1 |
/* -*- c-basic-offset: 8 -*- |
2 |
rdesktop: A Remote Desktop Protocol client. |
3 |
Seamless windows - Remote server hook DLL |
4 |
|
5 |
Based on code copyright (C) 2004-2005 Martin Wickett |
6 |
|
7 |
Copyright 2005-2008 Peter Åstrand <astrand@cendio.se> for Cendio AB |
8 |
Copyright 2006-2008 Pierre Ossman <ossman@cendio.se> for Cendio AB |
9 |
|
10 |
This program is free software; you can redistribute it and/or modify |
11 |
it under the terms of the GNU General Public License as published by |
12 |
the Free Software Foundation; either version 2 of the License, or |
13 |
(at your option) any later version. |
14 |
|
15 |
This program is distributed in the hope that it will be useful, |
16 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 |
GNU General Public License for more details. |
19 |
|
20 |
You should have received a copy of the GNU General Public License |
21 |
along with this program; if not, write to the Free Software |
22 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
23 |
*/ |
24 |
|
25 |
#include <assert.h> |
26 |
#include <stdio.h> |
27 |
#include <stdarg.h> |
28 |
|
29 |
#include <windows.h> |
30 |
#include <winuser.h> |
31 |
|
32 |
#include "../vchannel.h" |
33 |
|
34 |
#define DLL_EXPORT __declspec(dllexport) |
35 |
|
36 |
#ifdef __GNUC__ |
37 |
#define SHARED __attribute__((section ("SHAREDDATA"), shared)) |
38 |
#else |
39 |
#define SHARED |
40 |
#endif |
41 |
|
42 |
// Shared DATA |
43 |
#pragma data_seg ( "SHAREDDATA" ) |
44 |
|
45 |
// this is the total number of processes this dll is currently attached to |
46 |
int g_instance_count SHARED = 0; |
47 |
|
48 |
// blocks for locally generated events |
49 |
HWND g_block_move_hwnd SHARED = NULL; |
50 |
unsigned int g_block_move_serial SHARED = 0; |
51 |
RECT g_block_move SHARED = { 0, 0, 0, 0 }; |
52 |
|
53 |
unsigned int g_blocked_zchange_serial SHARED = 0; |
54 |
HWND g_blocked_zchange[2] SHARED = { NULL, NULL }; |
55 |
|
56 |
unsigned int g_blocked_focus_serial SHARED = 0; |
57 |
HWND g_blocked_focus SHARED = NULL; |
58 |
|
59 |
unsigned int g_blocked_state_serial SHARED = 0; |
60 |
HWND g_blocked_state_hwnd SHARED = NULL; |
61 |
int g_blocked_state SHARED = -1; |
62 |
|
63 |
#pragma data_seg () |
64 |
|
65 |
#pragma comment(linker, "/section:SHAREDDATA,rws") |
66 |
|
67 |
#define FOCUS_MSG_NAME "WM_SEAMLESS_FOCUS" |
68 |
static UINT g_wm_seamless_focus; |
69 |
|
70 |
static HHOOK g_cbt_hook = NULL; |
71 |
static HHOOK g_wndproc_hook = NULL; |
72 |
static HHOOK g_wndprocret_hook = NULL; |
73 |
|
74 |
static HINSTANCE g_instance = NULL; |
75 |
|
76 |
static HANDLE g_mutex = NULL; |
77 |
|
78 |
static BOOL |
79 |
is_toplevel(HWND hwnd) |
80 |
{ |
81 |
BOOL toplevel; |
82 |
HWND parent; |
83 |
parent = GetAncestor(hwnd, GA_PARENT); |
84 |
|
85 |
/* According to MS: "A window that has no parent, or whose |
86 |
parent is the desktop window, is called a top-level |
87 |
window." See http://msdn2.microsoft.com/en-us/library/ms632597(VS.85).aspx. */ |
