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 #include "winreg.h"
  29
  30 #include "controls.h"
  31 #include "user_private.h"
  32 #include "win.h"
  33 #include "wine/unicode.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(graphics);
  37
  38 #define DESKTOP_ALL_ACCESS 0x01ff
  39
  40 WORD USER_HeapSel = 0;  /* USER heap selector */
  41 HMODULE user32_module = 0;
  42
  43 static SYSLEVEL USER_SysLevel;
  44 static CRITICAL_SECTION_DEBUG critsect_debug =
  45 {
  46     0, 0, &USER_SysLevel.crst,
  47     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  48       0, 0, { (DWORD_PTR)(__FILE__ ": USER_SysLevel") }
  49 };
  50 static SYSLEVEL USER_SysLevel = { { &critsect_debug, -1, 0, 0, 0, 0 }, 2 };
  51
  52 static HPALETTE (WINAPI *pfnGDISelectPalette)( HDC hdc, HPALETTE hpal, WORD bkgnd );
  53 static UINT (WINAPI *pfnGDIRealizePalette)( HDC hdc );
  54 static HPALETTE hPrimaryPalette;
  55
  56 static DWORD exiting_thread_id;
  57
  58 extern void WDML_NotifyThreadDetach(void);
  59
  60
  61 /***********************************************************************
  62  *           USER_Lock
  63  */
  64 void USER_Lock(void)
  65 {
  66     _EnterSysLevel( &USER_SysLevel );
  67 }
  68
  69
  70 /***********************************************************************
  71  *           USER_Unlock
  72  */
  73 void USER_Unlock(void)
  74 {
  75     _LeaveSysLevel( &USER_SysLevel );
  76 }
  77
  78
  79 /***********************************************************************
  80  *           USER_CheckNotLock
  81  *
  82  * Make sure that we don't hold the user lock.
  83  */
  84 void USER_CheckNotLock(void)
  85 {
  86     _CheckNotSysLevel( &USER_SysLevel );
  87 }
  88
  89
  90 /***********************************************************************
  91  *              UserSelectPalette (Not a Windows API)
  92  */
  93 static HPALETTE WINAPI UserSelectPalette( HDC hDC, HPALETTE hPal, BOOL bForceBackground )
  94 {
  95     WORD wBkgPalette = 1;
  96
  97     if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
  98     {
  99         HWND hwnd = WindowFromDC( hDC );
 100         if (hwnd)
 101         {
 102             HWND hForeground = GetForegroundWindow();
 103             /* set primary palette if it's related to current active */
 104             if (hForeground == hwnd || IsChild(hForeground,hwnd))
 105             {
 106                 wBkgPalette = 0;
 107                 hPrimaryPalette = hPal;
 108             }
 109         }
 110     }
 111     return pfnGDISelectPalette( hDC, hPal, wBkgPalette);
 112 }
 113
 114
 115 /***********************************************************************
 116  *              UserRealizePalette (USER32.@)
 117  */
 118 UINT WINAPI UserRealizePalette( HDC hDC )
 119 {
 120     UINT realized = pfnGDIRealizePalette( hDC );
 121
 122     /* do not send anything if no colors were changed */
 123     if (realized && GetCurrentObject( hDC, OBJ_PAL ) == hPrimaryPalette)
 124     {
 125         /* send palette change notification */
 126         HWND hWnd = WindowFromDC( hDC );
 127         if (hWnd) SendMessageTimeoutW( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0,
 128                                        SMTO_ABORTIFHUNG, 2000, NULL );
 129     }
 130     return realized;
 131 }
 132
 133
 134 /***********************************************************************
 135  *           palette_init
 136  *
 137  * Patch the function pointers in GDI for SelectPalette and RealizePalette
 138  */
 139 static void palette_init(void)
 140 {
 141     void **ptr;
 142     HMODULE module = GetModuleHandleA( "gdi32" );
 143     if (!module)
 144     {
 145         ERR( "cannot get GDI32 handle\n" );
 146         return;
 147     }
 148     if ((ptr = (void**)GetProcAddress( module, "pfnSelectPalette" )))
 149         pfnGDISelectPalette = InterlockedExchangePointer( ptr, UserSelectPalette );
 150     else ERR( "cannot find pfnSelectPalette in GDI32\n" );
 151     if ((ptr = (void**)GetProcAddress( module, "pfnRealizePalette" )))
 152         pfnGDIRealizePalette = InterlockedExchangePointer( ptr, UserRealizePalette );
 153     else ERR( "cannot find pfnRealizePalette in GDI32\n" );
 154 }
 155
 156
 157 /***********************************************************************
 158  *           winstation_init
 159  *
 160  * Connect to the process window station and desktop.
