
->fMask
& SIF_RANGE
)
1646 /* Invalid range -> range is set to (0,0) */
1647 if ((info
->nMin
> info
->nMax
) ||
1648 ((UINT
)(info
->nMax
- info
->nMin
) >= 0x80000000))
1650 action
|= SA_SSI_REFRESH
;
1651 infoPtr
->minVal
= 0;
1652 infoPtr
->maxVal
= 0;
1656 if( infoPtr
->minVal
!= info
->nMin
||
1657 infoPtr
->maxVal
!= info
->nMax
)
1659 action
|= SA_SSI_REFRESH
;
1660 infoPtr
->minVal
= info
->nMin
;
1661 infoPtr
->maxVal
= info
->nMax
;
1666 /* Make sure the page size is valid */
1667 if (infoPtr
->page
< 0) infoPtr
->page
= 0;
1668 else if (infoPtr
->page
> infoPtr
->maxVal
- infoPtr
->minVal
+ 1 )
1669 infoPtr
->page
= infoPtr
->maxVal
- infoPtr
->minVal
+ 1;
1671 /* Make sure the pos is inside the range */
1673 if (infoPtr
->curVal
< infoPtr
->minVal
)
1674 infoPtr
->curVal
= infoPtr
->minVal
;
1675 else if (infoPtr
->curVal
> infoPtr
->maxVal
- max( infoPtr
->page
-1, 0 ))
1676 infoPtr
->curVal
= infoPtr
->maxVal
- max( infoPtr
->page
-1, 0 );
1678 TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1679 infoPtr
->page
, infoPtr
->curVal
,
1680 infoPtr
->minVal
, infoPtr
->maxVal
);
1682 /* don't change the scrollbar state if SetScrollInfo
1683 * is just called with SIF_DISABLENOSCROLL
1685 if(!(info
->fMask
& SIF_ALL
)) goto done
;
1687 /* Check if the scrollbar should be hidden or disabled */
1689 if (info
->fMask
& (SIF_RANGE
| SIF_PAGE
| SIF_DISABLENOSCROLL
))
1691 new_flags
= infoPtr
->flags
;
1692 if (infoPtr
->minVal
>= infoPtr
->maxVal
- max( infoPtr
->page
-1, 0 ))
1694 /* Hide or disable scroll-bar */
1695 if (info
->fMask
& SIF_DISABLENOSCROLL
)
1697 new_flags
= ESB_DISABLE_BOTH
;
1698 action
|= SA_SSI_REFRESH
;
1700 else if ((nBar
!= SB_CTL
) && (action
& SA_SSI_REFRESH
))
1702 action
= SA_SSI_HIDE
;
1705 else /* Show and enable scroll-bar only if no page only changed. */
1706 if (info
->fMask
!= SIF_PAGE
)
1708 new_flags
= ESB_ENABLE_BOTH
;
1709 if ((nBar
!= SB_CTL
) && ( (action
& SA_SSI_REFRESH
) ))
1710 action
|= SA_SSI_SHOW
;
1713 if (infoPtr
->flags
!= new_flags
) /* check arrow flags */
1715 infoPtr
->flags
= new_flags
;
1716 action
|= SA_SSI_REPAINT_ARROWS
;
1721 if( action
& SA_SSI_HIDE
)
1722 SCROLL_ShowScrollBar( hwnd
, nBar
, FALSE
, FALSE
);
1725 if( action
& SA_SSI_SHOW
)
1726 if( SCROLL_ShowScrollBar( hwnd
, nBar
, TRUE
, TRUE
) )
1727 return infoPtr
->curVal
; /* SetWindowPos() already did the painting */
1730 SCROLL_RefreshScrollBar( hwnd
, nBar
, TRUE
, TRUE
);
1731 else if( action
& SA_SSI_REPAINT_ARROWS
)
1732 SCROLL_RefreshScrollBar( hwnd
, nBar
, TRUE
, FALSE
);
1735 /* Return current position */
1736 return infoPtr
->curVal
;
1740 /*************************************************************************
1741 * GetScrollInfo (USER32.@)
1743 * GetScrollInfo can be used to retrieve the position, upper bound,
1744 * lower bound, and page size of a scrollbar control.