88 |
toplevel = (!parent || parent == GetDesktopWindow()); |
89 |
return toplevel; |
90 |
} |
91 |
|
92 |
/* Returns true if a window is a menu window. */ |
93 |
static BOOL |
94 |
is_menu(HWND hwnd) |
95 |
{ |
96 |
/* Notepad menus have an owner, but Seamonkey menus does not, |
97 |
so we cannot use the owner in our check. This leaves us with |
98 |
checking WS_EX_TOOLWINDOW and WS_EX_TOPMOST. */ |
99 |
|
100 |
LONG exstyle = GetWindowLong(hwnd, GWL_EXSTYLE); |
101 |
return (exstyle & (WS_EX_TOOLWINDOW | WS_EX_TOPMOST)); |
102 |
} |
103 |
|
104 |
/* Determine the "parent" field for the CREATE response. */ |
105 |
static HWND |
106 |
get_parent(HWND hwnd) |
107 |
{ |
108 |
HWND result; |
109 |
HWND owner; |
110 |
LONG exstyle; |
111 |
|
112 |
/* Use the same logic to determine if the window should be |
113 |
"transient" (ie have no task icon) as MS uses. This is documented at |
114 |
http://msdn2.microsoft.com/en-us/library/bb776822.aspx */ |
115 |
owner = GetWindow(hwnd, GW_OWNER); |
116 |
exstyle = GetWindowLong(hwnd, GWL_EXSTYLE); |
117 |
if (!owner && !(exstyle & WS_EX_TOOLWINDOW)) |
118 |
{ |
119 |
/* display taskbar icon */ |
120 |
result = NULL; |
121 |
} |
122 |
else |
123 |
{ |
124 |
/* no taskbar icon */ |
125 |
if (owner) |
126 |
result = owner; |
127 |
else |
128 |
result = (HWND) - 1; |
129 |
} |
130 |
|
131 |
return result; |
132 |
} |
133 |
|
134 |
static void |
135 |
update_position(HWND hwnd) |
136 |
{ |
137 |
RECT rect, blocked; |
138 |
HWND blocked_hwnd; |
139 |
unsigned int serial; |
140 |
|
141 |
WaitForSingleObject(g_mutex, INFINITE); |
142 |
blocked_hwnd = g_block_move_hwnd; |
143 |
serial = g_block_move_serial; |
144 |
memcpy(&blocked, &g_block_move, sizeof(RECT)); |
145 |
ReleaseMutex(g_mutex); |
146 |
|
147 |
vchannel_block(); |
148 |
|
149 |
if (!GetWindowRect(hwnd, &rect)) |
150 |
{ |
151 |
debug("GetWindowRect failed!\n"); |
152 |
goto end; |
153 |
} |
154 |
|
155 |
if ((hwnd == blocked_hwnd) && (rect.left == blocked.left) && (rect.top == blocked.top) |
156 |
&& (rect.right == blocked.right) && (rect.bottom == blocked.bottom)) |
157 |
goto end; |
158 |
|
159 |
vchannel_write("POSITION", "0x%08lx,%d,%d,%d,%d,0x%08x", |
160 |
hwnd, |
161 |
rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, 0); |
162 |
|
163 |
end: |
164 |
vchannel_unblock(); |
165 |
} |
166 |
|
167 |
static void |
168 |
update_zorder(HWND hwnd) |
169 |
{ |
170 |
HWND behind; |
171 |
HWND block_hwnd, block_behind; |
172 |
unsigned int serial; |
173 |
|
174 |
WaitForSingleObject(g_mutex, INFINITE); |
175 |
serial = g_blocked_zchange_serial; |
176 |
block_hwnd = g_blocked_zchange[0]; |
177 |
block_behind = g_blocked_zchange[1]; |
178 |
ReleaseMutex(g_mutex); |
179 |
|
180 |
vchannel_block(); |
181 |
|
182 |
behind = GetNextWindow(hwnd, GW_HWNDPREV); |
183 |
while (behind) |
184 |
{ |
185 |
LONG style; |
186 |
|
187 |
style = GetWindowLong(behind, GWL_STYLE); |
188 |
|
189 |
