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ossman_ |
1071 |
/* -*- c-basic-offset: 8 -*- |
2 |
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rdesktop: A Remote Desktop Protocol client. |
3 |
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Seamless windows - Remote server hook DLL |
4 |
ossman_ |
1069 |
|
5 |
ossman_ |
1071 |
Based on code copyright (C) 2004-2005 Martin Wickett |
6 |
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7 |
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Copyright (C) Peter Åstrand <astrand@cendio.se> 2005-2006 |
8 |
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Copyright (C) Pierre Ossman <ossman@cendio.se> 2006 |
9 |
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10 |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
13 |
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(at your option) any later version. |
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15 |
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This program is distributed in the hope that it will be useful, |
16 |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 |
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GNU General Public License for more details. |
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20 |
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You should have received a copy of the GNU General Public License |
21 |
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along with this program; if not, write to the Free Software |
22 |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
23 |
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*/ |
24 |
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25 |
ossman_ |
1069 |
#include <stdio.h> |
26 |
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#include <stdarg.h> |
27 |
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|
28 |
ossman_ |
1071 |
#include <windows.h> |
29 |
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#include <winuser.h> |
30 |
ossman_ |
1069 |
|
31 |
ossman_ |
1073 |
#include "../vchannel.h" |
32 |
ossman_ |
1071 |
|
33 |
ossman_ |
1069 |
#define DLL_EXPORT __declspec(dllexport) |
34 |
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|
35 |
ossman_ |
1145 |
#ifdef __GNUC__ |
36 |
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#define SHARED __attribute__((section ("SHAREDDATA"), shared)) |
37 |
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#else |
38 |
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#define SHARED |
39 |
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#endif |
40 |
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|
41 |
ossman_ |
1069 |
// Shared DATA |
42 |
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#pragma data_seg ( "SHAREDDATA" ) |
43 |
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|
44 |
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// this is the total number of processes this dll is currently attached to |
45 |
ossman_ |
1145 |
int g_instance_count SHARED = 0; |
46 |
ossman_ |
1069 |
|
47 |
ossman_ |
1145 |
// blocks for locally generated events |
48 |
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RECT g_block_move SHARED = { 0, 0, 0, 0 }; |
49 |
ossman_ |
1158 |
HWND g_blocked_zchange[2] SHARED = { NULL, NULL }; |
50 |
|
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HWND g_blocked_focus SHARED = NULL; |
51 |
ossman_ |
1145 |
|
52 |
ossman_ |
1069 |
#pragma data_seg () |
53 |
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|
54 |
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#pragma comment(linker, "/section:SHAREDDATA,rws") |
55 |
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|
56 |
ossman_ |
1153 |
#define FOCUS_MSG_NAME "WM_SEAMLESS_FOCUS" |
57 |
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static UINT g_wm_seamless_focus; |
