1 /* File: button.c -- Button type widgets
3 * Copyright (C) 1993 Johannes Ruscheinski
4 * Copyright (C) 1993 David Metcalfe
5 * Copyright (C) 1994 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. 3, 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.
32 * - BS_NOTIFY: is it complete?
33 * - BS_RIGHTBUTTON: same as BS_LEFTTEXT
36 * - WM_CHAR: Checks a (manual or automatic) check box on '+' or '=', clears it on '-' key.
37 * - WM_SETFOCUS: For (manual or automatic) radio buttons, send the parent window BN_CLICKED
38 * - WM_NCCREATE: Turns any BS_OWNERDRAW button into a BS_PUSHBUTTON button.
49 * - BN_PUSHED/BN_HILITE
50 * + BN_KILLFOCUS: is it OK?
52 * + BN_SETFOCUS: is it OK?
53 * - BN_UNPUSHED/BN_UNHILITE
56 * Structures/Macros/Definitions
59 * - Button_GetIdealSize
60 * - Button_GetImageList
61 * - Button_GetTextMargin
62 * - Button_SetImageList
63 * - Button_SetTextMargin
67 #include <wine/debug.h>
68 WINE_DEFAULT_DEBUG_CHANNEL(button
);
70 /* GetWindowLong offsets for window extra information */
71 #define STATE_GWL_OFFSET 0
72 #define HFONT_GWL_OFFSET (sizeof(LONG))
73 #define HIMAGE_GWL_OFFSET (HFONT_GWL_OFFSET+sizeof(HFONT))
74 #define UISTATE_GWL_OFFSET (HIMAGE_GWL_OFFSET+sizeof(HFONT))
75 #define NB_EXTRA_BYTES (UISTATE_GWL_OFFSET+sizeof(LONG))
77 /* undocumented flags */
78 #define BUTTON_NSTATES 0x0F
79 #define BUTTON_BTNPRESSED 0x40
80 #define BUTTON_UNKNOWN2 0x20
81 #define BUTTON_UNKNOWN3 0x10
83 #define BUTTON_BMCLICK 0x100 // ReactOS Need to up to wine!
86 #define BUTTON_NOTIFY_PARENT(hWnd, code) \
87 do { /* Notify parent which has created this button control */ \
88 TRACE("notification " #code " sent to hwnd=%p\n", GetParent(hWnd)); \
89 SendMessageW(GetParent(hWnd), WM_COMMAND, \
90 MAKEWPARAM(GetWindowLongPtrW((hWnd),GWLP_ID), (code)), \
94 static UINT
BUTTON_CalcLabelRect( HWND hwnd
, HDC hdc
, RECT
*rc
);
95 static void PB_Paint( HWND hwnd
, HDC hDC
, UINT action
);
96 static void CB_Paint( HWND hwnd
, HDC hDC
, UINT action
);
97 static void GB_Paint( HWND hwnd
, HDC hDC
, UINT action
);
98 static void UB_Paint( HWND hwnd
, HDC hDC
, UINT action
);
99 static void OB_Paint( HWND hwnd
, HDC hDC
, UINT action
);
100 static void BUTTON_CheckAutoRadioButton( HWND hwnd
);
102 #define MAX_BTN_TYPE 16
104 static const WORD maxCheckState
[MAX_BTN_TYPE
] =
106 BST_UNCHECKED
, /* BS_PUSHBUTTON */
107 BST_UNCHECKED
, /* BS_DEFPUSHBUTTON */
108 BST_CHECKED
, /* BS_CHECKBOX */
109 BST_CHECKED
, /* BS_AUTOCHECKBOX */
110 BST_CHECKED
, /* BS_RADIOBUTTON */
111 BST_INDETERMINATE
, /* BS_3STATE */
112 BST_INDETERMINATE
, /* BS_AUTO3STATE */
113 BST_UNCHECKED
, /* BS_GROUPBOX */
114 BST_UNCHECKED
, /* BS_USERBUTTON */
115 BST_CHECKED
, /* BS_AUTORADIOBUTTON */
116 BST_UNCHECKED
, /* BS_PUSHBOX */
117 BST_UNCHECKED
/* BS_OWNERDRAW */
120 typedef void (*pfPaint
)( HWND hwnd
, HDC hdc
, UINT action
);
122 static const pfPaint btnPaintFunc
[MAX_BTN_TYPE
] =
124 PB_Paint
, /* BS_PUSHBUTTON */
125 PB_Paint
, /* BS_DEFPUSHBUTTON */
126 CB_Paint
, /* BS_CHECKBOX */
127 CB_Paint
, /* BS_AUTOCHECKBOX */
128 CB_Paint
, /* BS_RADIOBUTTON */
129 CB_Paint
, /* BS_3STATE */
130 CB_Paint
, /* BS_AUTO3STATE */
131 GB_Paint
, /* BS_GROUPBOX */
132 UB_Paint
, /* BS_USERBUTTON */
133 CB_Paint
, /* BS_AUTORADIOBUTTON */
134 NULL
, /* BS_PUSHBOX */
135 OB_Paint
/* BS_OWNERDRAW */
138 /* The original code from user32 was kept in order to make it easier to bring changes from user32 */
140 /*********************************************************************
141 * button class descriptor
143 static const WCHAR buttonW
[] = {'B','u','t','t','o','n',0};
144 const struct builtin_class_descr BUTTON_builtin_class
=
147 CS_DBLCLKS
| CS_VREDRAW
| CS_HREDRAW
| CS_PARENTDC
, /* style */
149 ButtonWndProcA
, /* procA */
150 ButtonWndProcW
, /* procW */
152 WINPROC_BUTTON
, /* proc */
154 NB_EXTRA_BYTES
, /* extra */
155 IDC_ARROW
, /* cursor */
161 static inline LONG
get_button_state( HWND hwnd
)
163 return GetWindowLongPtrW( hwnd
, STATE_GWL_OFFSET
);
166 static inline void set_button_state( HWND hwnd
, LONG state
)
168 SetWindowLongPtrW( hwnd
, STATE_GWL_OFFSET
, state
);
173 static __inline
void set_ui_state( HWND hwnd
, LONG flags
)
175 SetWindowLongPtrW( hwnd
, UISTATE_GWL_OFFSET
, flags
);
178 static __inline LONG
get_ui_state( HWND hwnd
)
180 return GetWindowLongPtrW( hwnd
, UISTATE_GWL_OFFSET
);
183 #endif /* __REACTOS__ */
186 #define NtUserAlterWindowStyle SetWindowLongPtrW
188 HRGN
set_control_clipping( HDC hdc
, const RECT
*rect
)
191 HRGN hrgn
= CreateRectRgn( 0, 0, 0, 0 );
193 if (GetClipRgn( hdc