if ((!(style & WS_CHILD) || (style & WS_POPUP)) && (style & WS_VISIBLE)) |
190 |
break; |
191 |
|
192 |
behind = GetNextWindow(behind, GW_HWNDPREV); |
193 |
} |
194 |
|
195 |
if ((hwnd == block_hwnd) && (behind == block_behind)) |
196 |
vchannel_write("ACK", "%u", serial); |
197 |
else |
198 |
{ |
199 |
int flags = 0; |
200 |
LONG exstyle = GetWindowLong(hwnd, GWL_EXSTYLE); |
201 |
// handle always on top |
202 |
if (exstyle & WS_EX_TOPMOST) |
203 |
flags |= SEAMLESS_CREATE_TOPMOST; |
204 |
vchannel_write("ZCHANGE", "0x%08lx,0x%08lx,0x%08x", hwnd, behind, flags); |
205 |
} |
206 |
|
207 |
vchannel_unblock(); |
208 |
} |
209 |
|
210 |
static HICON |
211 |
get_icon(HWND hwnd, int large) |
212 |
{ |
213 |
HICON icon; |
214 |
|
215 |
if (!SendMessageTimeout(hwnd, WM_GETICON, large ? ICON_BIG : ICON_SMALL, |
216 |
0, SMTO_ABORTIFHUNG, 1000, (PDWORD_PTR) & icon)) |
217 |
return NULL; |
218 |
|
219 |
if (icon) |
220 |
return icon; |
221 |
|
222 |
/* |
223 |
* Modern versions of Windows uses the voodoo value of 2 instead of 0 |
224 |
* for the small icons. |
225 |
*/ |
226 |
if (!large) |
227 |
{ |
228 |
if (!SendMessageTimeout(hwnd, WM_GETICON, 2, |
229 |
0, SMTO_ABORTIFHUNG, 1000, (PDWORD_PTR) & icon)) |
230 |
return NULL; |
231 |
} |
232 |
|
233 |
if (icon) |
234 |
return icon; |
235 |
|
236 |
icon = (HICON) GetClassLong(hwnd, large ? GCL_HICON : GCL_HICONSM); |
237 |
|
238 |
if (icon) |
239 |
return icon; |
240 |
|
241 |
return NULL; |
242 |
} |
243 |
|
244 |
static int |
245 |
extract_icon(HICON icon, char *buffer, int maxlen) |
246 |
{ |
247 |
ICONINFO info; |
248 |
HDC hdc; |
249 |
BITMAP mask_bmp, color_bmp; |
250 |
BITMAPINFO bmi; |
251 |
int size, i; |
252 |
char *mask_buf, *color_buf; |
253 |
char *o, *m, *c; |
254 |
int ret = -1; |
255 |
|
256 |
assert(buffer); |
257 |
assert(maxlen > 0); |
258 |
|
259 |
if (!GetIconInfo(icon, &info)) |
260 |
goto fail; |
261 |
|
262 |
if (!GetObject(info.hbmMask, sizeof(BITMAP), &mask_bmp)) |
263 |
goto free_bmps; |
264 |
if (!GetObject(info.hbmColor, sizeof(BITMAP), &color_bmp)) |
265 |
goto free_bmps; |
266 |
|
267 |
if (mask_bmp.bmWidth != color_bmp.bmWidth) |
268 |
goto free_bmps; |
269 |
if (mask_bmp.bmHeight != color_bmp.bmHeight) |
270 |
goto free_bmps; |
271 |
|
272 |
if ((mask_bmp.bmWidth * mask_bmp.bmHeight * 4) > maxlen) |
273 |
goto free_bmps; |
274 |
|
275 |
size = (mask_bmp.bmWidth + 3) / 4 * 4; |
276 |
size *= mask_bmp.bmHeight; |
277 |
size *= 4; |
278 |
|
279 |
mask_buf = malloc(size); |
280 |
if (!mask_buf) |
281 |
goto free_bmps; |
282 |
color_buf = malloc(size); |
283 |
if (!color_buf) |
284 |
goto free_mbuf; |
285 |
|
286 |
memset(&bmi, 0, sizeof(BITMAPINFO)); |
287 |
|
288 |
bmi.bmiHeader.biSize = sizeof(BITMAPINFO); |
289 |
bmi.bmiHeader.biWidth = mask_bmp.bmWidth; |
290 |
bmi.bmiHeader.biHeight = -mask_bmp.bmHeight; |
291 |
bmi.bmiHeader.biPlanes = 1; |
292 |
bmi.bmiHeader.biBitCount = 32; |
293 |
bmi.bmiHeader.biCompression = BI_RGB; |
294 |
bmi.bmiHeader.biSizeImage = size; |
295 |
|
296 |