 161  */
 162 static void winstation_init(void)
 163 {
 164     static const WCHAR WinSta0[] = {'W','i','n','S','t','a','0',0};
 165     static const WCHAR Default[] = {'D','e','f','a','u','l','t',0};
 166
 167     STARTUPINFOW info;
 168     WCHAR *winstation = NULL, *desktop = NULL, *buffer = NULL;
 169     HANDLE handle;
 170
 171     GetStartupInfoW( &info );
 172     if (info.lpDesktop && *info.lpDesktop)
 173     {
 174         buffer = HeapAlloc( GetProcessHeap(), 0, (strlenW(info.lpDesktop) + 1) * sizeof(WCHAR) );
 175         strcpyW( buffer, info.lpDesktop );
 176         if ((desktop = strchrW( buffer, '\\' )))
 177         {
 178             *desktop++ = 0;
 179             winstation = buffer;
 180         }
 181         else desktop = buffer;
 182     }
 183
 184     /* set winstation if explicitly specified, or if we don't have one yet */
 185     if (buffer || !GetProcessWindowStation())
 186     {
 187         handle = CreateWindowStationW( winstation ? winstation : WinSta0, 0, WINSTA_ALL_ACCESS, NULL );
 188         if (handle) SetProcessWindowStation( handle );
 189     }
 190     if (buffer || !GetThreadDesktop( GetCurrentThreadId() ))
 191     {
 192         handle = CreateDesktopW( desktop ? desktop : Default, NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
 193         if (handle) SetThreadDesktop( handle );
 194     }
 195     HeapFree( GetProcessHeap(), 0, buffer );
 196 }
 197
 198
 199 /***********************************************************************
 200  *           USER initialisation routine
 201  */
 202 static BOOL process_attach(void)
 203 {
 204     HINSTANCE16 instance;
 205
 206     /* Create USER heap */
 207     if ((instance = LoadLibrary16( "USER.EXE" )) >= 32) USER_HeapSel = instance | 7;
 208     else
 209     {
 210         USER_HeapSel = GlobalAlloc16( GMEM_FIXED, 65536 );
 211         LocalInit16( USER_HeapSel, 32, 65534 );
 212     }
 213
 214     /* some Win9x dlls expect keyboard to be loaded */
 215     if (GetVersion() & 0x80000000) LoadLibrary16( "keyboard.drv" );
 216
 217     winstation_init();
 218
 219     /* Initialize system colors and metrics */
 220     SYSPARAMS_Init();
 221
 222     /* Setup palette function pointers */
 223     palette_init();
 224
 225     /* Initialize built-in window classes */
 226     CLASS_RegisterBuiltinClasses();
 227
 228     /* Initialize message spying */
 229     if (!SPY_Init()) return FALSE;
 230
 231     return TRUE;
 232 }
 233
 234
 235 /**********************************************************************
 236  *           USER_IsExitingThread
 237  */
 238 BOOL USER_IsExitingThread( DWORD tid )
 239 {
 240     return (tid == exiting_thread_id);
 241 }
 242
 243
 244 /**********************************************************************
 245  *           thread_detach
 246  */
 247 static void thread_detach(void)
 248 {
 249     exiting_thread_id = GetCurrentThreadId();
 250
 251     WDML_NotifyThreadDetach();
 252
 253     WIN_DestroyThreadWindows( get_user_thread_info()->desktop );
 254     CloseHandle( get_user_thread_info()->server_queue );
 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 }