, hrgn
) != 1)
195 DeleteObject( hrgn
);
198 DPtoLP( hdc
, (POINT
*)&rc
, 2 );
199 if (GetLayout( hdc
) & LAYOUT_RTL
) /* compensate for the shifting done by IntersectClipRect */
204 IntersectClipRect( hdc
, rc
.left
, rc
.top
, rc
.right
, rc
.bottom
);
208 BOOL
BUTTON_Paint(HTHEME theme
, HWND hwnd
, HDC hParamDC
, UINT action
);
212 static inline HFONT
get_button_font( HWND hwnd
)
214 return (HFONT
)GetWindowLongPtrW( hwnd
, HFONT_GWL_OFFSET
);
217 static inline void set_button_font( HWND hwnd
, HFONT font
)
219 SetWindowLongPtrW( hwnd
, HFONT_GWL_OFFSET
, (LONG_PTR
)font
);
222 static inline UINT
get_button_type( LONG window_style
)
224 return (window_style
& BS_TYPEMASK
);
227 /* paint a button of any type */
228 static inline void paint_button( HWND hwnd
, LONG style
, UINT action
)
230 if (btnPaintFunc
[style
] && IsWindowVisible(hwnd
))
232 HDC hdc
= GetDC( hwnd
);
233 btnPaintFunc
[style
]( hwnd
, hdc
, action
);
234 ReleaseDC( hwnd
, hdc
);
238 /* retrieve the button text; returned buffer must be freed by caller */
239 static inline WCHAR
*get_button_text( HWND hwnd
)
242 WCHAR
*buffer
= HeapAlloc( GetProcessHeap(), 0, (len
+ 1) * sizeof(WCHAR
) );
243 if (buffer
) InternalGetWindowText( hwnd
, buffer
, len
+ 1 );
248 /* Retrieve the UI state for the control */
249 static BOOL
button_update_uistate(HWND hwnd
, BOOL unicode
)
251 LONG flags
, prevflags
;
254 flags
= DefWindowProcW(hwnd
, WM_QUERYUISTATE
, 0, 0);
256 flags
= DefWindowProcA(hwnd
, WM_QUERYUISTATE
, 0, 0);
258 prevflags
= get_ui_state(hwnd
);
260 if (prevflags
!= flags
)
262 set_ui_state(hwnd
, flags
);
270 /***********************************************************************
271 * ButtonWndProc_common
273 LRESULT WINAPI
ButtonWndProc_common(HWND hWnd
, UINT uMsg
,
274 WPARAM wParam
, LPARAM lParam
, BOOL unicode
)
278 LONG style
= GetWindowLongPtrW( hWnd
, GWL_STYLE
);
279 UINT btn_type
= get_button_type( style
);
282 #if defined(__REACTOS__) && defined(_USER32_)
285 pWnd
= ValidateHwnd(hWnd
);
290 NtUserSetWindowFNID(hWnd
, FNID_BUTTON
);
294 if (pWnd
->fnid
!= FNID_BUTTON
)
296 ERR("Wrong window class for Button! fnId 0x%x\n",pWnd
->fnid
);
304 if (!IsWindow( hWnd
)) return 0;
307 pt
.x
= (short)LOWORD(lParam
);
308 pt
.y
= (short)HIWORD(lParam
);
316 case BS_PUSHBUTTON
: return DLGC_BUTTON
| DLGC_UNDEFPUSHBUTTON
;
317 case BS_DEFPUSHBUTTON
: return DLGC_BUTTON
| DLGC_DEFPUSHBUTTON
;
319 case BS_AUTORADIOBUTTON
: return DLGC_BUTTON
| DLGC_RADIOBUTTON
;
320 case BS_GROUPBOX
: return DLGC_STATIC
;
321 default: return DLGC_BUTTON
;
325 paint_button( hWnd
, btn_type
, ODA_DRAWENTIRE
);
329 if (btn_type
>= MAX_BTN_TYPE
)
330 return -1; /* abort */
332 /* XP turns a BS_USERBUTTON into BS_PUSHBUTTON */
333 if (btn_type
== BS_USERBUTTON
)
335 style
= (style
& ~BS_TYPEMASK
) | BS_PUSHBUTTON
;
337 NtUserAlterWindowStyle(hWnd
, GWL_STYLE
, style
);
339 WIN_SetStyle( hWnd
, style
, BS_TYPEMASK
& ~style
);
342 set_button_state( hWnd
, BST_UNCHECKED
);
344 button_update_uistate( hWnd
, unicode
);
348 #if defined(__REACTOS__) && defined(_USER32_)
350 NtUserSetWindowFNID(hWnd
, FNID_DESTROY
);
356 if (btn_type
== BS_OWNERDRAW
)
358 HDC hdc
= (HDC
)wParam
;
361 HWND parent
= GetParent(hWnd
);
362 if (!parent
) parent
= hWnd
;
363 #if defined(__REACTOS__) && defined(_USER32_)
364 hBrush
= GetControlColor( parent
, hWnd
, hdc
, WM_CTLCOLORBTN
);
366 hBrush
= (HBRUSH
)SendMessageW(parent
, WM_CTLCOLORBTN
, (WPARAM
)hdc
, (LPARAM
)hWnd
);
367 if (!hBrush
) /* did the app forget to call defwindowproc ? */
368 hBrush
= (HBRUSH
)DefWindowProcW(parent
, WM_CTLCOLORBTN
,
369 (WPARAM
)hdc
, (LPARAM
)hWnd
);
371 GetClientRect(hWnd
, &rc
);
372 FillRect(hdc
, &rc
, hBrush
);
380 HDC hdc
= wParam
? (HDC
)wParam
: BeginPaint( hWnd
, &ps
);
381 if (btnPaintFunc
[btn_type
])
383 int nOldMode
= SetBkMode( hdc
, OPAQUE
);
384 (btnPaintFunc
[btn_type
])( hWnd
, hdc
, ODA_DRAWENTIRE
);
385 SetBkMode(hdc
, nOldMode
); /* reset painting mode */
387 if ( !wParam
) EndPaint( hWnd
, &ps
);
392 if (wParam
== VK_SPACE
)
394 SendMessageW( hWnd
, BM_SETSTATE
, TRUE
, 0 );
395 set_button_state( hWnd
, get_button_state( hWnd
) | BUTTON_BTNPRESSED
);
400 case WM_LBUTTONDBLCLK
:
401 if(style
& BS_NOTIFY
||
402 btn_type
== BS_RADIOBUTTON
||
403 btn_type
== BS_USERBUTTON
||
404 btn_type
== BS_OWNERDRAW
)
406 BUTTON_NOTIFY_PARENT(hWnd
, BN_DOUBLECLICKED
);
413 set_button_state( hWnd
, get_button_state( hWnd
) | BUTTON_BTNPRESSED
);
414 SendMessageW( hWnd
, BM_SETSTATE
, TRUE
, 0 );
418 if (wParam
!= VK_SPACE
)
423 BOOL TellParent
= FALSE
; //// ReactOS see note below.
