Wine Cross Reference
wine/dlls/user32/driver.c

   /*
    * USER driver support
    *
    * Copyright 2000, 2005 Alexandre Julliard
    *
    * This library is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Lesser General Public
    * License as published by the Free Software Foundation; either
    * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include <stdarg.h>
  #include <stdio.h>
  #include "windef.h"
  #include "winbase.h"
  #include "winuser.h"
  #include "wine/debug.h"
  
  #include "user_private.h"
  
  static USER_DRIVER null_driver, lazy_load_driver;
  
  const USER_DRIVER *USER_Driver = &lazy_load_driver;
  static DWORD driver_load_error;
  
  /* load the graphics driver */
  static const USER_DRIVER *load_driver(void)
  {
      char buffer[MAX_PATH], libname[32], *name, *next;
      HKEY hkey;
      void *ptr;
      HMODULE graphics_driver;
      USER_DRIVER *driver, *prev;
  
      strcpy( buffer, "x11" );  /* default value */
      /* @@ Wine registry key: HKCU\Software\Wine\Drivers */
      if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
      {
          DWORD type, count = sizeof(buffer);
          RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
          RegCloseKey( hkey );
      }
  
      name = buffer;
      while (name)
      {
          next = strchr( name, ',' );
          if (next) *next++ = 0;
  
          snprintf( libname, sizeof(libname), "wine%s.drv", name );
          if ((graphics_driver = LoadLibraryA( libname )) != 0) break;
          name = next;
      }
  
      if (!graphics_driver)
          driver_load_error = GetLastError();
  
      driver = HeapAlloc( GetProcessHeap(), 0, sizeof(*driver) );
      *driver = null_driver;
  
      if (graphics_driver)
      {
  #define GET_USER_FUNC(name) \
      do { if ((ptr = GetProcAddress( graphics_driver, #name ))) driver->p##name = ptr; } while(0)
  
          GET_USER_FUNC(ActivateKeyboardLayout);
          GET_USER_FUNC(Beep);
          GET_USER_FUNC(GetAsyncKeyState);
          GET_USER_FUNC(GetKeyNameText);
          GET_USER_FUNC(GetKeyboardLayout);
          GET_USER_FUNC(GetKeyboardLayoutName);
          GET_USER_FUNC(LoadKeyboardLayout);
          GET_USER_FUNC(MapVirtualKeyEx);
          GET_USER_FUNC(SendInput);
          GET_USER_FUNC(ToUnicodeEx);
          GET_USER_FUNC(UnloadKeyboardLayout);
          GET_USER_FUNC(VkKeyScanEx);
          GET_USER_FUNC(CreateCursorIcon);
          GET_USER_FUNC(DestroyCursorIcon);
          GET_USER_FUNC(SetCursor);
          GET_USER_FUNC(GetCursorPos);
          GET_USER_FUNC(SetCursorPos);
          GET_USER_FUNC(ClipCursor);
          GET_USER_FUNC(GetScreenSaveActive);
          GET_USER_FUNC(SetScreenSaveActive);
          GET_USER_FUNC(AcquireClipboard);
          GET_USER_FUNC(EmptyClipboard);
          GET_USER_FUNC(SetClipboardData);
          GET_USER_FUNC(GetClipboardData);
          GET_USER_FUNC(CountClipboardFormats);
         GET_USER_FUNC(EnumClipboardFormats);
         GET_USER_FUNC(IsClipboardFormatAvailable);
         GET_USER_FUNC(RegisterClipboardFormat);
         GET_USER_FUNC(GetClipboardFormatName);
         GET_USER_FUNC(EndClipboardUpdate);
         GET_USER_FUNC(ChangeDisplaySettingsEx);
         GET_USER_FUNC(EnumDisplayMonitors);
         GET_USER_FUNC(EnumDisplaySettingsEx);
         GET_USER_FUNC(GetMonitorInfo);
         GET_USER_FUNC(CreateDesktopWindow);
         GET_USER_FUNC(CreateWindow);
         GET_USER_FUNC(DestroyWindow);
         GET_USER_FUNC(GetDC);
         GET_USER_FUNC(MsgWaitForMultipleObjectsEx);
         GET_USER_FUNC(ReleaseDC);
         GET_USER_FUNC(ScrollDC);
         GET_USER_FUNC(SetCapture);
         GET_USER_FUNC(SetFocus);
         GET_USER_FUNC(SetLayeredWindowAttributes);
         GET_USER_FUNC(SetParent);
         GET_USER_FUNC(SetWindowRgn);
         GET_USER_FUNC(SetWindowIcon);
         GET_USER_FUNC(SetWindowStyle);
         GET_USER_FUNC(SetWindowText);
         GET_USER_FUNC(ShowWindow);
         GET_USER_FUNC(SysCommand);
         GET_USER_FUNC(WindowMessage);
         GET_USER_FUNC(WindowPosChanging);
         GET_USER_FUNC(WindowPosChanged);
 #undef GET_USER_FUNC
     }
 