1747 * hwnd [I] Handle of window with scrollbar(s)
1748 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1749 * info [IO] fMask specifies which values to retrieve
1752 * TRUE if SCROLLINFO is filled
1753 * ( if nBar is SB_CTL, GetScrollInfo returns TRUE even if nothing
1756 BOOL WINAPI
GetScrollInfo(HWND hwnd
, INT nBar
, LPSCROLLINFO info
)
1758 TRACE("hwnd=%p nBar=%d info=%p\n", hwnd
, nBar
, info
);
1760 /* Refer SB_CTL requests to the window */
1763 SendMessageW(hwnd
, SBM_GETSCROLLINFO
, (WPARAM
)0, (LPARAM
)info
);
1766 return SCROLL_GetScrollInfo(hwnd
, nBar
, info
);
1770 /*************************************************************************
1771 * GetScrollBarInfo (USER32.@)
1773 * GetScrollBarInfo can be used to retrieve information about a scrollbar
1777 * hwnd [I] Handle of window with scrollbar(s)
1778 * idObject [I] One of OBJID_CLIENT, OBJID_HSCROLL, or OBJID_VSCROLL
1779 * info [IO] cbSize specifies the size of SCROLLBARINFO
1784 BOOL WINAPI
GetScrollBarInfo(HWND hwnd
, LONG idObject
, LPSCROLLBARINFO info
)
1786 TRACE("hwnd=%p idObject=%d info=%p\n", hwnd
, idObject
, info
);
1788 /* Refer OBJID_CLIENT requests to the window */
1789 if (idObject
== OBJID_CLIENT
)
1790 return SendMessageW(hwnd
, SBM_GETSCROLLBARINFO
, (WPARAM
)0, (LPARAM
)info
);
1792 return SCROLL_GetScrollBarInfo(hwnd
, idObject
, info
);
1796 /*************************************************************************
1797 * SetScrollPos (USER32.@)
1799 * Sets the current position of the scroll thumb.
1802 * hwnd [I] Handle of window with scrollbar(s)
1803 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1804 * nPos [I] New value
1805 * bRedraw [I] Should scrollbar be redrawn afterwards?
1808 * Success: Scrollbar position
1812 * Note the ambiguity when 0 is returned. Use GetLastError
1813 * to make sure there was an error (and to know which one).
1815 INT WINAPI
SetScrollPos( HWND hwnd
, INT nBar
, INT nPos
, BOOL bRedraw
)
1818 SCROLLBAR_INFO
*infoPtr
;
1821 if (!(infoPtr
= SCROLL_GetInternalInfo( hwnd
, nBar
, FALSE
))) return 0;
1822 oldPos
= infoPtr
->curVal
;
1823 info
.cbSize
= sizeof(info
);
1825 info
.fMask
= SIF_POS
;
1826 SetScrollInfo( hwnd
, nBar
, &info
, bRedraw
);
1831 /*************************************************************************
1832 * GetScrollPos (USER32.@)
1834 * Gets the current position of the scroll thumb.
1837 * hwnd [I] Handle of window with scrollbar(s)
1838 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1841 * Success: Current position
1845 * There is ambiguity when 0 is returned. Use GetLastError
1846 * to make sure there was an error (and to know which one).
1848 INT WINAPI
GetScrollPos(HWND hwnd
, INT nBar
)
1850 TRACE("hwnd=%p nBar=%d\n", hwnd
, nBar
);
1852 /* Refer SB_CTL requests to the window */
1854 return SendMessageW(hwnd
, SBM_GETPOS
, (WPARAM
)0, (LPARAM
)0);
1856 return SCROLL_GetScrollPos(hwnd
, nBar
);
1860 /*************************************************************************
1861 * SetScrollRange (USER32.@)
1862 * The SetScrollRange function sets the minimum and maximum scroll box positions
1863 * If nMinPos and nMaxPos is the same value, the scroll bar will hide
1865 * Sets the range of the scroll bar.
1868 * hwnd [I] Handle of window with scrollbar(s)
1869 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1870 * minVal [I] New minimum value
1871 * maxVal [I] New Maximum value
1872 * bRedraw [I] Should scrollbar be redrawn afterwards?
1878 BOOL WINAPI
SetScrollRange(HWND hwnd
, INT nBar
, INT minVal
, INT maxVal
, BOOL bRedraw
)
1882 TRACE("hwnd=%p nBar=%d min=%d max=%d, bRedraw=%d\n", hwnd
, nBar
, minVal
, maxVal
, bRedraw
);
1884 info
.cbSize
= sizeof(info
);
1885 info
.fMask
= SIF_RANGE
;
1888 SetScrollInfo( hwnd
, nBar
, &info
, bRedraw
);
1893 /*************************************************************************
1894 * SCROLL_SetNCSbState
1896 * Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
1898 INT
SCROLL_SetNCSbState(HWND hwnd
, int vMin
, int vMax
, int vPos
,
1899 int hMin
, int hMax
, int hPos
)
1901 SCROLLINFO vInfo
, hInfo
;
1903 vInfo
.cbSize
= hInfo
.cbSize
= sizeof(SCROLLINFO
);
1910 vInfo
.fMask
= hInfo
.fMask
= SIF_RANGE
| SIF_POS
;
1912 SCROLL_SetScrollInfo( hwnd
, SB_VERT
, &vInfo
, TRUE
);
1913 SCROLL_SetScrollInfo( hwnd
, SB_HORZ
, &hInfo
, TRUE
);
1919 /*************************************************************************
1920 * GetScrollRange (USER32.@)
1922 * Gets the range of the scroll bar.