425 state
= get_button_state( hWnd
);
426 if (!(state
& BUTTON_BTNPRESSED
)) break;
427 state
&= BUTTON_NSTATES
;
428 set_button_state( hWnd
, state
);
429 if (!(state
& BST_PUSHED
))
434 SendMessageW( hWnd
, BM_SETSTATE
, FALSE
, 0 );
435 GetClientRect( hWnd
, &rect
);
436 if (uMsg
== WM_KEYUP
|| PtInRect( &rect
, pt
))
438 state
= get_button_state( hWnd
);
441 case BS_AUTOCHECKBOX
:
442 SendMessageW( hWnd
, BM_SETCHECK
, !(state
& BST_CHECKED
), 0 );
444 case BS_AUTORADIOBUTTON
:
445 SendMessageW( hWnd
, BM_SETCHECK
, TRUE
, 0 );
448 SendMessageW( hWnd
, BM_SETCHECK
,
449 (state
& BST_INDETERMINATE
) ? 0 : ((state
& 3) + 1), 0 );
453 TellParent
= TRUE
; // <---- Fix CORE-10194, Notify parent after capture is released.
456 BUTTON_NOTIFY_PARENT(hWnd
, BN_CLICKED
);
461 if (TellParent
) BUTTON_NOTIFY_PARENT(hWnd
, BN_CLICKED
);
470 case WM_CAPTURECHANGED
:
471 TRACE("WM_CAPTURECHANGED %p\n", hWnd
);
472 if (hWnd
== (HWND
)lParam
) break;
473 state
= get_button_state( hWnd
);
474 if (state
& BUTTON_BTNPRESSED
)
476 state
&= BUTTON_NSTATES
;
477 set_button_state( hWnd
, state
);
478 if (state
& BST_PUSHED
) SendMessageW( hWnd
, BM_SETSTATE
, FALSE
, 0 );
483 if ((wParam
& MK_LBUTTON
) && GetCapture() == hWnd
)
485 GetClientRect( hWnd
, &rect
);
486 SendMessageW( hWnd
, BM_SETSTATE
, PtInRect(&rect
, pt
), 0 );
492 /* Clear an old text here as Windows does */
495 // wine Bug: http://bugs.winehq.org/show_bug.cgi?id=25790
496 // Patch: http://source.winehq.org/patches/data/70889
497 // By: Alexander LAW, Replicate Windows behavior of WM_SETTEXT handler regarding WM_CTLCOLOR*
500 if (style
& WS_VISIBLE
)
502 if (IsWindowVisible(hWnd
))
505 HDC hdc
= GetDC(hWnd
);
508 HWND parent
= GetParent(hWnd
);
509 UINT message
= (btn_type
== BS_PUSHBUTTON
||
510 btn_type
== BS_DEFPUSHBUTTON
||
511 btn_type
== BS_PUSHLIKE
||
512 btn_type
== BS_USERBUTTON
||
513 btn_type
== BS_OWNERDRAW
) ?
514 WM_CTLCOLORBTN
: WM_CTLCOLORSTATIC
;
516 if (!parent
) parent
= hWnd
;
517 #if defined(__REACTOS__) && defined(_USER32_)
518 hbrush
= GetControlColor(parent
, hWnd
, hdc
, message
);
520 hbrush
= (HBRUSH
)SendMessageW(parent
, message
,
521 (WPARAM
)hdc
, (LPARAM
)hWnd
);
522 if (!hbrush
) /* did the app forget to call DefWindowProc ? */
523 hbrush
= (HBRUSH
)DefWindowProcW(parent
, message
,
524 (WPARAM
)hdc
, (LPARAM
)hWnd
);
527 GetClientRect(hWnd
, &client
);
529 /* FIXME: check other BS_* handlers */
530 if (btn_type
== BS_GROUPBOX
)
531 InflateRect(&rc
, -7, 1); /* GB_Paint does this */
532 BUTTON_CalcLabelRect(hWnd
, hdc
, &rc
);
533 /* Clip by client rect bounds */
534 if (rc
.right
> client
.right
) rc
.right
= client
.right
;
535 if (rc
.bottom
> client
.bottom
) rc
.bottom
= client
.bottom
;
536 FillRect(hdc
, &rc
, hbrush
);
537 ReleaseDC(hWnd
, hdc
);
540 if (unicode
) DefWindowProcW( hWnd
, WM_SETTEXT
, wParam
, lParam
);
541 else DefWindowProcA( hWnd
, WM_SETTEXT
, wParam
, lParam
);
542 if (btn_type
== BS_GROUPBOX
) /* Yes, only for BS_GROUPBOX */
543 InvalidateRect( hWnd
, NULL
, TRUE
);
545 paint_button( hWnd
, btn_type
, ODA_DRAWENTIRE
);
546 return 1; /* success. FIXME: check text length */
550 set_button_font( hWnd
, (HFONT
)wParam
);
551 if (lParam
) InvalidateRect(hWnd
, NULL
, TRUE
);
555 return (LRESULT
)get_button_font( hWnd
);
558 TRACE("WM_SETFOCUS %p\n",hWnd
);
559 set_button_state( hWnd
, get_button_state(hWnd
) | BST_FOCUS
);
560 paint_button( hWnd
, btn_type
, ODA_FOCUS
);
561 if (style
& BS_NOTIFY
)
562 BUTTON_NOTIFY_PARENT(hWnd
, BN_SETFOCUS
);
566 TRACE("WM_KILLFOCUS %p\n",hWnd
);
567 state
= get_button_state( hWnd
);
568 set_button_state( hWnd
, state
& ~BST_FOCUS
);
569 paint_button( hWnd
, btn_type
, ODA_FOCUS
);
571 if ((state
& BUTTON_BTNPRESSED
) && GetCapture() == hWnd
)
573 if (style
& BS_NOTIFY
)
574 BUTTON_NOTIFY_PARENT(hWnd
, BN_KILLFOCUS
);
576 InvalidateRect( hWnd
, NULL
, FALSE
);
579 case WM_SYSCOLORCHANGE
:
580 InvalidateRect( hWnd
, NULL
, FALSE
);
584 btn_type
= wParam
& BS_TYPEMASK
;
585 style
= (style
& ~BS_TYPEMASK
) | btn_type
;
587 NtUserAlterWindowStyle(hWnd
, GWL_STYLE
, style
);
589 WIN_SetStyle( hWnd
, style
, BS_TYPEMASK
& ~style
);
592 /* Only redraw if lParam flag is set.*/
594 InvalidateRect( hWnd
, NULL
, TRUE
);
600 state
= get_button_state(hWnd
);
601 if (state
& BUTTON_BMCLICK
)
603 set_button_state(hWnd
, state
| BUTTON_BMCLICK
); // Tracked in STATE_GWL_OFFSET.
