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)
 188         {
 189             SetProcessWindowStation( handle );
 190             /* only WinSta0 is visible */
 191             if (!winstation || !strcmpiW( winstation, WinSta0 ))
 192             {
 193                 USEROBJECTFLAGS flags;
 194                 flags.fInherit  = FALSE;
 195                 flags.fReserved = FALSE;
 196                 flags.dwFlags   = WSF_VISIBLE;
 197                 SetUserObjectInformationW( handle, UOI_FLAGS, &flags, sizeof(flags) );
 198             }
 199         }
 200     }
 201     if (buffer || !GetThreadDesktop( GetCurrentThreadId() ))
 202     {
 203         handle = CreateDesktopW( desktop ? desktop : Default, NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
 204         if (handle) SetThreadDesktop( handle );
 205     }
 206     HeapFree( GetProcessHeap(), 0, buffer );
 207 }
 208
 209
 210 /***********************************************************************
 211  *           USER initialisation routine
 212  */
 213 static BOOL process_attach(void)
 214 {
 215     HINSTANCE16 instance;
 216
 217     /* Create USER heap */
 218     if ((instance = LoadLibrary16( "USER.EXE" )) >= 32) USER_HeapSel = instance | 7;
 219     else
 220     {
 221         USER_HeapSel = GlobalAlloc16( GMEM_FIXED, 65536 );
 222         LocalInit16( USER_HeapSel, 32, 65534 );
 223     }
 224
 225     /* some Win9x dlls expect keyboard to be loaded */
 226     if (GetVersion() & 0x80000000) LoadLibrary16( "keyboard.drv" );
 227
 228     winstation_init();
 229
 230     /* Initialize system colors and metrics */
 231     SYSPARAMS_Init();
 232
 233     /* Setup palette function pointers */
 234     palette_init();
 235
 236     /* Initialize built-in window classes */
 237     CLASS_RegisterBuiltinClasses();
 238
 239     /* Initialize message spying */
 240     if (!SPY_Init()) return FALSE;
 241
 242     return TRUE;
 243 }
 244
 245
 246 /**********************************************************************
 247  *           USER_IsExitingThread
 248  */
 249 BOOL USER_IsExitingThread( DWORD tid )
 250 {
 251     return (tid == exiting_thread_id);
 252 }
 253
 254
 255 /**********************************************************************
 256  *           thread_detach
 257  */
 258 static void thread_detach(void)
 259 {
 260     exiting_thread_id = GetCurrentThreadId();
 261
 262     WDML_NotifyThreadDetach();
 263
 264     WIN_DestroyThreadWindows( get_user_thread_info()->desktop );
 265     CloseHandle( get_user_thread_info()->server_queue );
 266     HeapFree( GetProcessHeap(), 0, get_user_thread_info()->wmchar_data );
 267
 268     exiting_thread_id = 0;
 269 }
 270
 271
 272 /***********************************************************************
 273  *           UserClientDllInitialize  (USER32.@)
 274  *
 275  * USER dll initialisation routine (exported as UserClientDllInitialize for compatibility).
 276  */
 277 BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved )
 278 {
 279     BOOL ret = TRUE;
 280     switch(reason)
 281     {
 282     case DLL_PROCESS_ATTACH:
 283         user32_module = inst;
 284         ret = process_attach();
 285         break;
 286     case DLL_THREAD_DETACH:
 287         thread_detach();
 288         break;
 289     case DLL_PROCESS_DETACH:
 290         USER_unload_driver();
 291         break;
 292     }
 293     return ret;
 294 }
 295
 296
 297 /***********************************************************************
 298  *              ExitWindowsEx (USER32.@)
 299  */
 300 BOOL WINAPI ExitWindowsEx( UINT flags, DWORD reason )
 301 {
 302     static const WCHAR winebootW[]    = { '\\','w','i','n','e','b','o','o','t','.','e','x','e',0 };
 303     static const WCHAR killW[]        = { ' ','-','-','k','i','l','l',0 };
 304     static const WCHAR end_sessionW[] = { ' ','-','-','e','n','d','-','s','e','s','s','i','o','n',0 };
 305     static const WCHAR forceW[]       = { ' ','-','-','f','o','r','c','e',0 };
 306     static const WCHAR shutdownW[]    = { ' ','-','-','s','h','u','t','d','o','w','n',0 };
 307
 308     WCHAR cmdline[MAX_PATH + 64];
 309     PROCESS_INFORMATION pi;
 310     STARTUPINFOW si;
 311
 312     GetSystemDirectoryW( cmdline, MAX_PATH );
 313     lstrcatW( cmdline, winebootW );
 314
 315     if (flags & EWX_FORCE) lstrcatW( cmdline, killW );
 316     else
 317     {
 318         lstrcatW( cmdline, end_sessionW );
 319         if (flags & EWX_FORCEIFHUNG) lstrcatW( cmdline, forceW );
 320     }
 321     if (!(flags & EWX_REBOOT)) lstrcatW( cmdline, shutdownW );
 322
 323     memset( &si, 0, sizeof si );
 324     si.cb = sizeof si;
 325     if (!CreateProcessW( NULL, cmdline, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &si, &pi ))
 326     {
 327         ERR( "Failed to run %s\n", debugstr_w(cmdline) );
 328         return FALSE;
 329     }
 330     CloseHandle( pi.hProcess );
 331     CloseHandle( pi.hThread );
 332     return TRUE;
 333 }
 334
 335 /***********************************************************************
 336  *              RegisterServicesProcess (USER32.@)
 337  */
 338 int WINAPI RegisterServicesProcess(DWORD ServicesProcessId)
 339 {
 340     FIXME("(0x%x): stub\n", ServicesProcessId);
 341     return 0;
 342 }