1925 * hwnd [I] Handle of window with scrollbar(s)
1926 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1927 * lpMin [O] Where to store minimum value
1928 * lpMax [O] Where to store maximum value
1931 * TRUE if values is filled
1933 BOOL WINAPI
GetScrollRange(HWND hwnd
, INT nBar
, LPINT lpMin
, LPINT lpMax
)
1935 TRACE("hwnd=%p nBar=%d lpMin=%p lpMax=%p\n", hwnd
, nBar
, lpMin
, lpMax
);
1937 /* Refer SB_CTL requests to the window */
1939 SendMessageW(hwnd
, SBM_GETRANGE
, (WPARAM
)lpMin
, (LPARAM
)lpMax
);
1941 SCROLL_GetScrollRange(hwnd
, nBar
, lpMin
, lpMax
);
1947 /*************************************************************************
1948 * SCROLL_ShowScrollBar()
1950 * Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
1952 static BOOL
SCROLL_ShowScrollBar( HWND hwnd
, INT nBar
, BOOL fShowH
, BOOL fShowV
)
1954 ULONG old_style
, set_bits
= 0, clear_bits
= 0;
1956 TRACE("hwnd=%p bar=%d horz=%d, vert=%d\n", hwnd
, nBar
, fShowH
, fShowV
);
1961 ShowWindow( hwnd
, fShowH
? SW_SHOW
: SW_HIDE
);
1966 if (fShowH
) set_bits
|= WS_HSCROLL
;
1967 else clear_bits
|= WS_HSCROLL
;
1968 if( nBar
== SB_HORZ
) break;
1971 if (fShowV
) set_bits
|= WS_VSCROLL
;
1972 else clear_bits
|= WS_VSCROLL
;
1976 return FALSE
; /* Nothing to do! */
1979 old_style
= WIN_SetStyle( hwnd
, set_bits
, clear_bits
);
1980 if ((old_style
& clear_bits
) != 0 || (old_style
& set_bits
) != set_bits
)
1982 /* frame has been changed, let the window redraw itself */
1983 SetWindowPos( hwnd
, 0, 0, 0, 0, 0, SWP_NOSIZE
| SWP_NOMOVE
1984 | SWP_NOACTIVATE
| SWP_NOZORDER
| SWP_FRAMECHANGED
);
1987 return FALSE
; /* no frame changes */
1991 /*************************************************************************
1992 * ShowScrollBar (USER32.@)
1994 * Shows or hides the scroll bar.
1997 * hwnd [I] Handle of window with scrollbar(s)
1998 * nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
1999 * fShow [I] TRUE = show, FALSE = hide
2005 BOOL WINAPI
ShowScrollBar(HWND hwnd
, INT nBar
, BOOL fShow
)
2007 SCROLL_ShowScrollBar( hwnd
, nBar
, (nBar
== SB_VERT
) ? 0 : fShow
,
2008 (nBar
== SB_HORZ
) ? 0 : fShow
);
2013 /*************************************************************************
2014 * EnableScrollBar (USER32.@)
2016 * Enables or disables the scroll bars.
2018 BOOL WINAPI
EnableScrollBar( HWND hwnd
, UINT nBar
, UINT flags
)
2021 SCROLLBAR_INFO
*infoPtr
;
2023 flags
&= ESB_DISABLE_BOTH
;
2025 if (nBar
== SB_BOTH
)
2027 if (!(infoPtr
= SCROLL_GetInternalInfo( hwnd
, SB_VERT
, TRUE
))) return FALSE
;
2028 if (!(bFineWithMe
= (infoPtr
->flags
== flags
)) )
2030 infoPtr
->flags
= flags
;
2031 SCROLL_RefreshScrollBar( hwnd
, SB_VERT
, TRUE
, TRUE
);
2038 if (!(infoPtr
= SCROLL_GetInternalInfo( hwnd
, nBar
, TRUE
))) return FALSE
;
2039 if (bFineWithMe
&& infoPtr
->flags
== flags
) return FALSE
;
2040 infoPtr
->flags
= flags
;
2042 SCROLL_RefreshScrollBar( hwnd
, nBar
, TRUE
, TRUE
);