605 SendMessageW( hWnd
, WM_LBUTTONDOWN
, 0, 0 );
606 SendMessageW( hWnd
, WM_LBUTTONUP
, 0, 0 );
608 state
= get_button_state(hWnd
);
609 if (!(state
& BUTTON_BMCLICK
)) break;
610 state
&= ~BUTTON_BMCLICK
;
611 set_button_state(hWnd
, state
);
616 /* Check that image format matches button style */
617 switch (style
& (BS_BITMAP
|BS_ICON
))
620 if (wParam
!= IMAGE_BITMAP
) return 0;
623 if (wParam
!= IMAGE_ICON
) return 0;
628 oldHbitmap
= (HBITMAP
)SetWindowLongPtrW( hWnd
, HIMAGE_GWL_OFFSET
, lParam
);
629 InvalidateRect( hWnd
, NULL
, FALSE
);
630 return (LRESULT
)oldHbitmap
;
633 return GetWindowLongPtrW( hWnd
, HIMAGE_GWL_OFFSET
);
636 return get_button_state( hWnd
) & 3;
639 if (wParam
> maxCheckState
[btn_type
]) wParam
= maxCheckState
[btn_type
];
640 state
= get_button_state( hWnd
);
641 if ((btn_type
== BS_RADIOBUTTON
) || (btn_type
== BS_AUTORADIOBUTTON
))
644 if (wParam
) style
|= WS_TABSTOP
;
645 else style
&= ~WS_TABSTOP
;
646 NtUserAlterWindowStyle(hWnd
, GWL_STYLE
, style
);
648 if (wParam
) WIN_SetStyle( hWnd
, WS_TABSTOP
, 0 );
649 else WIN_SetStyle( hWnd
, 0, WS_TABSTOP
);
652 if ((state
& 3) != wParam
)
654 set_button_state( hWnd
, (state
& ~3) | wParam
);
655 paint_button( hWnd
, btn_type
, ODA_SELECT
);
657 if ((btn_type
== BS_AUTORADIOBUTTON
) && (wParam
== BST_CHECKED
) && (style
& WS_CHILD
))
658 BUTTON_CheckAutoRadioButton( hWnd
);
662 return get_button_state( hWnd
);
665 state
= get_button_state( hWnd
);
667 set_button_state( hWnd
, state
| BST_PUSHED
);
669 set_button_state( hWnd
, state
& ~BST_PUSHED
);
671 paint_button( hWnd
, btn_type
, ODA_SELECT
);
675 case WM_UPDATEUISTATE
:
677 DefWindowProcW(hWnd
, uMsg
, wParam
, lParam
);
679 DefWindowProcA(hWnd
, uMsg
, wParam
, lParam
);
681 if (button_update_uistate(hWnd
, unicode
))
682 paint_button( hWnd
, btn_type
, ODA_DRAWENTIRE
);
687 if(btn_type
== BS_GROUPBOX
) return HTTRANSPARENT
;
690 return unicode
? DefWindowProcW(hWnd
, uMsg
, wParam
, lParam
) :
691 DefWindowProcA(hWnd
, uMsg
, wParam
, lParam
);
698 /***********************************************************************
700 * The button window procedure. This is just a wrapper which locks
701 * the passed HWND and calls the real window procedure (with a WND*
702 * pointer pointing to the locked windowstructure).
704 LRESULT WINAPI
ButtonWndProcW(HWND hWnd
, UINT uMsg
, WPARAM wParam
, LPARAM lParam
)
706 if (!IsWindow(hWnd
)) return 0;
707 return ButtonWndProc_common(hWnd
, uMsg
, wParam
, lParam
, TRUE
);
710 /***********************************************************************
713 LRESULT WINAPI
ButtonWndProcA(HWND hWnd
, UINT uMsg
, WPARAM wParam
, LPARAM lParam
)
715 if (!IsWindow(hWnd
)) return 0;
716 return ButtonWndProc_common(hWnd
, uMsg
, wParam
, lParam
, FALSE
);
719 #endif /* __REACTOS__ */
721 /**********************************************************************
722 * Convert button styles to flags used by DrawText.