hdc = CreateCompatibleDC(NULL); |
297 |
if (!hdc) |
298 |
goto free_cbuf; |
299 |
|
300 |
if (!GetDIBits(hdc, info.hbmMask, 0, mask_bmp.bmHeight, mask_buf, &bmi, DIB_RGB_COLORS)) |
301 |
goto del_dc; |
302 |
if (!GetDIBits(hdc, info.hbmColor, 0, color_bmp.bmHeight, color_buf, &bmi, DIB_RGB_COLORS)) |
303 |
goto del_dc; |
304 |
|
305 |
o = buffer; |
306 |
m = mask_buf; |
307 |
c = color_buf; |
308 |
for (i = 0; i < size / 4; i++) |
309 |
{ |
310 |
o[0] = c[2]; |
311 |
o[1] = c[1]; |
312 |
o[2] = c[0]; |
313 |
|
314 |
o[3] = ((int) (unsigned char) m[0] + (unsigned char) m[1] + |
315 |
(unsigned char) m[2]) / 3; |
316 |
o[3] = 0xff - o[3]; |
317 |
|
318 |
o += 4; |
319 |
m += 4; |
320 |
c += 4; |
321 |
} |
322 |
|
323 |
ret = size; |
324 |
|
325 |
del_dc: |
326 |
DeleteDC(hdc); |
327 |
|
328 |
free_cbuf: |
329 |
free(color_buf); |
330 |
free_mbuf: |
331 |
free(mask_buf); |
332 |
|
333 |
free_bmps: |
334 |
DeleteObject(info.hbmMask); |
335 |
DeleteObject(info.hbmColor); |
336 |
|
337 |
fail: |
338 |
return ret; |
339 |
} |
340 |
|
341 |
#define ICON_CHUNK 400 |
342 |
|
343 |
static void |
344 |
update_icon(HWND hwnd, HICON icon, int large) |
345 |
{ |
346 |
int i, j, size, chunks; |
347 |
char buf[32 * 32 * 4]; |
348 |
char asciibuf[ICON_CHUNK * 2 + 1]; |
349 |
|
350 |
size = extract_icon(icon, buf, sizeof(buf)); |
351 |
if (size <= 0) |
352 |
return; |
353 |
|
354 |
if ((!large && size != 16 * 16 * 4) || (large && size != 32 * 32 * 4)) |
355 |
{ |
356 |
debug("Unexpected icon size."); |
357 |
return; |
358 |
} |
359 |
|
360 |
chunks = (size + ICON_CHUNK - 1) / ICON_CHUNK; |
361 |
for (i = 0; i < chunks; i++) |
362 |
{ |
363 |
for (j = 0; j < ICON_CHUNK; j++) |
364 |
{ |
365 |
if (i * ICON_CHUNK + j >= size) |
366 |
break; |
367 |
sprintf(asciibuf + j * 2, "%02x", |
368 |
(int) (unsigned char) buf[i * ICON_CHUNK + j]); |
369 |
} |
370 |
|
371 |
vchannel_write("SETICON", "0x%08lx,%d,RGBA,%d,%d,%s", hwnd, i, |
372 |
large ? 32 : 16, large ? 32 : 16, asciibuf); |
373 |
} |
374 |
} |
375 |
|
376 |
static LRESULT CALLBACK |
377 |
wndproc_hook_proc(int code, WPARAM cur_thread, LPARAM details) |
378 |
{ |
379 |
HWND hwnd; |
380 |
UINT msg; |
381 |
WPARAM wparam; |
382 |
LPARAM lparam; |
383 |
|
384 |
LONG style; |
385 |
|
386 |
if (code < 0) |
387 |
goto end; |
388 |
|
389 |
hwnd = ((CWPSTRUCT *) details)->hwnd; |
390 |
msg = ((CWPSTRUCT *) details)->message; |
391 |
wparam = ((CWPSTRUCT *) details)->wParam; |
392 |
lparam = ((CWPSTRUCT *) details)->lParam; |
393 |
|
394 |
if (!is_toplevel(hwnd)) |
395 |
{ |
396 |
goto end; |
397 |
} |
398 |
|
399 |
style = GetWindowLong(hwnd, GWL_STYLE); |
400 |
|
401 |
switch (msg) |
402 |
{ |
403 |
case WM_WINDOWPOSCHANGED: |
404 |
{ |
405 |
WINDOWPOS *wp = (WINDOWPOS *) lparam; |
406 |
|
407 |
if (wp->flags & SWP_SHOWWINDOW) |
408 |
{ |
409 |
unsigned short title[150]; |
410 |
int state; |
411 |
DWORD pid; |
412 |
int flags; |
413 |
HICON icon; |
414 |
LONG exstyle; |
415 |
|
416 |
