This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_win32window.c
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2009 Sam Lantinga
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
22
23
24
25
26
27
28
29
/* we need to define it, so that raw input is included */
#if (_WIN32_WINNT < 0x0501)
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0501
#endif
30
31
32
#include "SDL_config.h"
#include "../SDL_sysvideo.h"
33
#include "../SDL_pixels_c.h"
34
35
36
37
38
39
40
#include "../../events/SDL_keyboard_c.h"
#include "SDL_win32video.h"
/* This is included after SDL_win32video.h, which includes windows.h */
#include "SDL_syswm.h"
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
#define SHFS_SHOWTASKBAR 0x0001
#define SHFS_HIDETASKBAR 0x0002
#define SHFS_SHOWSIPBUTTON 0x0004
#define SHFS_HIDESIPBUTTON 0x0008
#define SHFS_SHOWSTARTICON 0x0010
#define SHFS_HIDESTARTICON 0x0020
#ifdef _WIN32_WCE
// dynamically load aygshell dll because we want SDL to work on HPC and be300
int aygshell_loaded = 0;
BOOL(WINAPI * SHFullScreen) (HWND hwndRequester, DWORD dwState) = 0;
static BOOL
CE_SHFullScreen(HWND hwndRequester, DWORD dwState)
{
if (SHFullScreen == 0 && aygshell_loaded == 0) {
aygshell_loaded = 0;
void *lib = SDL_LoadObject("aygshell.dll");
if (lib) {
SHFullScreen =
(BOOL(WINAPI *) (HWND, DWORD)) SDL_LoadFunction(lib,
"SHFullScreen");
}
}
if (SHFullScreen) {
SHFullScreen(hwndRequester, dwState);
//printf("SHFullscreen(%i)\n",dwState);
}
}
#endif
76
extern HCTX *g_hCtx; /* the table of tablet event contexts, each windows has to have it's own tablet context */
77
static Uint32 highestId = 0; /* the highest id of the tablet context */
79
80
/* Fake window to help with DirectInput events. */
HWND SDL_HelperWindow = NULL;
81
82
static WCHAR *SDL_HelperWindowClassName = TEXT("SDLHelperWindowInputCatcher");
static WCHAR *SDL_HelperWindowName = TEXT("SDLHelperWindowInputMsgWindow");
83
84
static ATOM SDL_HelperWindowClass = 0;
86
SetupWindowData(_THIS, SDL_Window * window, HWND hwnd, SDL_bool created)
88
SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
89
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
90
91
92
93
94
95
96
97
98
99
SDL_WindowData *data;
/* Allocate the window data */
data = (SDL_WindowData *) SDL_malloc(sizeof(*data));
if (!data) {
SDL_OutOfMemory();
return -1;
}
data->windowID = window->id;
data->hwnd = hwnd;
100
data->hdc = GetDC(hwnd);
101
102
data->created = created;
data->mouse_pressed = SDL_FALSE;
103
data->videodata = videodata;
104
105
106
/* Associate the data with the window */
if (!SetProp(hwnd, TEXT("SDL_WindowData"), data)) {
107
ReleaseDC(hwnd, data->hdc);
108
109
110
111
112
113
114
SDL_free(data);
WIN_SetError("SetProp() failed");
return -1;
}
/* Set up the window proc function */
data->wndproc = (WNDPROC) GetWindowLongPtr(hwnd, GWLP_WNDPROC);
115
116
if (data->wndproc == DefWindowProc) {
data->wndproc = NULL;
118
SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR) WIN_WindowProc);
119
120
121
122
123
124
125