724 static UINT
BUTTON_BStoDT( DWORD style
, DWORD ex_style
)
726 UINT dtStyle
= DT_NOCLIP
; /* We use SelectClipRgn to limit output */
728 /* "Convert" pushlike buttons to pushbuttons */
729 if (style
& BS_PUSHLIKE
)
730 style
&= ~BS_TYPEMASK
;
732 if (!(style
& BS_MULTILINE
))
733 dtStyle
|= DT_SINGLELINE
;
735 dtStyle
|= DT_WORDBREAK
;
737 switch (style
& BS_CENTER
)
739 case BS_LEFT
: /* DT_LEFT is 0 */ break;
740 case BS_RIGHT
: dtStyle
|= DT_RIGHT
; break;
741 case BS_CENTER
: dtStyle
|= DT_CENTER
; break;
743 /* Pushbutton's text is centered by default */
744 if (get_button_type(style
) <= BS_DEFPUSHBUTTON
) dtStyle
|= DT_CENTER
;
745 /* all other flavours have left aligned text */
748 if (ex_style
& WS_EX_RIGHT
) dtStyle
= DT_RIGHT
| (dtStyle
& ~(DT_LEFT
| DT_CENTER
));
750 /* DrawText ignores vertical alignment for multiline text,
751 * but we use these flags to align label manually.
753 if (get_button_type(style
) != BS_GROUPBOX
)
755 switch (style
& BS_VCENTER
)
757 case BS_TOP
: /* DT_TOP is 0 */ break;
758 case BS_BOTTOM
: dtStyle
|= DT_BOTTOM
; break;
759 case BS_VCENTER
: /* fall through */
760 default: dtStyle
|= DT_VCENTER
; break;
764 /* GroupBox's text is always single line and is top aligned. */
765 dtStyle
|= DT_SINGLELINE
;
770 /**********************************************************************
771 * BUTTON_CalcLabelRect
773 * Calculates label's rectangle depending on button style.
775 * Returns flags to be passed to DrawText.
776 * Calculated rectangle doesn't take into account button state
777 * (pushed, etc.). If there is nothing to draw (no text/image) output
778 * rectangle is empty, and return value is (UINT)-1.
780 static UINT
BUTTON_CalcLabelRect(HWND hwnd
, HDC hdc
, RECT
*rc
)
782 LONG style
= GetWindowLongPtrW( hwnd
, GWL_STYLE
);
783 LONG ex_style
= GetWindowLongPtrW( hwnd
, GWL_EXSTYLE
);
787 UINT dtStyle
= BUTTON_BStoDT( style
, ex_style
);
791 /* Calculate label rectangle according to label type */
792 switch (style
& (BS_ICON
|BS_BITMAP
))
796 HFONT hFont
, hPrevFont
= 0;
798 if (!(text
= get_button_text( hwnd
))) goto empty_rect
;
801 HeapFree( GetProcessHeap(), 0, text
);
805 if ((hFont
= get_button_font( hwnd
))) hPrevFont
= SelectObject( hdc
, hFont
);
806 DrawTextW(hdc
, text
, -1, &r
, dtStyle
| DT_CALCRECT
);
807 if (hPrevFont
) SelectObject( hdc
, hPrevFont
);
808 HeapFree( GetProcessHeap(), 0, text
);
810 if (get_ui_state(hwnd
) & UISF_HIDEACCEL
)
811 dtStyle
|= DT_HIDEPREFIX
;
817 if (!GetIconInfo((HICON
)GetWindowLongPtrW( hwnd
, HIMAGE_GWL_OFFSET
), &iconInfo
))
820 GetObjectW (iconInfo
.hbmColor
, sizeof(BITMAP
), &bm
);
822 r
.right
= r
.left
+ bm
.bmWidth
;
823 r
.bottom
= r
.top
+ bm
.bmHeight
;
825 DeleteObject(iconInfo
.hbmColor
);
826 DeleteObject(iconInfo
.hbmMask
);
830 if (!GetObjectW( (HANDLE
)GetWindowLongPtrW( hwnd
, HIMAGE_GWL_OFFSET
), sizeof(BITMAP
), &bm
))
833 r
.right
= r
.left
+ bm
.bmWidth
;
834 r
.bottom
= r
.top
+ bm
.bmHeight
;
844 /* Position label inside bounding rectangle according to
845 * alignment flags. (calculated rect is always left-top aligned).
846 * If label is aligned to any side - shift label in opposite
847 * direction to leave extra space for focus rectangle.
849 switch (dtStyle
& (DT_CENTER
|DT_RIGHT
))
851 case DT_LEFT
: r
.left
++; r
.right
++; break;
852 case DT_CENTER
: n
= r
.right
- r
.left
;
853 r
.left
= rc
->left
+ ((rc
->right
- rc
->left
) - n
) / 2;
854 r
.right
= r
.left
+ n
; break;
855 case DT_RIGHT
: n
= r
.right
- r
.left
;
856 r
.right
= rc
->right
- 1;
857 r
.left
= r
.right
- n
;
861 switch (dtStyle
& (DT_VCENTER
|DT_BOTTOM
))
863 case DT_TOP
: r
.top
++; r
.bottom
++; break;
864 case DT_VCENTER
: n
= r
.bottom
- r
.top
;
865 r
.top
= rc
->top
+ ((rc
->bottom
- rc
->top
) - n
) / 2;
866 r
.bottom
= r
.top
+ n
; break;
867 case DT_BOTTOM
: n
= r
.bottom
- r
.top
;
868 r
.bottom
= rc
->bottom
- 1;
869 r
.top
= r
.bottom
- n
;
878 /**********************************************************************
879 * BUTTON_DrawTextCallback
881 * Callback function used by DrawStateW function.
883 static BOOL CALLBACK
BUTTON_DrawTextCallback(HDC hdc
, LPARAM lp
, WPARAM wp
, int cx
, int cy
)
887 SetRect(&rc
, 0, 0, cx
, cy
);
888 DrawTextW(hdc
, (LPCWSTR
)lp
, -1, &rc
, (UINT
)wp
);
893 /**********************************************************************
896 * Common function for drawing button label.
898 static void BUTTON_DrawLabel(HWND hwnd
, HDC hdc
, UINT dtFlags
, const RECT
*rc
)
900 DRAWSTATEPROC lpOutputProc
= NULL
;
904 UINT flags
= IsWindowEnabled(hwnd
) ? DSS_NORMAL
: DSS_DISABLED
;
905 LONG state
= get_button_state( hwnd
);
906 LONG style
= GetWindowLongPtrW( hwnd
, GWL_STYLE
);
909 /* FIXME: To draw disabled label in Win31 look-and-feel, we probably
910 * must use DSS_MONO flag and COLOR_GRAYTEXT brush (or maybe DSS_UNION).
911 * I don't have Win31 on hand to verify that, so I leave it as is.