exstyle = GetWindowLong(hwnd, GWL_EXSTYLE); |
417 |
GetWindowThreadProcessId(hwnd, &pid); |
418 |
|
419 |
flags = 0; |
420 |
if (style & DS_MODALFRAME) |
421 |
flags |= SEAMLESS_CREATE_MODAL; |
422 |
// handle always on top |
423 |
if (exstyle & WS_EX_TOPMOST) |
424 |
flags |= SEAMLESS_CREATE_TOPMOST; |
425 |
|
426 |
vchannel_write("CREATE", "0x%08lx,0x%08lx,0x%08lx,0x%08x", |
427 |
(long) hwnd, (long) pid, |
428 |
(long) get_parent(hwnd), flags); |
429 |
|
430 |
GetWindowTextW(hwnd, title, sizeof(title) / sizeof(*title)); |
431 |
|
432 |
vchannel_write("TITLE", "0x%08lx,%s,0x%08x", hwnd, |
433 |
vchannel_strfilter_unicode(title), 0); |
434 |
|
435 |
icon = get_icon(hwnd, 1); |
436 |
if (icon) |
437 |
{ |
438 |
update_icon(hwnd, icon, 1); |
439 |
DeleteObject(icon); |
440 |
} |
441 |
|
442 |
icon = get_icon(hwnd, 0); |
443 |
if (icon) |
444 |
{ |
445 |
update_icon(hwnd, icon, 0); |
446 |
DeleteObject(icon); |
447 |
} |
448 |
|
449 |
if (style & WS_MAXIMIZE) |
450 |
state = 2; |
451 |
else if (style & WS_MINIMIZE) |
452 |
state = 1; |
453 |
else |
454 |
state = 0; |
455 |
|
456 |
update_position(hwnd); |
457 |
|
458 |
vchannel_write("STATE", "0x%08lx,0x%08x,0x%08x", hwnd, |
459 |
state, 0); |
460 |
} |
461 |
|
462 |
if (wp->flags & SWP_HIDEWINDOW) |
463 |
vchannel_write("DESTROY", "0x%08lx,0x%08x", hwnd, 0); |
464 |
|
465 |
if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
466 |
break; |
467 |
|
468 |
if (!(wp->flags & SWP_NOMOVE && wp->flags & SWP_NOSIZE)) |
469 |
update_position(hwnd); |
470 |
|
471 |
break; |
472 |
} |
473 |
|
474 |
case WM_SETICON: |
475 |
if (!(style & WS_VISIBLE)) |
476 |
break; |
477 |
|
478 |
switch (wparam) |
479 |
{ |
480 |
case ICON_BIG: |
481 |
if (lparam) |
482 |
update_icon(hwnd, (HICON) lparam, 1); |
483 |
else |
484 |
vchannel_write("DELICON", "0x%08lx,RGBA,32,32", |
485 |
hwnd); |
486 |
break; |
487 |
case ICON_SMALL: |
488 |
case 2: |
489 |
if (lparam) |
490 |
update_icon(hwnd, (HICON) lparam, 0); |
491 |
else |
492 |
vchannel_write("DELICON", "0x%08lx,RGBA,16,16", |
493 |
hwnd); |
494 |
break; |
495 |
default: |
496 |
debug("Weird icon size %d", (int) wparam); |
497 |
} |
498 |
|
499 |
break; |
500 |
|
501 |
case WM_SIZE: |
502 |
if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
503 |
break; |
504 |
update_position(hwnd); |
505 |
break; |
506 |
|
507 |
case WM_MOVE: |
508 |
if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
509 |
break; |
510 |
update_position(hwnd); |
511 |
break; |
512 |
|
513 |
case WM_DESTROY: |
514 |
if (!(style & WS_VISIBLE)) |
515 |
break; |
516 |
vchannel_write("DESTROY", "0x%08lx,0x%08x", hwnd, 0); |
517 |
break; |
518 |
|
519 |
default: |
520 |
break; |
521 |
} |
522 |
|
523 |
end: |
524 |
return CallNextHookEx(g_wndproc_hook, code, cur_thread, details); |
525 |
} |
526 |
|
527 |
static LRESULT CALLBACK |
528 |
wndprocret_hook_proc(int code, WPARAM cur_thread, LPARAM details) |
529 |
{ |
530 |
HWND hwnd; |
531 |
UINT msg; |
532 |
WPARAM wparam; |
533 |