/* Fill in the SDL window with the window data */
{
POINT point;
point.x = 0;
point.y = 0;
if (ClientToScreen(hwnd, &point)) {
126
127
128
129
SDL_Rect bounds;
WIN_GetDisplayBounds(_this, display, &bounds);
window->x = point.x - bounds.x;
window->y = point.y - bounds.y;
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
}
}
{
RECT rect;
if (GetClientRect(hwnd, &rect)) {
window->w = rect.right;
window->h = rect.bottom;
}
}
{
DWORD style = GetWindowLong(hwnd, GWL_STYLE);
if (style & WS_VISIBLE) {
window->flags |= SDL_WINDOW_SHOWN;
} else {
window->flags &= ~SDL_WINDOW_SHOWN;
}
if (style & (WS_BORDER | WS_THICKFRAME)) {
window->flags &= ~SDL_WINDOW_BORDERLESS;
} else {
window->flags |= SDL_WINDOW_BORDERLESS;
}
if (style & WS_THICKFRAME) {
window->flags |= SDL_WINDOW_RESIZABLE;
} else {
window->flags &= ~SDL_WINDOW_RESIZABLE;
}
if (style & WS_MAXIMIZE) {
window->flags |= SDL_WINDOW_MAXIMIZED;
} else {
window->flags &= ~SDL_WINDOW_MAXIMIZED;
}
if (style & WS_MINIMIZE) {
window->flags |= SDL_WINDOW_MINIMIZED;
} else {
window->flags &= ~SDL_WINDOW_MINIMIZED;
}
}
if (GetFocus() == hwnd) {
int index = data->videodata->keyboard;
window->flags |= SDL_WINDOW_INPUT_FOCUS;
SDL_SetKeyboardFocus(index, data->windowID);
if (window->flags & SDL_WINDOW_INPUT_GRABBED) {
RECT rect;
GetClientRect(hwnd, &rect);
ClientToScreen(hwnd, (LPPOINT) & rect);
ClientToScreen(hwnd, (LPPOINT) & rect + 1);
ClipCursor(&rect);
}
}
/* All done! */
window->driverdata = data;
return 0;
}
int
WIN_CreateWindow(_THIS, SDL_Window * window)
{
189
SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
190
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
191
192
RAWINPUTDEVICE Rid;
AXIS TabX, TabY;
193
LOGCONTEXTA lc;
194
195
196
HWND hwnd;
HWND top;
RECT rect;
197
SDL_Rect bounds;
198
DWORD style = (WS_CLIPSIBLINGS | WS_CLIPCHILDREN);
199
200
201
int x, y;
int w, h;
202
if (window->flags & (SDL_WINDOW_BORDERLESS | SDL_WINDOW_FULLSCREEN)) {
203
204
205
206
style |= WS_POPUP;
} else {
style |= (WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX);
}
207
208
if ((window->flags & SDL_WINDOW_RESIZABLE)
&& !(window->flags & SDL_WINDOW_FULLSCREEN)) {
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
style |= (WS_THICKFRAME | WS_MAXIMIZEBOX);
}
/* Figure out what the window area will be */
if (window->flags & SDL_WINDOW_FULLSCREEN) {
top = HWND_TOPMOST;
} else {
top = HWND_NOTOPMOST;
}
rect.left = 0;
rect.top = 0;
rect.right = window->w;
rect.bottom = window->h;
AdjustWindowRectEx(&rect, style, FALSE, 0);
w = (rect.right - rect.left);
h = (rect.bottom - rect.top);
226
WIN_GetDisplayBounds(_this, display, &bounds);
227
228
if ((window->flags & SDL_WINDOW_FULLSCREEN)
|| window->x == SDL_WINDOWPOS_CENTERED) {
229
x = bounds.x + (bounds.w - window->w) / 2;
230
} else if (window->x == SDL_WINDOWPOS_UNDEFINED) {
231
232
233
234
235
if (bounds.x == 0) {
x = CW_USEDEFAULT;
} else {
x = bounds.x;
}
237
x = bounds.x + window->x + rect.left;
239
240
if ((window->flags & SDL_WINDOW_FULLSCREEN)
|| window->y == SDL_WINDOWPOS_CENTERED) {
241
242
243