914 if ((style
& BS_PUSHLIKE
) && (state
& BST_INDETERMINATE
))
916 hbr
= GetSysColorBrush(COLOR_GRAYTEXT
);
920 switch (style
& (BS_ICON
|BS_BITMAP
))
923 /* DST_COMPLEX -- is 0 */
924 lpOutputProc
= BUTTON_DrawTextCallback
;
925 if (!(text
= get_button_text( hwnd
))) return;
927 wp
= (WPARAM
)dtFlags
;
930 if (dtFlags
& DT_HIDEPREFIX
)
931 flags
|= DSS_HIDEPREFIX
;
937 lp
= GetWindowLongPtrW( hwnd
, HIMAGE_GWL_OFFSET
);
942 lp
= GetWindowLongPtrW( hwnd
, HIMAGE_GWL_OFFSET
);
949 DrawStateW(hdc
, hbr
, lpOutputProc
, lp
, wp
, rc
->left
, rc
->top
,
950 rc
->right
- rc
->left
, rc
->bottom
- rc
->top
, flags
);
951 HeapFree( GetProcessHeap(), 0, text
);
954 /**********************************************************************
955 * Push Button Functions
957 static void PB_Paint( HWND hwnd
, HDC hDC
, UINT action
)
960 UINT dtFlags
, uState
;
964 COLORREF oldTxtColor
;
966 LONG state
= get_button_state( hwnd
);
967 LONG style
= GetWindowLongPtrW( hwnd
, GWL_STYLE
);
968 BOOL pushedState
= (state
& BST_PUSHED
);
972 GetClientRect( hwnd
, &rc
);
974 /* Send WM_CTLCOLOR to allow changing the font (the colors are fixed) */
975 if ((hFont
= get_button_font( hwnd
))) SelectObject( hDC
, hFont
);
976 parent
= GetParent(hwnd
);
977 if (!parent
) parent
= hwnd
;
978 #if defined(__REACTOS__) && defined(_USER32_)
979 GetControlColor( parent
, hwnd
, hDC
, WM_CTLCOLORBTN
);
981 SendMessageW( parent
, WM_CTLCOLORBTN
, (WPARAM
)hDC
, (LPARAM
)hwnd
);
984 hrgn
= set_control_clipping( hDC
, &rc
);
986 hOldPen
= SelectObject(hDC
, GetStockObject(DC_PEN
));
987 SetDCPenColor(hDC
, GetSysColor(COLOR_WINDOWFRAME
));
989 hOldPen
= SelectObject(hDC
, SYSCOLOR_GetPen(COLOR_WINDOWFRAME
));
991 hOldBrush
= SelectObject(hDC
,GetSysColorBrush(COLOR_BTNFACE
));
992 oldBkMode
= SetBkMode(hDC
, TRANSPARENT
);
994 if (get_button_type(style
) == BS_DEFPUSHBUTTON
)
996 if (action
!= ODA_FOCUS
)
997 Rectangle(hDC
, rc
.left
, rc
.top
, rc
.right
, rc
.bottom
);
998 InflateRect( &rc
, -1, -1 );
1001 /* completely skip the drawing if only focus has changed */
1002 if (action
== ODA_FOCUS
) goto draw_focus
;
1004 uState
= DFCS_BUTTONPUSH
;
1006 if (style
& BS_FLAT
)
1007 uState
|= DFCS_MONO
;
1008 else if (pushedState
)
1010 if (get_button_type(style
) == BS_DEFPUSHBUTTON
)
1011 uState
|= DFCS_FLAT
;
1013 uState
|= DFCS_PUSHED
;
1016 if (state
& (BST_CHECKED
| BST_INDETERMINATE
))
1017 uState
|= DFCS_CHECKED
;
1019 DrawFrameControl( hDC
, &rc
, DFC_BUTTON
, uState
);
1021 /* draw button label */
1023 dtFlags
= BUTTON_CalcLabelRect(hwnd
, hDC
, &r
);
1025 if (dtFlags
== (UINT
)-1L)
1029 OffsetRect(&r
, 1, 1);
1031 oldTxtColor
= SetTextColor( hDC
, GetSysColor(COLOR_BTNTEXT
) );
1033 BUTTON_DrawLabel(hwnd
, hDC
, dtFlags
, &r
);
1035 SetTextColor( hDC
, oldTxtColor
);
1038 if (action
== ODA_FOCUS
|| (state
& BST_FOCUS
))
1041 if (!(get_ui_state(hwnd
) & UISF_HIDEFOCUS
))
1044 InflateRect( &rc
, -2, -2 );
1045 DrawFocusRect( hDC
, &rc
);
1052 SelectObject( hDC
, hOldPen
);
1053 SelectObject( hDC
, hOldBrush
);
1054 SetBkMode(hDC
, oldBkMode
);
1055 SelectClipRgn( hDC
, hrgn
);
1056 if (hrgn
) DeleteObject( hrgn
);
1059 /**********************************************************************
1060 * Check Box & Radio Button Functions
1063 static void CB_Paint( HWND hwnd
, HDC hDC
, UINT action
)
1065 RECT rbox
, rtext
, client
;
1067 int delta
, text_offset
, checkBoxWidth
, checkBoxHeight
;
1070 LONG state
= get_button_state( hwnd
);
1071 LONG style
= GetWindowLongPtrW( hwnd
, GWL_STYLE
);
1072 LONG ex_style
= GetWindowLongW( hwnd
, GWL_EXSTYLE
);
1076 if (style
& BS_PUSHLIKE
)
1078 PB_Paint( hwnd
, hDC
, action
);
1082 GetClientRect(hwnd
, &client
);
1083 rbox
= rtext
= client
;
1085 checkBoxWidth
= 12 * GetDeviceCaps( hDC
, LOGPIXELSX
) / 96 + 1;
1086 checkBoxHeight
= 12 * GetDeviceCaps( hDC
, LOGPIXELSY
) / 96 + 1;
1088 if ((hFont
= get_button_font( hwnd
))) SelectObject( hDC
, hFont
);
1089 GetCharWidthW( hDC
, '0', '0', &text_offset
);
1092 parent
= GetParent(hwnd
);
1093 if (!parent
) parent
= hwnd
;
1094 #if defined(__REACTOS__) && defined(_USER32_)
1095 hBrush
= GetControlColor(parent
, hwnd
, hDC
, WM_CTLCOLORSTATIC
);
1097 hBrush
= (HBRUSH
)SendMessageW(parent
, WM_CTLCOLORSTATIC
,
1098 (WPARAM
)hDC
, (LPARAM
)hwnd
);
1099 if (!hBrush
) /* did the app forget to call defwindowproc ? */
1100 hBrush
= (HBRUSH
)DefWindowProcW(parent
, WM_CTLCOLORSTATIC
,
1101 (WPARAM
)hDC
, (LPARAM
)hwnd
);
1103 hrgn
= set_control_clipping( hDC