58 |
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|
59 |
ossman_ |
1071 |
static HHOOK g_cbt_hook = NULL; |
60 |
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static HHOOK g_wndproc_hook = NULL; |
61 |
ossman_ |
1134 |
static HHOOK g_wndprocret_hook = NULL; |
62 |
ossman_ |
1069 |
|
63 |
ossman_ |
1071 |
static HINSTANCE g_instance = NULL; |
64 |
ossman_ |
1069 |
|
65 |
ossman_ |
1071 |
static HANDLE g_mutex = NULL; |
66 |
ossman_ |
1069 |
|
67 |
ossman_ |
1081 |
static void |
68 |
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update_position(HWND hwnd) |
69 |
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{ |
70 |
ossman_ |
1145 |
RECT rect, blocked; |
71 |
ossman_ |
1081 |
|
72 |
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if (!GetWindowRect(hwnd, &rect)) |
73 |
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{ |
74 |
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debug("GetWindowRect failed!\n"); |
75 |
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return; |
76 |
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} |
77 |
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|
78 |
ossman_ |
1145 |
WaitForSingleObject(g_mutex, INFINITE); |
79 |
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memcpy(&blocked, &g_block_move, sizeof(RECT)); |
80 |
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ReleaseMutex(g_mutex); |
81 |
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|
82 |
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if ((rect.left == blocked.left) && (rect.top == blocked.top) |
83 |
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&& (rect.right == blocked.right) && (rect.bottom == blocked.bottom)) |
84 |
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return; |
85 |
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|
86 |
astrand |
1091 |
vchannel_write("POSITION,0x%p,%d,%d,%d,%d,0x%x", |
87 |
ossman_ |
1081 |
hwnd, |
88 |
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rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, 0); |
89 |
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} |
90 |
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|
91 |
ossman_ |
1071 |
static LRESULT CALLBACK |
92 |
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wndproc_hook_proc(int code, WPARAM cur_thread, LPARAM details) |
93 |
ossman_ |
1069 |
{ |
94 |
ossman_ |
1097 |
HWND hwnd, parent; |
95 |
ossman_ |
1079 |
UINT msg; |
96 |
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WPARAM wparam; |
97 |
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LPARAM lparam; |
98 |
ossman_ |
1069 |
|
99 |
ossman_ |
1079 |
LONG style; |
100 |
ossman_ |
1069 |
|
101 |
ossman_ |
1071 |
if (code < 0) |
102 |
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goto end; |
103 |
ossman_ |
1069 |
|
104 |
ossman_ |
1079 |
hwnd = ((CWPSTRUCT *) details)->hwnd; |
105 |
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msg = ((CWPSTRUCT *) details)->message; |
106 |
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wparam = ((CWPSTRUCT *) details)->wParam; |
107 |
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lparam = ((CWPSTRUCT *) details)->lParam; |
108 |
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|
109 |
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style = GetWindowLong(hwnd, GWL_STYLE); |
110 |
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|
111 |
ossman_ |
1082 |
/* Docs say that WS_CHILD and WS_POPUP is an illegal combination, |
112 |
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but they exist nonetheless. */ |
113 |
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if ((style & WS_CHILD) && !(style & WS_POPUP)) |
114 |
ossman_ |
1079 |
goto end; |
115 |
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|