244
245
246
247
y = bounds.y + (bounds.h - window->h) / 2;
} else if (window->x == SDL_WINDOWPOS_UNDEFINED) {
if (bounds.x == 0) {
y = CW_USEDEFAULT;
} else {
y = bounds.y;
}
249
y = bounds.y + window->y + rect.top;
252
253
254
hwnd =
CreateWindow(SDL_Appname, TEXT(""), style, x, y, w, h, NULL, NULL,
SDL_Instance, NULL);
255
256
257
258
259
if (!hwnd) {
WIN_SetError("Couldn't create window");
return -1;
}
260
/* we're configuring the tablet data. See Wintab reference for more info */
261
262
if (videodata->wintabDLL
&& videodata->WTInfoA(WTI_DEFSYSCTX, 0, &lc) != 0) {
263
264
265
266
267
268
lc.lcPktData = PACKETDATA;
lc.lcPktMode = PACKETMODE;
lc.lcOptions |= CXO_MESSAGES;
lc.lcOptions |= CXO_SYSTEM;
lc.lcMoveMask = PACKETDATA;
lc.lcBtnDnMask = lc.lcBtnUpMask = PACKETDATA;
269
270
videodata->WTInfoA(WTI_DEVICES, DVC_X, &TabX);
videodata->WTInfoA(WTI_DEVICES, DVC_Y, &TabY);
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
lc.lcInOrgX = 0;
lc.lcInOrgY = 0;
lc.lcInExtX = TabX.axMax;
lc.lcInExtY = TabY.axMax;
lc.lcOutOrgX = 0;
lc.lcOutOrgY = 0;
lc.lcOutExtX = GetSystemMetrics(SM_CXSCREEN);
lc.lcOutExtY = -GetSystemMetrics(SM_CYSCREEN);
if (window->id > highestId) {
HCTX *tmp_hctx;
highestId = window->id;
tmp_hctx =
(HCTX *) SDL_realloc(g_hCtx, (highestId + 1) * sizeof(HCTX));
if (!tmp_hctx) {
SDL_OutOfMemory();
DestroyWindow(hwnd);
return -1;
}
g_hCtx = tmp_hctx;
}
291
g_hCtx[window->id] = videodata->WTOpenA(hwnd, &lc, TRUE);
293
#ifndef _WIN32_WCE /* has no RawInput */
294
295
296
297
298
299
/* we're telling the window, we want it to report raw input events from mice */
Rid.usUsagePage = 0x01;
Rid.usUsage = 0x02;
Rid.dwFlags = RIDEV_INPUTSINK;
Rid.hwndTarget = hwnd;
RegisterRawInputDevices(&Rid, 1, sizeof(Rid));
301
302
303
WIN_PumpEvents(_this);
304
if (SetupWindowData(_this, window, hwnd, SDL_TRUE) < 0) {
305
306
307
DestroyWindow(hwnd);
return -1;
}
308
#ifdef SDL_VIDEO_OPENGL_WGL
309
310
311
312
313
314
315
if (window->flags & SDL_WINDOW_OPENGL) {
if (WIN_GL_SetupWindow(_this, window) < 0) {
WIN_DestroyWindow(_this, window);
return -1;
}
}
#endif
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
return 0;
}
int
WIN_CreateWindowFrom(_THIS, SDL_Window * window, const void *data)
{
HWND hwnd = (HWND) data;
LPTSTR title;
int titleLen;
/* Query the title from the existing window */
titleLen = GetWindowTextLength(hwnd);
title = SDL_stack_alloc(TCHAR, titleLen + 1);
if (title) {
titleLen = GetWindowText(hwnd, title, titleLen);
} else {
titleLen = 0;
}
if (titleLen > 0) {
window->title = WIN_StringToUTF8(title);
}
if (title) {
SDL_stack_free(title);
}
341
if (SetupWindowData(_this, window, hwnd, SDL_FALSE) < 0) {
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
return -1;
}
return 0;
}
void
WIN_SetWindowTitle(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
LPTSTR title;
if (window->title) {
title = WIN_UTF8ToString(window->title);
} else {
title = NULL;
}
SetWindowText(hwnd, title ? title : TEXT(""));
if (title) {
SDL_free(title);
}
}
364
365
366
367
368
369
void
WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
HICON hicon = NULL;
370
if (icon) {
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
BYTE *icon_bmp;
int icon_len;
SDL_RWops *dst;
SDL_PixelFormat format;
SDL_Surface *surface;
/* Create temporary bitmap buffer */
icon_len = 40 + icon->h * icon->w * 4;
icon_bmp = SDL_stack_alloc(BYTE, icon_len);
dst = SDL_RWFromMem(icon_bmp, icon_len);
if (!dst) {
SDL_stack_free(icon_bmp);
return;
}
/* Write the BITMAPINFO header */
SDL_WriteLE32(dst, 40);
SDL_WriteLE32(dst, icon->w);
389
SDL_WriteLE32(dst, icon->h * 2);
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
SDL_WriteLE16(dst, 1);
SDL_WriteLE16(dst, 32);
SDL_WriteLE32(dst, BI_RGB);
SDL_WriteLE32(dst, icon->h * icon->w * 4);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
SDL_WriteLE32(dst, 0);
/* Convert the icon to a 32-bit surface with alpha channel */
SDL_InitFormat(&format, 32,
0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000);
surface = SDL_ConvertSurface(icon, &format, 0);
if (surface) {
/* Write the pixels upside down into the bitmap buffer */
int y = surface->h;
while (y--) {
407
Uint8 *src = (Uint8 *) surface->pixels + y * surface->pitch;
408
409
410
411
SDL_RWwrite(dst, src, surface->pitch, 1);
}
SDL_FreeSurface(surface);
412
413
/* TODO: create the icon in WinCE (CreateIconFromResource isn't available) */
#ifndef _WIN32_WCE
414
415
hicon =
CreateIconFromResource(icon_bmp, icon_len, TRUE, 0x00030000);
417
418
419
420
421
}
SDL_RWclose(dst);
SDL_stack_free(icon_bmp);
}
422
/* Set the icon for the window */
423
SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM) hicon);
424
425
/* Set the icon in the task manager (should we do this?) */
426
SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM) hicon);
429
430
431
void
WIN_SetWindowPosition(_THIS, SDL_Window * window)
{
432
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
433
434
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
RECT rect;
435
SDL_Rect bounds;
436
437
DWORD style;
HWND top;
438
BOOL menu;
439
440
441
442
443
444
445
446
447
448
449
450
451
int x, y;
/* Figure out what the window area will be */
if (window->flags & SDL_WINDOW_FULLSCREEN) {
top = HWND_TOPMOST;
} else {
top = HWND_NOTOPMOST;
}
style = GetWindowLong(hwnd, GWL_STYLE);
rect.left = 0;
rect.top = 0;
rect.right = window->w;
rect.bottom = window->h;
452
453
454
455
456
457
#ifdef _WIN32_WCE
menu = FALSE;
#else
menu = (style & WS_CHILDWINDOW) ? FALSE : (GetMenu(hwnd) != NULL);
#endif
AdjustWindowRectEx(&rect, style, menu, 0);
459
WIN_GetDisplayBounds(_this, display, &bounds);
460
461
if ((window->flags & SDL_WINDOW_FULLSCREEN)
|| window->x == SDL_WINDOWPOS_CENTERED) {
462
x = bounds.x + (bounds.w - window->w) / 2;
463
} else {
464
x = bounds.x + window->x + rect.left;
466
467
if ((window->flags & SDL_WINDOW_FULLSCREEN)
|| window->y == SDL_WINDOWPOS_CENTERED) {
468
y = bounds.y + (bounds.h - window->h) / 2;
469
} else {
470
y = bounds.y + window->y + rect.top;
473
SetWindowPos(hwnd, top, x, y, 0, 0, (SWP_NOCOPYBITS | SWP_NOSIZE));