     prev = InterlockedCompareExchangePointer( (void **)&USER_Driver, driver, &lazy_load_driver );
     if (prev != &lazy_load_driver)
     {
         /* another thread beat us to it */
         HeapFree( GetProcessHeap(), 0, driver );
         FreeLibrary( graphics_driver );
         driver = prev;
     }
     return driver;
 }
 
 /* unload the graphics driver on process exit */
 void USER_unload_driver(void)
 {
     USER_DRIVER *prev;
     /* make sure we don't try to call the driver after it has been detached */
     prev = InterlockedExchangePointer( (void **)&USER_Driver, &null_driver );
     if (prev != &lazy_load_driver && prev != &null_driver)
         HeapFree( GetProcessHeap(), 0, prev );
 }
 
 
 /**********************************************************************
  * Null user driver
  *
  * These are fallbacks for entry points that are not implemented in the real driver.
  */
 
 static HKL CDECL nulldrv_ActivateKeyboardLayout( HKL layout, UINT flags )
 {
     return 0;
 }
 
 static void CDECL nulldrv_Beep(void)
 {
 }
 
 static SHORT CDECL nulldrv_GetAsyncKeyState( INT key )
 {
     return 0;
 }
 
 static INT CDECL nulldrv_GetKeyNameText( LONG lparam, LPWSTR buffer, INT size )
 {
     return 0;
 }
 
 static HKL CDECL nulldrv_GetKeyboardLayout( DWORD layout )
 {
     return 0;
 }
 
 static BOOL CDECL nulldrv_GetKeyboardLayoutName( LPWSTR name )
 {
     return FALSE;
 }
 
 static HKL CDECL nulldrv_LoadKeyboardLayout( LPCWSTR name, UINT flags )
 {
     return 0;
 }
 
 static UINT CDECL nulldrv_MapVirtualKeyEx( UINT code, UINT type, HKL layout )
 {
     return 0;
 }
 
 static UINT CDECL nulldrv_SendInput( UINT count, LPINPUT inputs, int size )
 {
     return 0;
 }
 
 static INT CDECL nulldrv_ToUnicodeEx( UINT virt, UINT scan, const BYTE *state, LPWSTR str,
                                       int size, UINT flags, HKL layout )
 {
     return 0;
 }
 
 static BOOL CDECL nulldrv_UnloadKeyboardLayout( HKL layout )
 {
     return 0;
 }
 
 static SHORT CDECL nulldrv_VkKeyScanEx( WCHAR ch, HKL layout )
 {
     return -1;
 }
 