, &client
);
1105 if (style
& BS_LEFTTEXT
|| ex_style
& WS_EX_RIGHT
)
1107 /* magic +4 is what CTL3D expects */
1109 rtext
.right
-= checkBoxWidth
+ text_offset
;;
1110 rbox
.left
= rbox
.right
- checkBoxWidth
;
1114 rtext
.left
+= checkBoxWidth
+ text_offset
;;
1115 rbox
.right
= checkBoxWidth
;
1118 /* Since WM_ERASEBKGND does nothing, first prepare background */
1119 if (action
== ODA_SELECT
) FillRect( hDC
, &rbox
, hBrush
);
1120 if (action
== ODA_DRAWENTIRE
) FillRect( hDC
, &client
, hBrush
);
1124 dtFlags
= BUTTON_CalcLabelRect(hwnd
, hDC
, &rtext
);
1126 /* Only adjust rbox when rtext is valid */
1127 if (dtFlags
!= (UINT
)-1L)
1129 rbox
.top
= rtext
.top
;
1130 rbox
.bottom
= rtext
.bottom
;
1133 /* Draw the check-box bitmap */
1134 if (action
== ODA_DRAWENTIRE
|| action
== ODA_SELECT
)
1138 if ((get_button_type(style
) == BS_RADIOBUTTON
) ||
1139 (get_button_type(style
) == BS_AUTORADIOBUTTON
)) flags
= DFCS_BUTTONRADIO
;
1140 else if (state
& BST_INDETERMINATE
) flags
= DFCS_BUTTON3STATE
;
1141 else flags
= DFCS_BUTTONCHECK
;
1143 if (state
& (BST_CHECKED
| BST_INDETERMINATE
)) flags
|= DFCS_CHECKED
;
1144 if (state
& BST_PUSHED
) flags
|= DFCS_PUSHED
;
1146 if (style
& WS_DISABLED
) flags
|= DFCS_INACTIVE
;
1148 /* rbox must have the correct height */
1149 delta
= rbox
.bottom
- rbox
.top
- checkBoxHeight
;
1151 if (style
& BS_TOP
) {
1153 rbox
.bottom
= rbox
.top
+ checkBoxHeight
;
1155 rbox
.top
-= -delta
/2 + 1;
1156 rbox
.bottom
= rbox
.top
+ checkBoxHeight
;
1158 } else if (style
& BS_BOTTOM
) {
1160 rbox
.top
= rbox
.bottom
- checkBoxHeight
;
1162 rbox
.bottom
+= -delta
/2 + 1;
1163 rbox
.top
= rbox
.bottom
- checkBoxHeight
;
1165 } else { /* Default */
1167 int ofs
= (delta
/ 2);
1168 rbox
.bottom
-= ofs
+ 1;
1169 rbox
.top
= rbox
.bottom
- checkBoxHeight
;
1170 } else if (delta
< 0) {
1171 int ofs
= (-delta
/ 2);
1172 rbox
.top
-= ofs
+ 1;
1173 rbox
.bottom
= rbox
.top
+ checkBoxHeight
;
1177 DrawFrameControl( hDC
, &rbox
, DFC_BUTTON
, flags
);
1180 if (dtFlags
== (UINT
)-1L) /* Noting to draw */
1183 if (action
== ODA_DRAWENTIRE
)
1184 BUTTON_DrawLabel(hwnd
, hDC
, dtFlags
, &rtext
);
1187 if (action
== ODA_FOCUS
|| (state
& BST_FOCUS
))
1190 if (!(get_ui_state(hwnd
) & UISF_HIDEFOCUS
))
1195 IntersectRect(&rtext
, &rtext
, &client
);
1196 DrawFocusRect( hDC
, &rtext
);
1201 SelectClipRgn( hDC
, hrgn
);
1202 if (hrgn
) DeleteObject( hrgn
);
1206 /**********************************************************************
1207 * BUTTON_CheckAutoRadioButton
1209 * hwnd is checked, uncheck every other auto radio button in group
1211 static void BUTTON_CheckAutoRadioButton( HWND hwnd
)
1213 HWND parent
, sibling
, start
;
1215 parent
= GetParent(hwnd
);
1216 /* make sure that starting control is not disabled or invisible */
1217 start
= sibling
= GetNextDlgGroupItem( parent
, hwnd
, TRUE
);
1220 if (!sibling
) break;
1221 if ((hwnd
!= sibling
) &&
1222 ((GetWindowLongPtrW( sibling
, GWL_STYLE
) & BS_TYPEMASK
) == BS_AUTORADIOBUTTON
))
1223 SendMessageW( sibling
, BM_SETCHECK
, BST_UNCHECKED
, 0 );
1224 sibling
= GetNextDlgGroupItem( parent
, sibling
, FALSE
);
1225 } while (sibling
!= start
);
1229 /**********************************************************************
1230 * Group Box Functions
1233 static void GB_Paint( HWND hwnd
, HDC hDC
, UINT action
)
1240 LONG style
= GetWindowLongPtrW( hwnd
, GWL_STYLE
);
1244 if ((hFont
= get_button_font( hwnd
))) SelectObject( hDC
, hFont
);
1245 /* GroupBox acts like static control, so it sends CTLCOLORSTATIC */
1246 parent
= GetParent(hwnd
);
1247 if (!parent
) parent
= hwnd
;
1248 #if defined(__REACTOS__) && defined(_USER32_)
1249 hbr
= GetControlColor(parent
, hwnd
, hDC
, WM_CTLCOLORSTATIC
);
1251 hbr
= (HBRUSH
)SendMessageW(parent
, WM_CTLCOLORSTATIC
, (WPARAM
)hDC
, (LPARAM
)hwnd
);
1252 if (!hbr
) /* did the app forget to call defwindowproc ? */
1253 hbr
= (HBRUSH
)DefWindowProcW(parent
, WM_CTLCOLORSTATIC
,
1254 (WPARAM
)hDC
, (LPARAM
)hwnd
);
1256 GetClientRect( hwnd
, &rc
);
1258 hrgn
= set_control_clipping( hDC
, &rc
);
1260 GetTextMetricsW (hDC
, &tm
);
1261 rcFrame
.top
+= (tm
.tmHeight
/ 2) - 1;
1262 DrawEdge (hDC
, &rcFrame
, EDGE_ETCHED
, BF_RECT
| ((style
& BS_FLAT
) ? BF_FLAT
: 0));
1264 InflateRect(&rc
, -7, 1);
1265 dtFlags
= BUTTON_CalcLabelRect(hwnd
, hDC
, &rc
);
1267 if (dtFlags
!= (UINT
)-1L)
1269 /* Because buttons have CS_PARENTDC class style, there is a chance
1270 * that label will be drawn out of client rect.