474
475
476
477
478
479
480
481
482
}
void
WIN_SetWindowSize(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
RECT rect;
DWORD style;
HWND top;
483
BOOL menu;
484
485
486
487
488
489
490
491
492
493
494
495
496
int w, h;
/* Figure out what the window area will be */
if (window->flags & SDL_WINDOW_FULLSCREEN) {
top = HWND_TOPMOST;
} else {
top = HWND_NOTOPMOST;
}
style = GetWindowLong(hwnd, GWL_STYLE);
rect.left = 0;
rect.top = 0;
rect.right = window->w;
rect.bottom = window->h;
497
498
499
500
501
502
#ifdef _WIN32_WCE
menu = FALSE;
#else
menu = (style & WS_CHILDWINDOW) ? FALSE : (GetMenu(hwnd) != NULL);
#endif
AdjustWindowRectEx(&rect, style, menu, 0);
503
504
505
w = (rect.right - rect.left);
h = (rect.bottom - rect.top);
506
SetWindowPos(hwnd, top, 0, 0, w, h, (SWP_NOCOPYBITS | SWP_NOMOVE));
507
508
509
510
511
512
513
514
}
void
WIN_ShowWindow(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
ShowWindow(hwnd, SW_SHOW);
515
516
517
518
519
520
521
522
#ifdef _WIN32_WCE
if (window->flags & SDL_WINDOW_FULLSCREEN) {
CE_SHFullScreen(hwnd,
SHFS_HIDESTARTICON | SHFS_HIDETASKBAR |
SHFS_HIDESIPBUTTON);
}
#endif
523
524
525
526
527
528
529
530
}
void
WIN_HideWindow(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
ShowWindow(hwnd, SW_HIDE);
531
532
533
534
535
536
537
538
#ifdef _WIN32_WCE
if (window->flags & SDL_WINDOW_FULLSCREEN) {
CE_SHFullScreen(hwnd,
SHFS_SHOWSTARTICON | SHFS_SHOWTASKBAR |
SHFS_SHOWSIPBUTTON);
}
#endif
539
540
541
542
543
544
545
546
547
548
549
550
551
552
}
void
WIN_RaiseWindow(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
HWND top;
if (window->flags & SDL_WINDOW_FULLSCREEN) {
top = HWND_TOPMOST;
} else {
top = HWND_NOTOPMOST;
}
SetWindowPos(hwnd, top, 0, 0, 0, 0, (SWP_NOMOVE | SWP_NOSIZE));
553
554
555
556
557
558
559
560
#ifdef _WIN32_WCE
if (window->flags & SDL_WINDOW_FULLSCREEN) {
CE_SHFullScreen(hwnd,
SHFS_HIDESTARTICON | SHFS_HIDETASKBAR |
SHFS_HIDESIPBUTTON);
}
#endif
561
562
563
564
565
566
567
568
}
void
WIN_MaximizeWindow(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
ShowWindow(hwnd, SW_MAXIMIZE);
569
570
571
572
573
574
575
576
#ifdef _WIN32_WCE
if (window->flags & SDL_WINDOW_FULLSCREEN) {
CE_SHFullScreen(hwnd,
SHFS_HIDESTARTICON | SHFS_HIDETASKBAR |
SHFS_HIDESIPBUTTON);
}
#endif
577
578
579
580
581
582
583
584
}
void
WIN_MinimizeWindow(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
ShowWindow(hwnd, SW_MINIMIZE);
585
586
587
588
589
590
591
592
#ifdef _WIN32_WCE
if (window->flags & SDL_WINDOW_FULLSCREEN) {
CE_SHFullScreen(hwnd,
SHFS_SHOWSTARTICON | SHFS_SHOWTASKBAR |
SHFS_SHOWSIPBUTTON);
}
#endif
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
}
void
WIN_RestoreWindow(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
ShowWindow(hwnd, SW_RESTORE);
}
void
WIN_SetWindowGrab(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
608
609
if ((window->flags & (SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_FULLSCREEN))
&& (window->flags & SDL_WINDOW_INPUT_FOCUS)) {
610
611
612
613
614
615