 static void CDECL nulldrv_CreateCursorIcon( HCURSOR cursor )
 {
 }
 
 static void CDECL nulldrv_DestroyCursorIcon( HCURSOR cursor )
 {
 }
 
 static void CDECL nulldrv_SetCursor( HCURSOR cursor )
 {
 }
 
 static BOOL CDECL nulldrv_GetCursorPos( LPPOINT pt )
 {
     return FALSE;
 }
 
 static BOOL CDECL nulldrv_SetCursorPos( INT x, INT y )
 {
     return FALSE;
 }
 
 static BOOL CDECL nulldrv_ClipCursor( LPCRECT clip )
 {
     return FALSE;
 }
 
 static BOOL CDECL nulldrv_GetScreenSaveActive(void)
 {
     return FALSE;
 }
 
 static void CDECL nulldrv_SetScreenSaveActive( BOOL on )
 {
 }
 
 static INT CDECL nulldrv_AcquireClipboard( HWND hwnd )
 {
     return 0;
 }
 
 static BOOL CDECL nulldrv_CountClipboardFormats(void)
 {
     return 0;
 }
 
 static void CDECL nulldrv_EmptyClipboard( BOOL keepunowned )
 {
 }
 
 static void CDECL nulldrv_EndClipboardUpdate(void)
 {
 }
 
 static UINT CDECL nulldrv_EnumClipboardFormats( UINT format )
 {
     return 0;
 }
 
 static HANDLE CDECL nulldrv_GetClipboardData( UINT format )
 {
     return 0;
 }
 
 static INT CDECL nulldrv_GetClipboardFormatName( UINT format, LPWSTR buffer, UINT len )
 {
     return FALSE;
 }
 
 static BOOL CDECL nulldrv_IsClipboardFormatAvailable( UINT format )
 {
     return FALSE;
 }
 
 static UINT CDECL nulldrv_RegisterClipboardFormat( LPCWSTR name )
 {
     return 0;
 }
 
 static BOOL CDECL nulldrv_SetClipboardData( UINT format, HANDLE handle, BOOL owner )
 {
     return FALSE;
 }
 
 static LONG CDECL nulldrv_ChangeDisplaySettingsEx( LPCWSTR name, LPDEVMODEW mode, HWND hwnd,
                                              DWORD flags, LPVOID lparam )
 {
     return DISP_CHANGE_FAILED;
 }
 
 static BOOL CDECL nulldrv_EnumDisplayMonitors( HDC hdc, LPRECT rect, MONITORENUMPROC proc, LPARAM lp )
 {
     return FALSE;
 }
 
 static BOOL CDECL nulldrv_EnumDisplaySettingsEx( LPCWSTR name, DWORD num, LPDEVMODEW mode, DWORD flags )
 {
     return FALSE;
 }
 
 static BOOL CDECL nulldrv_GetMonitorInfo( HMONITOR handle, LPMONITORINFO info )
 {
     return FALSE;
 }
 
 static BOOL CDECL nulldrv_CreateDesktopWindow( HWND hwnd )
 {
     return TRUE;
 }
 
 static BOOL CDECL nulldrv_CreateWindow( HWND hwnd )
 {
     static int warned;
 
     /* HWND_MESSAGE windows don't need a graphics driver */
     if (GetAncestor( hwnd, GA_PARENT ) == get_user_thread_info()->msg_window) return TRUE;
     if (warned++) return FALSE;
 
     MESSAGE( "Application tried to create a window, but no driver could be loaded.\n");
     switch (driver_load_error)
     {
     case ERROR_MOD_NOT_FOUND:
         MESSAGE( "The X11 driver is missing.  Check your build!\n" );
         break;
     case ERROR_DLL_INIT_FAILED:
         MESSAGE( "Make sure that your X server is running and that $DISPLAY is set correctly.\n" );
         break;
     default:
         MESSAGE( "Unknown error (%d).\n", driver_load_error );
     }
 
     return FALSE;
 }
 
 static void CDECL nulldrv_DestroyWindow( HWND hwnd )
 {
 }
 
 static void CDECL nulldrv_GetDC( HDC hdc, HWND hwnd, HWND top_win, const RECT *win_rect,
                                  const RECT *top_rect, DWORD flags )
 {
 }
 
 static DWORD CDECL nulldrv_MsgWaitForMultipleObjectsEx( DWORD count, const HANDLE *handles, DWORD timeout,
                                                         DWORD mask, DWORD flags )
 {
     return WaitForMultipleObjectsEx( count, handles, flags & MWMO_WAITALL,
                                      timeout, flags & MWMO_ALERTABLE );
 }
 