LPARAM lparam; |
534 |
|
535 |
LONG style; |
536 |
|
537 |
if (code < 0) |
538 |
goto end; |
539 |
|
540 |
hwnd = ((CWPRETSTRUCT *) details)->hwnd; |
541 |
msg = ((CWPRETSTRUCT *) details)->message; |
542 |
wparam = ((CWPRETSTRUCT *) details)->wParam; |
543 |
lparam = ((CWPRETSTRUCT *) details)->lParam; |
544 |
|
545 |
if (!is_toplevel(hwnd)) |
546 |
{ |
547 |
goto end; |
548 |
} |
549 |
|
550 |
style = GetWindowLong(hwnd, GWL_STYLE); |
551 |
|
552 |
switch (msg) |
553 |
{ |
554 |
case WM_WINDOWPOSCHANGED: |
555 |
{ |
556 |
WINDOWPOS *wp = (WINDOWPOS *) lparam; |
557 |
|
558 |
if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
559 |
break; |
560 |
|
561 |
if (!(wp->flags & SWP_NOZORDER)) |
562 |
update_zorder(hwnd); |
563 |
|
564 |
break; |
565 |
} |
566 |
|
567 |
|
568 |
case WM_SETTEXT: |
569 |
{ |
570 |
unsigned short title[150]; |
571 |
if (!(style & WS_VISIBLE)) |
572 |
break; |
573 |
/* We cannot use the string in lparam because |
574 |
we need unicode. */ |
575 |
GetWindowTextW(hwnd, title, sizeof(title) / sizeof(*title)); |
576 |
vchannel_write("TITLE", "0x%08lx,%s,0x%08x", hwnd, |
577 |
vchannel_strfilter_unicode(title), 0); |
578 |
break; |
579 |
} |
580 |
|
581 |
case WM_SETICON: |
582 |
{ |
583 |
HICON icon; |
584 |
|
585 |
/* |
586 |
* Somehow, we never get WM_SETICON for the small icon. |
587 |
* So trigger a read of it every time the large one is |
588 |
* changed. |
589 |
*/ |
590 |
icon = get_icon(hwnd, 0); |
591 |
if (icon) |
592 |
{ |
593 |
update_icon(hwnd, icon, 0); |
594 |
DeleteObject(icon); |
595 |
} |
596 |
} |
597 |
|
598 |
default: |
599 |
break; |
600 |
} |
601 |
|
602 |
if (msg == g_wm_seamless_focus) |
603 |
{ |
604 |
/* For some reason, SetForegroundWindow() on menus |
605 |
closes them. Ignore focus requests for menu windows. */ |
606 |
if ((GetForegroundWindow() != hwnd) && !is_menu(hwnd)) |
607 |
SetForegroundWindow(hwnd); |
608 |
|
609 |
vchannel_write("ACK", "%u", g_blocked_focus_serial); |
610 |
} |
611 |
|
612 |
end: |
613 |
return CallNextHookEx(g_wndprocret_hook, code, cur_thread, details); |
614 |
} |
615 |
|
616 |
static LRESULT CALLBACK |
617 |
cbt_hook_proc(int code, WPARAM wparam, LPARAM lparam) |
618 |
{ |
619 |
if (code < 0) |
620 |
goto end; |
621 |
|
622 |
switch (code) |
623 |
{ |
624 |
case HCBT_MINMAX: |
625 |
{ |
626 |
int show, state, blocked; |
627 |
HWND hwnd, blocked_hwnd; |
628 |
unsigned int serial; |
629 |
LONG style; |
630 |
|
631 |
WaitForSingleObject(g_mutex, INFINITE); |
632 |
blocked_hwnd = g_blocked_state_hwnd; |
633 |
serial = g_blocked_state_serial; |
634 |
blocked = g_blocked_state; |
635 |
ReleaseMutex(g_mutex); |
636 |
|
637 |
hwnd = (HWND) wparam; |
638 |
|
639 |
style = GetWindowLong(hwnd, GWL_STYLE); |
640 |
|
641 |
if (!(style & WS_VISIBLE)) |
642 |
break; |
643 |
|
644 |
show = LOWORD(lparam); |
645 |
|
646 |
if ((show == SW_NORMAL) || (show == SW_SHOWNORMAL) |
647 |
|| (show == SW_RESTORE)) |
648 |
state = 0; |
649 |