616
617
618
619
620
621
622
RECT rect;
GetClientRect(hwnd, &rect);
ClientToScreen(hwnd, (LPPOINT) & rect);
ClientToScreen(hwnd, (LPPOINT) & rect + 1);
ClipCursor(&rect);
} else {
ClipCursor(NULL);
}
}
void
WIN_DestroyWindow(_THIS, SDL_Window * window)
{
623
SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
624
625
626
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
if (data) {
627
ReleaseDC(data->hwnd, data->hdc);
628
if (data->created) {
629
630
631
if (videodata->wintabDLL) {
videodata->WTClose(g_hCtx[window->id]);
}
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
DestroyWindow(data->hwnd);
}
SDL_free(data);
}
}
SDL_bool
WIN_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
if (info->version.major <= SDL_MAJOR_VERSION) {
info->window = hwnd;
return SDL_TRUE;
} else {
SDL_SetError("Application not compiled with SDL %d.%d\n",
SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
return SDL_FALSE;
}
}
652
653
654
655
656
657
658
/*
* Creates a HelperWindow used for DirectInput events.
*/
int
SDL_HelperWindowCreate(void)
{
659
660
HINSTANCE hInstance = GetModuleHandle(NULL);
WNDCLASS wce;
661
HWND hWndParent = NULL;
663
664
665
666
667
/* Make sure window isn't created twice. */
if (SDL_HelperWindow != NULL) {
return 0;
}
668
/* Create the class. */
669
SDL_zero(wce);
670
wce.lpfnWndProc = DefWindowProc;
671
672
673
674
wce.lpszClassName = (LPCWSTR) SDL_HelperWindowClassName;
wce.hInstance = hInstance;
/* Register the class. */
675
SDL_HelperWindowClass = RegisterClass(&wce);
676
677
678
679
680
681
if (SDL_HelperWindowClass == 0) {
SDL_SetError("Unable to create Helper Window Class: error %d.",
GetLastError());
return -1;
}
682
683
684
685
686
#ifndef _WIN32_WCE
/* WinCE doesn't have HWND_MESSAGE */
hWndParent = HWND_MESSAGE;
#endif
687
/* Create the window. */
688
689
SDL_HelperWindow = CreateWindowEx(0, SDL_HelperWindowClassName,
SDL_HelperWindowName,
690
WS_OVERLAPPED, CW_USEDEFAULT,
691
CW_USEDEFAULT, CW_USEDEFAULT,
692
CW_USEDEFAULT, hWndParent, NULL,
693
hInstance, NULL);
694
if (SDL_HelperWindow == NULL) {
695
UnregisterClass(SDL_HelperWindowClassName, hInstance);
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
SDL_SetError("Unable to create Helper Window: error %d.",
GetLastError());
return -1;
}
return 0;
}
/*
* Destroys the HelperWindow previously created with SDL_HelperWindowCreate.
*/
void
SDL_HelperWindowDestroy(void)
{
711
HINSTANCE hInstance = GetModuleHandle(NULL);
713
/* Destroy the window. */
714
715
if (SDL_HelperWindow != NULL) {
if (DestroyWindow(SDL_HelperWindow) == 0) {
716
717
718
SDL_SetError("Unable to destroy Helper Window: error %d.",
GetLastError());
return;
720
721
722
723
SDL_HelperWindow = NULL;
}
/* Unregister the class. */
724
725
if (SDL_HelperWindowClass != 0) {
if ((UnregisterClass(SDL_HelperWindowClassName, hInstance)) == 0) {
726
727
728
SDL_SetError("Unable to destroy Helper Window Class: error %d.",
GetLastError());
return;
730
731
732
733
734
SDL_HelperWindowClass = 0;
}
}
735
/* vi: set ts=4 sw=4 expandtab: */