 static void CDECL nulldrv_ReleaseDC( HWND hwnd, HDC hdc )
 {
 }
 
 static BOOL CDECL nulldrv_ScrollDC( HDC hdc, INT dx, INT dy, const RECT *scroll, const RECT *clip,
                                     HRGN hrgn, LPRECT update )
 {
     return FALSE;
 }
 
 static void CDECL nulldrv_SetCapture( HWND hwnd, UINT flags )
 {
 }
 
 static void CDECL nulldrv_SetFocus( HWND hwnd )
 {
 }
 
 static void CDECL nulldrv_SetLayeredWindowAttributes( HWND hwnd, COLORREF key, BYTE alpha, DWORD flags )
 {
 }
 
 static void CDECL nulldrv_SetParent( HWND hwnd, HWND parent, HWND old_parent )
 {
 }
 
 static int CDECL nulldrv_SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL redraw )
 {
     return 1;
 }
 
 static void CDECL nulldrv_SetWindowIcon( HWND hwnd, UINT type, HICON icon )
 {
 }
 
 static void CDECL nulldrv_SetWindowStyle( HWND hwnd, INT offset, STYLESTRUCT *style )
 {
 }
 
 static void CDECL nulldrv_SetWindowText( HWND hwnd, LPCWSTR text )
 {
 }
 
 static UINT CDECL nulldrv_ShowWindow( HWND hwnd, INT cmd, RECT *rect, UINT swp )
 {
     return swp;
 }
 
 static LRESULT CDECL nulldrv_SysCommand( HWND hwnd, WPARAM wparam, LPARAM lparam )
 {
     return -1;
 }
 
 static LRESULT CDECL nulldrv_WindowMessage( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
 {
     return 0;
 }
 
 static void CDECL nulldrv_WindowPosChanging( HWND hwnd, HWND insert_after, UINT swp_flags,
                                              const RECT *window_rect, const RECT *client_rect,
                                              RECT *visible_rect )
 {
 }
 
 static void CDECL nulldrv_WindowPosChanged( HWND hwnd, HWND insert_after, UINT swp_flags,
                                             const RECT *window_rect, const RECT *client_rect,
                                             const RECT *visible_rect, const RECT *valid_rects )
 {
 }
 
 static USER_DRIVER null_driver =
 {
     /* keyboard functions */
     nulldrv_ActivateKeyboardLayout,
     nulldrv_Beep,
     nulldrv_GetAsyncKeyState,
     nulldrv_GetKeyNameText,
     nulldrv_GetKeyboardLayout,
     nulldrv_GetKeyboardLayoutName,
     nulldrv_LoadKeyboardLayout,
     nulldrv_MapVirtualKeyEx,
     nulldrv_SendInput,
     nulldrv_ToUnicodeEx,
     nulldrv_UnloadKeyboardLayout,
     nulldrv_VkKeyScanEx,
     /* cursor/icon functions */
     nulldrv_CreateCursorIcon,
     nulldrv_DestroyCursorIcon,
     nulldrv_SetCursor,
     nulldrv_GetCursorPos,
     nulldrv_SetCursorPos,
     nulldrv_ClipCursor,
     /* screen saver functions */
     nulldrv_GetScreenSaveActive,
     nulldrv_SetScreenSaveActive,
     /* clipboard functions */
     nulldrv_AcquireClipboard,
     nulldrv_CountClipboardFormats,
     nulldrv_EmptyClipboard,
     nulldrv_EndClipboardUpdate,
     nulldrv_EnumClipboardFormats,
     nulldrv_GetClipboardData,
     nulldrv_GetClipboardFormatName,
     nulldrv_IsClipboardFormatAvailable,
     nulldrv_RegisterClipboardFormat,
     nulldrv_SetClipboardData,
     /* display modes */
     nulldrv_ChangeDisplaySettingsEx,
     nulldrv_EnumDisplayMonitors,
     nulldrv_EnumDisplaySettingsEx,
     nulldrv_GetMonitorInfo,
     /* windowing functions */
     nulldrv_CreateDesktopWindow,
     nulldrv_CreateWindow,
     nulldrv_DestroyWindow,
     nulldrv_GetDC,
     nulldrv_MsgWaitForMultipleObjectsEx,
     nulldrv_ReleaseDC,
     nulldrv_ScrollDC,
     nulldrv_SetCapture,
     nulldrv_SetFocus,
     nulldrv_SetLayeredWindowAttributes,
     nulldrv_SetParent,
     nulldrv_SetWindowRgn,
     nulldrv_SetWindowIcon,
     nulldrv_SetWindowStyle,
     nulldrv_SetWindowText,
     nulldrv_ShowWindow,
     nulldrv_SysCommand,
     nulldrv_WindowMessage,
     nulldrv_WindowPosChanging,
     nulldrv_WindowPosChanged
 };
 