else if ((show == SW_MINIMIZE) || (show == SW_SHOWMINIMIZED)) |
650 |
state = 1; |
651 |
else if ((show == SW_MAXIMIZE) || (show == SW_SHOWMAXIMIZED)) |
652 |
state = 2; |
653 |
else |
654 |
{ |
655 |
debug("Unexpected show: %d", show); |
656 |
break; |
657 |
} |
658 |
|
659 |
if ((blocked_hwnd == hwnd) && (blocked == state)) |
660 |
vchannel_write("ACK", "%u", serial); |
661 |
else |
662 |
vchannel_write("STATE", "0x%08lx,0x%08x,0x%08x", |
663 |
hwnd, state, 0); |
664 |
|
665 |
break; |
666 |
} |
667 |
|
668 |
default: |
669 |
break; |
670 |
} |
671 |
|
672 |
end: |
673 |
return CallNextHookEx(g_cbt_hook, code, wparam, lparam); |
674 |
} |
675 |
|
676 |
DLL_EXPORT void |
677 |
SetHooks(void) |
678 |
{ |
679 |
if (!g_cbt_hook) |
680 |
g_cbt_hook = SetWindowsHookEx(WH_CBT, cbt_hook_proc, g_instance, 0); |
681 |
|
682 |
if (!g_wndproc_hook) |
683 |
g_wndproc_hook = SetWindowsHookEx(WH_CALLWNDPROC, wndproc_hook_proc, g_instance, 0); |
684 |
|
685 |
if (!g_wndprocret_hook) |
686 |
g_wndprocret_hook = |
687 |
SetWindowsHookEx(WH_CALLWNDPROCRET, wndprocret_hook_proc, g_instance, 0); |
688 |
} |
689 |
|
690 |
DLL_EXPORT void |
691 |
RemoveHooks(void) |
692 |
{ |
693 |
if (g_cbt_hook) |
694 |
UnhookWindowsHookEx(g_cbt_hook); |
695 |
|
696 |
if (g_wndproc_hook) |
697 |
UnhookWindowsHookEx(g_wndproc_hook); |
698 |
|
699 |
if (g_wndprocret_hook) |
700 |
UnhookWindowsHookEx(g_wndprocret_hook); |
701 |
} |
702 |
|
703 |
DLL_EXPORT void |
704 |
SafeMoveWindow(unsigned int serial, HWND hwnd, int x, int y, int width, int height) |
705 |
{ |
706 |
RECT rect; |
707 |
|
708 |
WaitForSingleObject(g_mutex, INFINITE); |
709 |
g_block_move_hwnd = hwnd; |
710 |
g_block_move_serial = serial; |
711 |
g_block_move.left = x; |
712 |
g_block_move.top = y; |
713 |
g_block_move.right = x + width; |
714 |
g_block_move.bottom = y + height; |
715 |
ReleaseMutex(g_mutex); |
716 |
|
717 |
SetWindowPos(hwnd, NULL, x, y, width, height, SWP_NOACTIVATE | SWP_NOZORDER); |
718 |
|
719 |
vchannel_write("ACK", "%u", serial); |
720 |
|
721 |
if (!GetWindowRect(hwnd, &rect)) |
722 |
debug("GetWindowRect failed!\n"); |
723 |
else if ((rect.left != x) || (rect.top != y) || (rect.right != x + width) |
724 |
|| (rect.bottom != y + height)) |
725 |
update_position(hwnd); |
726 |
|
727 |
WaitForSingleObject(g_mutex, INFINITE); |
728 |
g_block_move_hwnd = NULL; |
729 |
memset(&g_block_move, 0, sizeof(RECT)); |
730 |
ReleaseMutex(g_mutex); |
731 |
} |
732 |
|
733 |
DLL_EXPORT void |
734 |
SafeZChange(unsigned int serial, HWND hwnd, HWND behind) |
735 |
{ |
736 |
WaitForSingleObject(g_mutex, INFINITE); |
737 |
g_blocked_zchange_serial = serial; |
738 |
g_blocked_zchange[0] = hwnd; |
739 |
g_blocked_zchange[1] = behind; |
740 |
ReleaseMutex(g_mutex); |
741 |
|
742 |
if (behind == NULL) |
743 |
behind = HWND_TOP; |
744 |
|
745 |
SetWindowPos(hwnd, behind, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE); |
746 |
|
747 |
WaitForSingleObject(g_mutex, INFINITE); |
748 |
g_blocked_zchange[0] = NULL; |