116 |
ossman_ |
1097 |
if (style & WS_POPUP) |
117 |
ossman_ |
1109 |
{ |
118 |
ossman_ |
1097 |
parent = (HWND) GetWindowLong(hwnd, GWL_HWNDPARENT); |
119 |
ossman_ |
1109 |
if (!parent) |
120 |
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parent = (HWND) - 1; |
121 |
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} |
122 |
ossman_ |
1097 |
else |
123 |
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parent = NULL; |
124 |
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|
125 |
ossman_ |
1071 |
switch (msg) |
126 |
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{ |
127 |
ossman_ |
1069 |
|
128 |
ossman_ |
1071 |
case WM_WINDOWPOSCHANGED: |
129 |
ossman_ |
1079 |
{ |
130 |
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WINDOWPOS *wp = (WINDOWPOS *) lparam; |
131 |
ossman_ |
1069 |
|
132 |
ossman_ |
1079 |
if (wp->flags & SWP_SHOWWINDOW) |
133 |
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{ |
134 |
ossman_ |
1134 |
unsigned short title[150]; |
135 |
ossman_ |
1099 |
int state; |
136 |
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|
137 |
ossman_ |
1097 |
vchannel_write("CREATE,0x%p,0x%p,0x%x", hwnd, parent, 0); |
138 |
ossman_ |
1069 |
|
139 |
ossman_ |
1134 |
GetWindowTextW(hwnd, title, sizeof(title) / sizeof(*title)); |
140 |
ossman_ |
1069 |
|
141 |
ossman_ |
1113 |
vchannel_write("TITLE,0x%x,%s,0x%x", hwnd, |
142 |
ossman_ |
1134 |
vchannel_strfilter_unicode(title), 0); |
143 |
ossman_ |
1099 |
|
144 |
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if (style & WS_MAXIMIZE) |
145 |
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state = 2; |
146 |
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else if (style & WS_MINIMIZE) |
147 |
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state = 1; |
148 |
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else |
149 |
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state = 0; |
150 |
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|
151 |
ossman_ |
1081 |
update_position(hwnd); |
152 |
ossman_ |
1099 |
|
153 |
ossman_ |
1131 |
vchannel_write("STATE,0x%p,0x%x,0x%x", hwnd, state, 0); |
154 |
ossman_ |
1079 |
} |
155 |
ossman_ |
1069 |
|
156 |
ossman_ |
1079 |
if (wp->flags & SWP_HIDEWINDOW) |
157 |
astrand |
1091 |
vchannel_write("DESTROY,0x%p,0x%x", hwnd, 0); |
158 |
ossman_ |
1079 |
|
159 |
ossman_ |
1108 |
if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
160 |
ossman_ |
1079 |
break; |
161 |
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|
162 |
ossman_ |
1080 |
if (!(wp->flags & SWP_NOMOVE && wp->flags & SWP_NOSIZE)) |
163 |
ossman_ |
1081 |
update_position(hwnd); |
164 |
ossman_ |
1079 |
|
165 |
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if (!(wp->flags & SWP_NOZORDER)) |
166 |
ossman_ |
1080 |
{ |
167 |
ossman_ |
1158 |
HWND block_hwnd, block_behind; |
168 |
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WaitForSingleObject(g_mutex, INFINITE); |
169 |
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block_hwnd = g_blocked_zchange[0]; |
170 |
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block_behind = g_blocked_zchange[1]; |
171 |
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ReleaseMutex(g_mutex); |
172 |
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173 |
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if ((hwnd != block_hwnd) |
174 |
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|| (wp->hwndInsertAfter != block_behind)) |
175 |
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{ |
176 |
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vchannel_write("ZCHANGE,0x%p,0x%p,0x%x", |
177 |
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hwnd, |
178 |
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wp->flags & SWP_NOACTIVATE ? wp-> |
179 |