 
 /**********************************************************************
  * Lazy loading user driver
  *
  * Initial driver used before another driver is loaded.
  * Each entry point simply loads the real driver and chains to it.
  */
 
 static HKL CDECL loaderdrv_ActivateKeyboardLayout( HKL layout, UINT flags )
 {
     return load_driver()->pActivateKeyboardLayout( layout, flags );
 }
 
 static void CDECL loaderdrv_Beep(void)
 {
     load_driver()->pBeep();
 }
 
 static SHORT CDECL loaderdrv_GetAsyncKeyState( INT key )
 {
     return load_driver()->pGetAsyncKeyState( key );
 }
 
 static INT CDECL loaderdrv_GetKeyNameText( LONG lparam, LPWSTR buffer, INT size )
 {
     return load_driver()->pGetKeyNameText( lparam, buffer, size );
 }
 
 static HKL CDECL loaderdrv_GetKeyboardLayout( DWORD layout )
 {
     return load_driver()->pGetKeyboardLayout( layout );
 }
 
 static BOOL CDECL loaderdrv_GetKeyboardLayoutName( LPWSTR name )
 {
     return load_driver()->pGetKeyboardLayoutName( name );
 }
 
 static HKL CDECL loaderdrv_LoadKeyboardLayout( LPCWSTR name, UINT flags )
 {
     return load_driver()->pLoadKeyboardLayout( name, flags );
 }
 
 static UINT CDECL loaderdrv_MapVirtualKeyEx( UINT code, UINT type, HKL layout )
 {
     return load_driver()->pMapVirtualKeyEx( code, type, layout );
 }
 
 static UINT CDECL loaderdrv_SendInput( UINT count, LPINPUT inputs, int size )
 {
     return load_driver()->pSendInput( count, inputs, size );
 }
 
 static INT CDECL loaderdrv_ToUnicodeEx( UINT virt, UINT scan, const BYTE *state, LPWSTR str,
                                   int size, UINT flags, HKL layout )
 {
     return load_driver()->pToUnicodeEx( virt, scan, state, str, size, flags, layout );
 }
 
 static BOOL CDECL loaderdrv_UnloadKeyboardLayout( HKL layout )
 {
     return load_driver()->pUnloadKeyboardLayout( layout );
 }
 
 static SHORT CDECL loaderdrv_VkKeyScanEx( WCHAR ch, HKL layout )
 {
     return load_driver()->pVkKeyScanEx( ch, layout );
 }
 
 static void CDECL loaderdrv_CreateCursorIcon( HCURSOR cursor )
 {
     load_driver()->pCreateCursorIcon( cursor );
 }
 
 static void CDECL loaderdrv_DestroyCursorIcon( HCURSOR cursor )
 {
     load_driver()->pDestroyCursorIcon( cursor );
 }
 
 static void CDECL loaderdrv_SetCursor( HCURSOR cursor )
 {
     load_driver()->pSetCursor( cursor );
 }
 