749 |
g_blocked_zchange[1] = NULL; |
750 |
ReleaseMutex(g_mutex); |
751 |
} |
752 |
|
753 |
DLL_EXPORT void |
754 |
SafeFocus(unsigned int serial, HWND hwnd) |
755 |
{ |
756 |
WaitForSingleObject(g_mutex, INFINITE); |
757 |
g_blocked_focus_serial = serial; |
758 |
g_blocked_focus = hwnd; |
759 |
ReleaseMutex(g_mutex); |
760 |
|
761 |
SendMessage(hwnd, g_wm_seamless_focus, 0, 0); |
762 |
|
763 |
WaitForSingleObject(g_mutex, INFINITE); |
764 |
g_blocked_focus = NULL; |
765 |
ReleaseMutex(g_mutex); |
766 |
} |
767 |
|
768 |
DLL_EXPORT void |
769 |
SafeSetState(unsigned int serial, HWND hwnd, int state) |
770 |
{ |
771 |
LONG style; |
772 |
int curstate; |
773 |
|
774 |
vchannel_block(); |
775 |
|
776 |
style = GetWindowLong(hwnd, GWL_STYLE); |
777 |
|
778 |
if (style & WS_MAXIMIZE) |
779 |
curstate = 2; |
780 |
else if (style & WS_MINIMIZE) |
781 |
curstate = 1; |
782 |
else |
783 |
curstate = 0; |
784 |
|
785 |
if (state == curstate) |
786 |
{ |
787 |
vchannel_write("ACK", "%u", serial); |
788 |
vchannel_unblock(); |
789 |
return; |
790 |
} |
791 |
|
792 |
WaitForSingleObject(g_mutex, INFINITE); |
793 |
g_blocked_state_hwnd = hwnd; |
794 |
g_blocked_state_serial = serial; |
795 |
g_blocked_state = state; |
796 |
ReleaseMutex(g_mutex); |
797 |
|
798 |
vchannel_unblock(); |
799 |
|
800 |
if (state == 0) |
801 |
ShowWindow(hwnd, SW_RESTORE); |
802 |
else if (state == 1) |
803 |
ShowWindow(hwnd, SW_MINIMIZE); |
804 |
else if (state == 2) |
805 |
ShowWindow(hwnd, SW_MAXIMIZE); |
806 |
else |
807 |
debug("Invalid state %d sent.", state); |
808 |
|
809 |
WaitForSingleObject(g_mutex, INFINITE); |
810 |
g_blocked_state_hwnd = NULL; |
811 |
g_blocked_state = -1; |
812 |
ReleaseMutex(g_mutex); |
813 |
} |
814 |
|
815 |
DLL_EXPORT int |
816 |
GetInstanceCount() |
817 |
{ |
818 |
return g_instance_count; |
819 |
} |
820 |
|
821 |
BOOL APIENTRY |
822 |
DllMain(HINSTANCE hinstDLL, DWORD ul_reason_for_call, LPVOID lpReserved) |
823 |
{ |
824 |
switch (ul_reason_for_call) |
825 |
{ |
826 |
case DLL_PROCESS_ATTACH: |
827 |
// remember our instance handle |
828 |
g_instance = hinstDLL; |
829 |
|
830 |
g_mutex = CreateMutex(NULL, FALSE, "Local\\SeamlessDLL"); |
831 |
if (!g_mutex) |
832 |
return FALSE; |
833 |
|
834 |
WaitForSingleObject(g_mutex, INFINITE); |
835 |
++g_instance_count; |
836 |
ReleaseMutex(g_mutex); |
837 |
|
838 |
g_wm_seamless_focus = RegisterWindowMessage(FOCUS_MSG_NAME); |
839 |
|
840 |
vchannel_open(); |
841 |
|
842 |
break; |
843 |
|
844 |
case DLL_THREAD_ATTACH: |
845 |
break; |
846 |
|
847 |
case DLL_THREAD_DETACH: |
848 |
break; |
849 |
|
850 |
case DLL_PROCESS_DETACH: |
851 |
vchannel_write("DESTROYGRP", "0x%08lx, 0x%08lx", GetCurrentProcessId(), 0); |
852 |
|
853 |
WaitForSingleObject(g_mutex, INFINITE); |
854 |
--g_instance_count; |
855 |
ReleaseMutex(g_mutex); |
856 |
|
857 |
vchannel_close(); |
858 |
|
859 |
CloseHandle(g_mutex); |
860 |
|
861 |
break; |
862 |
} |
863 |
|
864 |
return TRUE; |
865 |
} |