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hwndInsertAfter : 0, 0); |
180 |
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} |
181 |
ossman_ |
1080 |
} |
182 |
ossman_ |
1069 |
|
183 |
ossman_ |
1071 |
break; |
184 |
ossman_ |
1079 |
} |
185 |
ossman_ |
1069 |
|
186 |
ossman_ |
1081 |
case WM_SIZE: |
187 |
ossman_ |
1108 |
if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
188 |
ossman_ |
1083 |
break; |
189 |
ossman_ |
1081 |
update_position(hwnd); |
190 |
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break; |
191 |
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|
192 |
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case WM_MOVE: |
193 |
ossman_ |
1108 |
if (!(style & WS_VISIBLE) || (style & WS_MINIMIZE)) |
194 |
ossman_ |
1083 |
break; |
195 |
ossman_ |
1081 |
update_position(hwnd); |
196 |
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break; |
197 |
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|
198 |
ossman_ |
1134 |
case WM_DESTROY: |
199 |
|
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if (!(style & WS_VISIBLE)) |
200 |
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break; |
201 |
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vchannel_write("DESTROY,0x%p,0x%x", hwnd, 0); |
202 |
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break; |
203 |
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|
204 |
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default: |
205 |
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break; |
206 |
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} |
207 |
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|
208 |
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end: |
209 |
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return CallNextHookEx(g_wndproc_hook, code, cur_thread, details); |
210 |
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} |
211 |
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|
212 |
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static LRESULT CALLBACK |
213 |
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wndprocret_hook_proc(int code, WPARAM cur_thread, LPARAM details) |
214 |
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{ |
215 |
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HWND hwnd, parent; |
216 |
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UINT msg; |
217 |
|
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WPARAM wparam; |
218 |
|
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LPARAM lparam; |
219 |
|
|
|
220 |
|
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LONG style; |
221 |
|
|
|
222 |
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if (code < 0) |
223 |
|
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goto end; |
224 |
|
|
|
225 |
|
|
hwnd = ((CWPRETSTRUCT *) details)->hwnd; |
226 |
|
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msg = ((CWPRETSTRUCT *) details)->message; |
227 |
|
|
wparam = ((CWPRETSTRUCT *) details)->wParam; |
228 |
|
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lparam = ((CWPRETSTRUCT *) details)->lParam; |
229 |
|
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|
230 |
|
|
style = GetWindowLong(hwnd, GWL_STYLE); |
231 |
|
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|
232 |
|
|
/* Docs say that WS_CHILD and WS_POPUP is an illegal combination, |
233 |
|
|
but they exist nonetheless. */ |
234 |
|
|
if ((style & WS_CHILD) && !(style & WS_POPUP)) |
235 |
|
|
goto end; |
236 |
|
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|
237 |
ossman_ |
1158 |
if (style & WS_POPUP) |
238 |
|
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{ |
239 |
|
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parent = (HWND) GetWindowLong(hwnd, GWL_HWNDPARENT); |
240 |
|
|
if (!parent) |