 static BOOL CDECL loaderdrv_GetCursorPos( LPPOINT pt )
 {
     return load_driver()->pGetCursorPos( pt );
 }
 
 static BOOL CDECL loaderdrv_SetCursorPos( INT x, INT y )
 {
     return load_driver()->pSetCursorPos( x, y );
 }
 
 static BOOL CDECL loaderdrv_ClipCursor( LPCRECT clip )
 {
     return load_driver()->pClipCursor( clip );
 }
 
 static BOOL CDECL loaderdrv_GetScreenSaveActive(void)
 {
     return load_driver()->pGetScreenSaveActive();
 }
 
 static void CDECL loaderdrv_SetScreenSaveActive( BOOL on )
 {
     load_driver()->pSetScreenSaveActive( on );
 }
 
 static INT CDECL loaderdrv_AcquireClipboard( HWND hwnd )
 {
     return load_driver()->pAcquireClipboard( hwnd );
 }
 
 static BOOL CDECL loaderdrv_CountClipboardFormats(void)
 {
     return load_driver()->pCountClipboardFormats();
 }
 
 static void CDECL loaderdrv_EmptyClipboard( BOOL keepunowned )
 {
     load_driver()->pEmptyClipboard( keepunowned );
 }
 
 static void CDECL loaderdrv_EndClipboardUpdate(void)
 {
     load_driver()->pEndClipboardUpdate();
 }
 
 static UINT CDECL loaderdrv_EnumClipboardFormats( UINT format )
 {
     return load_driver()->pEnumClipboardFormats( format );
 }
 
 static HANDLE CDECL loaderdrv_GetClipboardData( UINT format )
 {
     return load_driver()->pGetClipboardData( format );
 }
 
 static INT CDECL loaderdrv_GetClipboardFormatName( UINT format, LPWSTR buffer, UINT len )
 {
     return load_driver()->pGetClipboardFormatName( format, buffer, len );
 }
 
 static BOOL CDECL loaderdrv_IsClipboardFormatAvailable( UINT format )
 {
     return load_driver()->pIsClipboardFormatAvailable( format );
 }
 
 static UINT CDECL loaderdrv_RegisterClipboardFormat( LPCWSTR name )
 {
     return load_driver()->pRegisterClipboardFormat( name );
 }
 
 static BOOL CDECL loaderdrv_SetClipboardData( UINT format, HANDLE handle, BOOL owner )
 {
     return load_driver()->pSetClipboardData( format, handle, owner );
 }
 
 static LONG CDECL loaderdrv_ChangeDisplaySettingsEx( LPCWSTR name, LPDEVMODEW mode, HWND hwnd,
                                                      DWORD flags, LPVOID lparam )
 {
     return load_driver()->pChangeDisplaySettingsEx( name, mode, hwnd, flags, lparam );
 }
 
 static BOOL CDECL loaderdrv_EnumDisplayMonitors( HDC hdc, LPRECT rect, MONITORENUMPROC proc, LPARAM lp )
 {
     return load_driver()->pEnumDisplayMonitors( hdc, rect, proc, lp );
 }
 
 static BOOL CDECL loaderdrv_EnumDisplaySettingsEx( LPCWSTR name, DWORD num, LPDEVMODEW mode, DWORD flags )
 {
     return load_driver()->pEnumDisplaySettingsEx( name, num, mode, flags );
 }
 
 static BOOL CDECL loaderdrv_GetMonitorInfo( HMONITOR handle, LPMONITORINFO info )
 {
     return load_driver()->pGetMonitorInfo( handle, info );
 }
 
 static BOOL CDECL loaderdrv_CreateDesktopWindow( HWND hwnd )
 {
     return load_driver()->pCreateDesktopWindow( hwnd );
 }
 
 static BOOL CDECL loaderdrv_CreateWindow( HWND hwnd )
 {
     return load_driver()->pCreateWindow( hwnd );
 }
 
 static void CDECL loaderdrv_DestroyWindow( HWND hwnd )
 {
     load_driver()->pDestroyWindow( hwnd );
 }
 
