dlls/user32/user_main.c

   1 /*
   2  * USER initialization code
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wingdi.h"
  27 #include "winuser.h"
  28
  29 #include "controls.h"
  30 #include "user_private.h"
  31 #include "win.h"
  32 #include "wine/unicode.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(graphics);
  36
  37 #define DESKTOP_ALL_ACCESS 0x01ff
  38
  39 WORD USER_HeapSel = 0;  /* USER heap selector */
  40 HMODULE user32_module = 0;
  41
  42 static SYSLEVEL USER_SysLevel;
  43 static CRITICAL_SECTION_DEBUG critsect_debug =
  44 {
  45     0, 0, &USER_SysLevel.crst,
  46     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  47       0, 0, { (DWORD_PTR)(__FILE__ ": USER_SysLevel") }
  48 };
  49 static SYSLEVEL USER_SysLevel = { { &critsect_debug, -1, 0, 0, 0, 0 }, 2 };
  50
  51 static HPALETTE (WINAPI *pfnGDISelectPalette)( HDC hdc, HPALETTE hpal, WORD bkgnd );
  52 static UINT (WINAPI *pfnGDIRealizePalette)( HDC hdc );
  53 static HPALETTE hPrimaryPalette;
  54
  55 static DWORD exiting_thread_id;
  56
  57 extern void WDML_NotifyThreadDetach(void);
  58
  59
  60 /***********************************************************************
  61  *           USER_Lock
  62  */
  63 void USER_Lock(void)
  64 {
  65     _EnterSysLevel( &USER_SysLevel );
  66 }
  67
  68
  69 /***********************************************************************
  70  *           USER_Unlock
  71  */
  72 void USER_Unlock(void)
  73 {
  74     _LeaveSysLevel( &USER_SysLevel );
  75 }
  76
  77
  78 /***********************************************************************
  79  *           USER_CheckNotLock
  80  *
  81  * Make sure that we don't hold the user lock.
  82  */
  83 void USER_CheckNotLock(void)
  84 {
  85     _CheckNotSysLevel( &USER_SysLevel );
  86 }
  87
  88
  89 /***********************************************************************
  90  *              UserSelectPalette (Not a Windows API)
  91  */
  92 static HPALETTE WINAPI UserSelectPalette( HDC hDC, HPALETTE hPal, BOOL bForceBackground )
  93 {
  94     WORD wBkgPalette = 1;
  95
  96     if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
  97     {
  98         HWND hwnd = WindowFromDC( hDC );
  99         if (hwnd)
 100         {
 101             HWND hForeground = GetForegroundWindow();
 102             /* set primary palette if it's related to current active */
 103             if (hForeground == hwnd || IsChild(hForeground,hwnd))
 104             {
 105                 wBkgPalette = 0;
 106                 hPrimaryPalette = hPal;
 107             }
 108         }
 109     }
 110     return pfnGDISelectPalette( hDC, hPal, wBkgPalette);
 111 }
 112
 113
 114 /***********************************************************************
 115  *              UserRealizePalette (USER32.@)
 116  */
 117 UINT WINAPI UserRealizePalette( HDC hDC )
 118 {
 119     UINT realized = pfnGDIRealizePalette( hDC );
 120
 121     /* do not send anything if no colors were changed */
 122     if (realized && GetCurrentObject( hDC, OBJ_PAL ) == hPrimaryPalette)
 123     {
 124         /* send palette change notification */
 125         HWND hWnd = WindowFromDC( hDC );
 126         if (hWnd) SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0,
 127                                        SMTO_ABORTIFHUNG, 2000, NULL );
 128     }
 129     return realized;
 130 }
 131
 132
 133 /***********************************************************************
 134  *           palette_init
 135  *
 136  * Patch the function pointers in GDI for SelectPalette and RealizePalette
 137  */
 138 static void palette_init(void)
 139 {
 140     void **ptr;
 141     HMODULE module = GetModuleHandleA( "gdi32" );
 142     if (!module)
 143     {
 144         ERR( "cannot get GDI32 handle\n" );
 145         return;
 146     }
 147     if ((ptr = (void**)GetProcAddress( module, "pfnSelectPalette" )))
 148         pfnGDISelectPalette = InterlockedExchangePointer( ptr, UserSelectPalette );
 149     else ERR( "cannot find pfnSelectPalette in GDI32\n" );
 150     if ((ptr = (void**)GetProcAddress( module, "pfnRealizePalette" )))
 151         pfnGDIRealizePalette = InterlockedExchangePointer( ptr, UserRealizePalette );
 152     else ERR( "cannot find pfnRealizePalette in GDI32\n" );
 153 }
 154
 155
 156 /***********************************************************************
 157  *           winstation_init
 158  *
 159  * Connect to the process window station and desktop.