241 |
|
|
parent = (HWND) - 1; |
242 |
|
|
} |
243 |
|
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else |
244 |
|
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parent = NULL; |
245 |
|
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|
246 |
ossman_ |
1134 |
switch (msg) |
247 |
|
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{ |
248 |
ossman_ |
1102 |
case WM_SETTEXT: |
249 |
ossman_ |
1113 |
{ |
250 |
ossman_ |
1134 |
unsigned short title[150]; |
251 |
ossman_ |
1113 |
if (!(style & WS_VISIBLE)) |
252 |
|
|
break; |
253 |
ossman_ |
1134 |
/* We cannot use the string in lparam because |
254 |
|
|
we need unicode. */ |
255 |
|
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GetWindowTextW(hwnd, title, sizeof(title) / sizeof(*title)); |
256 |
ossman_ |
1113 |
vchannel_write("TITLE,0x%p,%s,0x%x", hwnd, |
257 |
ossman_ |
1134 |
vchannel_strfilter_unicode(title), 0); |
258 |
ossman_ |
1102 |
break; |
259 |
ossman_ |
1113 |
} |
260 |
ossman_ |
1102 |
|
261 |
ossman_ |
1071 |
default: |
262 |
|
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break; |
263 |
|
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} |
264 |
|
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|
265 |
ossman_ |
1153 |
if (msg == g_wm_seamless_focus) |
266 |
ossman_ |
1158 |
{ |
267 |
|
|
/* FIXME: SetActiveWindow() kills menus. Need to find a clean |
268 |
|
|
way to solve this. */ |
269 |
|
|
if ((GetActiveWindow() != hwnd) && !parent) |
270 |
|
|
SetActiveWindow(hwnd); |
271 |
|
|
} |
272 |
ossman_ |
1153 |
|
273 |
ossman_ |
1071 |
end: |
274 |
ossman_ |
1134 |
return CallNextHookEx(g_wndprocret_hook, code, cur_thread, details); |
275 |
ossman_ |
1069 |
} |
276 |
|
|
|
277 |
ossman_ |
1071 |
static LRESULT CALLBACK |
278 |
|
|
cbt_hook_proc(int code, WPARAM wparam, LPARAM lparam) |
279 |
ossman_ |
1069 |
{ |
280 |
ossman_ |
1071 |
if (code < 0) |
281 |
|
|
goto end; |
282 |
ossman_ |
1069 |
|
283 |
ossman_ |
1071 |
switch (code) |
284 |
|
|
{ |
285 |
|
|
case HCBT_MINMAX: |
286 |
|
|
{ |
287 |
ossman_ |
1079 |
int show, state; |
288 |
ossman_ |
1069 |
|
289 |
ossman_ |
1071 |
show = LOWORD(lparam); |
290 |
ossman_ |
1069 |
|
291 |
ossman_ |
1128 |
if ((show == SW_NORMAL) || (show == SW_SHOWNORMAL) |
292 |
|
|
|| (show == SW_RESTORE)) |
293 |
ossman_ |
1079 |
state = 0; |
294 |
ossman_ |
1106 |
else if ((show == SW_MINIMIZE) || (show == SW_SHOWMINIMIZED)) |
295 |
ossman_ |
1079 |
state = 1; |
296 |
ossman_ |
1106 |
else if ((show == SW_MAXIMIZE) || (show == SW_SHOWMAXIMIZED)) |
297 |
ossman_ |
1079 |
state = 2; |
298 |
ossman_ |
1100 |
else |
299 |
ossman_ |
1106 |
{ |
300 |
|
|
debug("Unexpected show: %d", show); |
301 |
ossman_ |
1100 |
break; |
302 |
ossman_ |
1106 |
} |
303 |
ossman_ |
1096 |
vchannel_write("STATE,0x%p,0x%x,0x%x", (HWND) wparam, state, 0); |
304 |
ossman_ |
1071 |
break; |
305 |
|
|
} |
306 |
ossman_ |
1069 |
|
307 |
ossman_ |
1071 |
default: |
308 |
|
|
break; |
309 |
|
|
} |
310 |
ossman_ |
1069 |
|
311 |
ossman_ |
1071 |
end: |
312 |
|
|
return CallNextHookEx(g_cbt_hook, code, wparam, lparam); |
313 |
ossman_ |
1069 |
} |
314 |
|
|
|
315 |
ossman_ |
1071 |
DLL_EXPORT void |
316 |
|
|
SetHooks(void) |
317 |
ossman_ |
1069 |
{ |
318 |
ossman_ |
1071 |
if (!g_cbt_hook) |
319 |
|
|
g_cbt_hook = SetWindowsHookEx(WH_CBT, cbt_hook_proc, g_instance, 0); |
320 |
ossman_ |
1069 |
|
321 |
ossman_ |
1071 |
if (!g_wndproc_hook) |
322 |
|
|
g_wndproc_hook = SetWindowsHookEx(WH_CALLWNDPROC, wndproc_hook_proc, g_instance, 0); |
323 |
ossman_ |
1134 |
|
324 |
|
|
if (!g_wndprocret_hook) |
325 |
|
|
g_wndprocret_hook = |
326 |
|
|
SetWindowsHookEx(WH_CALLWNDPROCRET, wndprocret_hook_proc, g_instance, 0); |
327 |
ossman_ |
1069 |
} |
328 |
|
|
|
329 |
ossman_ |
1071 |
DLL_EXPORT void |
330 |
|
|
RemoveHooks(void) |
331 |
ossman_ |
1069 |
{ |
332 |
ossman_ |