1271 * But Windows doesn't clip label's rect, so do I.
1274 /* There is 1-pixel margin at the left, right, and bottom */
1275 rc
.left
--; rc
.right
++; rc
.bottom
++;
1276 FillRect(hDC
, &rc
, hbr
);
1277 rc
.left
++; rc
.right
--; rc
.bottom
--;
1279 BUTTON_DrawLabel(hwnd
, hDC
, dtFlags
, &rc
);
1281 SelectClipRgn( hDC
, hrgn
);
1282 if (hrgn
) DeleteObject( hrgn
);
1286 /**********************************************************************
1287 * User Button Functions
1290 static void UB_Paint( HWND hwnd
, HDC hDC
, UINT action
)
1295 LONG state
= get_button_state( hwnd
);
1298 GetClientRect( hwnd
, &rc
);
1300 if ((hFont
= get_button_font( hwnd
))) SelectObject( hDC
, hFont
);
1302 parent
= GetParent(hwnd
);
1303 if (!parent
) parent
= hwnd
;
1304 #if defined(__REACTOS__) && defined(_USER32_)
1305 hBrush
= GetControlColor( parent
, hwnd
, hDC
, WM_CTLCOLORBTN
);
1307 hBrush
= (HBRUSH
)SendMessageW(parent
, WM_CTLCOLORBTN
, (WPARAM
)hDC
, (LPARAM
)hwnd
);
1308 if (!hBrush
) /* did the app forget to call defwindowproc ? */
1309 hBrush
= (HBRUSH
)DefWindowProcW(parent
, WM_CTLCOLORBTN
,
1310 (WPARAM
)hDC
, (LPARAM
)hwnd
);
1313 FillRect( hDC
, &rc
, hBrush
);
1314 if (action
== ODA_FOCUS
|| (state
& BST_FOCUS
))
1317 if (!(get_ui_state(hwnd
) & UISF_HIDEFOCUS
))
1319 DrawFocusRect( hDC
, &rc
);
1327 BUTTON_NOTIFY_PARENT( hwnd
, (state
& BST_FOCUS
) ? BN_SETFOCUS
: BN_KILLFOCUS
);
1331 BUTTON_NOTIFY_PARENT( hwnd
, (state
& BST_PUSHED
) ? BN_HILITE
: BN_UNHILITE
);
1335 BUTTON_NOTIFY_PARENT( hwnd
, BN_PAINT
);
1341 /**********************************************************************
1342 * Ownerdrawn Button Functions
1345 static void OB_Paint( HWND hwnd
, HDC hDC
, UINT action
)
1347 LONG state
= get_button_state( hwnd
);
1349 LONG_PTR id
= GetWindowLongPtrW( hwnd
, GWLP_ID
);
1351 HFONT hFont
, hPrevFont
= 0;
1354 dis
.CtlType
= ODT_BUTTON
;
1357 dis
.itemAction
= action
;
1358 dis
.itemState
= ((state
& BST_FOCUS
) ? ODS_FOCUS
: 0) |
1359 ((state
& BST_PUSHED
) ? ODS_SELECTED
: 0) |
1360 (IsWindowEnabled(hwnd
) ? 0: ODS_DISABLED
);
1361 dis
.hwndItem
= hwnd
;
1364 GetClientRect( hwnd
, &dis
.rcItem
);
1366 if ((hFont
= get_button_font( hwnd
))) hPrevFont
= SelectObject( hDC
, hFont
);
1367 parent
= GetParent(hwnd
);
1368 if (!parent
) parent
= hwnd
;
1369 #if defined(__REACTOS__) && defined(_USER32_)
1370 GetControlColor( parent
, hwnd
, hDC
, WM_CTLCOLORBTN
);
1372 SendMessageW( parent
, WM_CTLCOLORBTN
, (WPARAM
)hDC
, (LPARAM
)hwnd
);
1375 hrgn
= set_control_clipping( hDC
, &dis
.rcItem
);
1377 SendMessageW( GetParent(hwnd
), WM_DRAWITEM
, id
, (LPARAM
)&dis
);
1378 if (hPrevFont
) SelectObject(hDC
, hPrevFont
);
1379 SelectClipRgn( hDC
, hrgn
);
1380 if (hrgn
) DeleteObject( hrgn
);
1384 void BUTTON_Register()
1388 ZeroMemory(&wndClass
, sizeof(WNDCLASSW
));
1389 wndClass
.style
= CS_GLOBALCLASS
| CS_DBLCLKS
| CS_VREDRAW
| CS_HREDRAW
| CS_PARENTDC
;
1390 wndClass
.lpfnWndProc
= ButtonWndProcW
;
1391 wndClass
.cbClsExtra
= 0;
1392 wndClass
.cbWndExtra
= NB_EXTRA_BYTES
;
1393 wndClass
.hCursor
= LoadCursorW(0, (LPCWSTR
)IDC_ARROW
);
1394 wndClass
.hbrBackground
= (HBRUSH
)(COLOR_BTNFACE
+ 1);
1395 wndClass
.lpszClassName
= WC_BUTTONW
;
1397 RegisterClassW(&wndClass
);
1400 void BUTTON_Unregister()
1402 UnregisterClassW(WC_BUTTONW
, NULL
);