 160  */
 161 static void winstation_init(void)
 162 {
 163     static const WCHAR WinSta0[] = {'W','i','n','S','t','a','0',0};
 164     static const WCHAR Default[] = {'D','e','f','a','u','l','t',0};
 165
 166     STARTUPINFOW info;
 167     WCHAR *winstation = NULL, *desktop = NULL, *buffer = NULL;
 168     HANDLE handle;
 169
 170     GetStartupInfoW( &info );
 171     if (info.lpDesktop && *info.lpDesktop)
 172     {
 173         buffer = HeapAlloc( GetProcessHeap(), 0, (strlenW(info.lpDesktop) + 1) * sizeof(WCHAR) );
 174         strcpyW( buffer, info.lpDesktop );
 175         if ((desktop = strchrW( buffer, '\\' )))
 176         {
 177             *desktop++ = 0;
 178             winstation = buffer;
 179         }
 180         else desktop = buffer;
 181     }
 182
 183     /* set winstation if explicitly specified, or if we don't have one yet */
 184     if (buffer || !GetProcessWindowStation())
 185     {
 186         handle = CreateWindowStationW( winstation ? winstation : WinSta0, 0, WINSTA_ALL_ACCESS, NULL );
 187         if (handle) SetProcessWindowStation( handle );
 188     }
 189     if (buffer || !GetThreadDesktop( GetCurrentThreadId() ))
 190     {
 191         handle = CreateDesktopW( desktop ? desktop : Default, NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
 192         if (handle) SetThreadDesktop( handle );
 193     }
 194     HeapFree( GetProcessHeap(), 0, buffer );
 195 }
 196
 197
 198 /***********************************************************************
 199  *           USER initialisation routine
 200  */
 201 static BOOL process_attach(void)
 202 {
 203     HINSTANCE16 instance;
 204
 205     /* Create USER heap */
 206     if ((instance = LoadLibrary16( "USER.EXE" )) >= 32) USER_HeapSel = instance | 7;
 207     else
 208     {
 209         USER_HeapSel = GlobalAlloc16( GMEM_FIXED, 65536 );
 210         LocalInit16( USER_HeapSel, 32, 65534 );
 211     }
 212
 213     /* some Win9x dlls expect keyboard to be loaded */
 214     if (GetVersion() & 0x80000000) LoadLibrary16( "keyboard.drv" );
 215
 216     winstation_init();
 217
 218     /* Initialize system colors and metrics */
 219     SYSPARAMS_Init();
 220
 221     /* Setup palette function pointers */
 222     palette_init();
 223
 224     /* Initialize built-in window classes */
 225     CLASS_RegisterBuiltinClasses();
 226
 227     /* Initialize message spying */
 228     if (!SPY_Init()) return FALSE;
 229
 230     return TRUE;
 231 }
 232
 233
 234 /**********************************************************************
 235  *           USER_IsExitingThread
 236  */
 237 BOOL USER_IsExitingThread( DWORD tid )
 238 {
 239     return (tid == exiting_thread_id);
 240 }
 241
 242
 243 /**********************************************************************
 244  *           thread_detach
 245  */
 246 static void thread_detach(void)
 247 {
 248     exiting_thread_id = GetCurrentThreadId();
 249
 250     WDML_NotifyThreadDetach();
 251
 252     WIN_DestroyThreadWindows( get_user_thread_info()->desktop );
 253     CloseHandle( get_user_thread_info()->server_queue );
 254     HeapFree( GetProcessHeap(), 0, get_user_thread_info()->wmchar_data );
 255
 256     exiting_thread_id = 0;
 257 }
 258
 259
 260 /***********************************************************************
 261  *           UserClientDllInitialize  (USER32.@)
 262  *
 263  * USER dll initialisation routine (exported as UserClientDllInitialize for compatibility).
 264  */
 265 BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved )
 266 {
 267     BOOL ret = TRUE;
 268     switch(reason)
 269     {
 270     case DLL_PROCESS_ATTACH:
 271         user32_module = inst;
 272         ret = process_attach();
 273         break;
 274     case DLL_THREAD_DETACH:
 275         thread_detach();
 276         break;
 277     case DLL_PROCESS_DETACH:
 278         USER_unload_driver();
 279         break;
 280     }
 281     return ret;
 282 }
 283
 284
 285 /***********************************************************************
 286  *              ExitWindowsEx (USER32.@)
 287  */
 288 BOOL WINAPI ExitWindowsEx( UINT flags, DWORD reason )
 289 {
 290     static const WCHAR winebootW[]    = { '\\','w','i','n','e','b','o','o','t','.','e','x','e',0 };
 291     static const WCHAR killW[]        = { ' ','-','-','k','i','l','l',0 };
 292     static const WCHAR end_sessionW[] = { ' ','-','-','e','n','d','-','s','e','s','s','i','o','n',0 };
 293     static const WCHAR forceW[]       = { ' ','-','-','f','o','r','c','e',0 };
 294     static const WCHAR shutdownW[]    = { ' ','-','-','s','h','u','t','d','o','w','n',0 };
 295
 296     WCHAR cmdline[MAX_PATH + 64];
 297     PROCESS_INFORMATION pi;
 298     STARTUPINFOW si;
 299
 300     GetSystemDirectoryW( cmdline, MAX_PATH );
 301     lstrcatW( cmdline, winebootW );
 302
 303     if (flags & EWX_FORCE) lstrcatW( cmdline, killW );
 304     else
 305     {
 306         lstrcatW( cmdline, end_sessionW );
 307         if (flags & EWX_FORCEIFHUNG) lstrcatW( cmdline, forceW );
 308     }
 309     if (!(flags & EWX_REBOOT)) lstrcatW( cmdline, shutdownW );
 310
 311     memset( &si, 0, sizeof si );
 312     si.cb = sizeof si;
 313     if (!CreateProcessW( NULL, cmdline, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &si, &pi ))
 314     {
 315         ERR( "Failed to run %s\n", debugstr_w(cmdline) );
 316         return FALSE;
 317     }
 318     CloseHandle( pi.hProcess );
 319     CloseHandle( pi.hThread );
 320     return TRUE;
 321 }