1071 |
if (g_cbt_hook) |
333 |
|
|
UnhookWindowsHookEx(g_cbt_hook); |
334 |
ossman_ |
1069 |
|
335 |
ossman_ |
1071 |
if (g_wndproc_hook) |
336 |
|
|
UnhookWindowsHookEx(g_wndproc_hook); |
337 |
ossman_ |
1134 |
|
338 |
|
|
if (g_wndprocret_hook) |
339 |
|
|
UnhookWindowsHookEx(g_wndprocret_hook); |
340 |
ossman_ |
1069 |
} |
341 |
|
|
|
342 |
ossman_ |
1145 |
DLL_EXPORT void |
343 |
|
|
SafeMoveWindow(HWND hwnd, int x, int y, int width, int height) |
344 |
|
|
{ |
345 |
|
|
WaitForSingleObject(g_mutex, INFINITE); |
346 |
|
|
g_block_move.left = x; |
347 |
|
|
g_block_move.top = y; |
348 |
|
|
g_block_move.right = x + width; |
349 |
|
|
g_block_move.bottom = y + height; |
350 |
|
|
ReleaseMutex(g_mutex); |
351 |
|
|
|
352 |
|
|
SetWindowPos(hwnd, NULL, x, y, width, height, SWP_NOACTIVATE | SWP_NOZORDER); |
353 |
|
|
|
354 |
|
|
WaitForSingleObject(g_mutex, INFINITE); |
355 |
|
|
memset(&g_block_move, 0, sizeof(RECT)); |
356 |
|
|
ReleaseMutex(g_mutex); |
357 |
|
|
} |
358 |
|
|
|
359 |
ossman_ |
1158 |
DLL_EXPORT void |
360 |
|
|
SafeZChange(HWND hwnd, HWND behind) |
361 |
|
|
{ |
362 |
|
|
if (behind == NULL) |
363 |
|
|
behind = HWND_TOP; |
364 |
|
|
|
365 |
|
|
WaitForSingleObject(g_mutex, INFINITE); |
366 |
|
|
g_blocked_zchange[0] = hwnd; |
367 |
|
|
g_blocked_zchange[1] = behind; |
368 |
|
|
ReleaseMutex(g_mutex); |
369 |
|
|
|
370 |
|
|
SetWindowPos(hwnd, behind, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE); |
371 |
|
|
|
372 |
|
|
WaitForSingleObject(g_mutex, INFINITE); |
373 |
|
|
g_blocked_zchange[0] = NULL; |
374 |
|
|
g_blocked_zchange[1] = NULL; |
375 |
|
|
ReleaseMutex(g_mutex); |
376 |
|
|
} |
377 |
|
|
|
378 |
|
|
DLL_EXPORT void |
379 |
|
|
SafeFocus(HWND hwnd) |
380 |
|
|
{ |
381 |
|
|
WaitForSingleObject(g_mutex, INFINITE); |
382 |
|
|
g_blocked_focus = hwnd; |
383 |
|
|
ReleaseMutex(g_mutex); |
384 |
|
|
|
385 |
|
|
SendMessage(hwnd, g_wm_seamless_focus, 0, 0); |
386 |
|
|
|
387 |
|
|
WaitForSingleObject(g_mutex, INFINITE); |
388 |
|
|
g_blocked_focus = NULL; |
389 |
|
|
ReleaseMutex(g_mutex); |
390 |
|
|
} |
391 |
|
|
|
392 |
ossman_ |
1071 |
DLL_EXPORT int |
393 |
|
|
GetInstanceCount() |
394 |
ossman_ |
1069 |
{ |
395 |
ossman_ |
1071 |
return g_instance_count; |
396 |
ossman_ |
1069 |
} |
397 |
|
|
|
398 |
ossman_ |
1071 |
BOOL APIENTRY |
399 |
|
|
DllMain(HINSTANCE hinstDLL, DWORD ul_reason_for_call, LPVOID lpReserved) |
400 |
ossman_ |
1069 |
{ |
401 |
ossman_ |
1071 |
switch (ul_reason_for_call) |
402 |
|
|
{ |
403 |
|
|
case DLL_PROCESS_ATTACH: |
404 |
|
|
// remember our instance handle |
405 |
|
|
g_instance = hinstDLL; |
406 |
ossman_ |
1069 |
|
407 |
ossman_ |
1073 |
g_mutex = CreateMutex(NULL, FALSE, "Local\\SeamlessDLL"); |
408 |
ossman_ |
1071 |
if (!g_mutex) |
409 |
|
|
return FALSE; |
410 |
ossman_ |
1069 |
|
411 |
ossman_ |
1071 |
WaitForSingleObject(g_mutex, INFINITE); |
412 |
|
|
++g_instance_count; |
413 |
|
|
ReleaseMutex(g_mutex); |
414 |
ossman_ |
1069 |
|
415 |
ossman_ |
1153 |
g_wm_seamless_focus = RegisterWindowMessage(FOCUS_MSG_NAME); |
416 |
|
|
|
417 |
ossman_ |
1071 |
vchannel_open(); |
418 |
ossman_ |
1069 |
|
419 |
ossman_ |
1071 |
break; |
420 |
ossman_ |
1069 |
|
421 |
ossman_ |
1071 |
case DLL_THREAD_ATTACH: |
422 |
|
|
break; |
423 |
ossman_ |
1069 |
|
424 |
ossman_ |
1071 |
case DLL_THREAD_DETACH: |
425 |
|
|
break; |
426 |
ossman_ |
1069 |
|
427 |
ossman_ |
1071 |
case DLL_PROCESS_DETACH: |
428 |
|
|
WaitForSingleObject(g_mutex, INFINITE); |
429 |
|
|
--g_instance_count; |
430 |
|
|
ReleaseMutex(g_mutex); |
431 |
ossman_ |
1069 |
|
432 |
ossman_ |
1071 |
vchannel_close(); |
433 |
ossman_ |
1069 |
|
434 |
ossman_ |
1071 |
CloseHandle(g_mutex); |
435 |
ossman_ |
1069 |
|
436 |
ossman_ |
1071 |
break; |
437 |
|
|
} |
438 |
ossman_ |
1069 |
|
439 |
ossman_ |
1071 |
return TRUE; |
440 |
ossman_ |
1069 |
} |