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