 static void CDECL loaderdrv_GetDC( HDC hdc, HWND hwnd, HWND top_win, const RECT *win_rect,
                                    const RECT *top_rect, DWORD flags )
 {
     load_driver()->pGetDC( hdc, hwnd, top_win, win_rect, top_rect, flags );
 }
 
 static DWORD CDECL loaderdrv_MsgWaitForMultipleObjectsEx( DWORD count, const HANDLE *handles, DWORD timeout,
                                                           DWORD mask, DWORD flags )
 {
     return load_driver()->pMsgWaitForMultipleObjectsEx( count, handles, timeout, mask, flags );
 }
 
 static void CDECL loaderdrv_ReleaseDC( HWND hwnd, HDC hdc )
 {
     load_driver()->pReleaseDC( hwnd, hdc );
 }
 
 static BOOL CDECL loaderdrv_ScrollDC( HDC hdc, INT dx, INT dy, const RECT *scroll, const RECT *clip,
                                       HRGN hrgn, LPRECT update )
 {
     return load_driver()->pScrollDC( hdc, dx, dy, scroll, clip, hrgn, update );
 }
 
 static void CDECL loaderdrv_SetCapture( HWND hwnd, UINT flags )
 {
     load_driver()->pSetCapture( hwnd, flags );
 }
 
 static void CDECL loaderdrv_SetFocus( HWND hwnd )
 {
     load_driver()->pSetFocus( hwnd );
 }
 
 static void CDECL loaderdrv_SetLayeredWindowAttributes( HWND hwnd, COLORREF key, BYTE alpha, DWORD flags )
 {
     load_driver()->pSetLayeredWindowAttributes( hwnd, key, alpha, flags );
 }
 
 static void CDECL loaderdrv_SetParent( HWND hwnd, HWND parent, HWND old_parent )
 {
     load_driver()->pSetParent( hwnd, parent, old_parent );
 }
 
 static int CDECL loaderdrv_SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL redraw )
 {
     return load_driver()->pSetWindowRgn( hwnd, hrgn, redraw );
 }
 
 static void CDECL loaderdrv_SetWindowIcon( HWND hwnd, UINT type, HICON icon )
 {
     load_driver()->pSetWindowIcon( hwnd, type, icon );
 }
 
 static void CDECL loaderdrv_SetWindowStyle( HWND hwnd, INT offset, STYLESTRUCT *style )
 {
     load_driver()->pSetWindowStyle( hwnd, offset, style );
 }
 
 static void CDECL loaderdrv_SetWindowText( HWND hwnd, LPCWSTR text )
 {
     load_driver()->pSetWindowText( hwnd, text );
 }
 
 static UINT CDECL loaderdrv_ShowWindow( HWND hwnd, INT cmd, RECT *rect, UINT swp )
 {
     return load_driver()->pShowWindow( hwnd, cmd, rect, swp );
 }
 
 static LRESULT CDECL loaderdrv_SysCommand( HWND hwnd, WPARAM wparam, LPARAM lparam )
 {
     return load_driver()->pSysCommand( hwnd, wparam, lparam );
 }
 
 static LRESULT CDECL loaderdrv_WindowMessage( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
 {
     return load_driver()->pWindowMessage( hwnd, msg, wparam, lparam );
 }
 
 static void CDECL loaderdrv_WindowPosChanging( HWND hwnd, HWND insert_after, UINT swp_flags,
                                                const RECT *window_rect, const RECT *client_rect,
                                                RECT *visible_rect )
 {
     load_driver()->pWindowPosChanging( hwnd, insert_after, swp_flags,
                                        window_rect, client_rect, visible_rect );
 }
 
 static void CDECL loaderdrv_WindowPosChanged( HWND hwnd, HWND insert_after, UINT swp_flags,
                                               const RECT *window_rect, const RECT *client_rect,
                                               const RECT *visible_rect, const RECT *valid_rects )
 {
     load_driver()->pWindowPosChanged( hwnd, insert_after, swp_flags, window_rect,
                                       client_rect, visible_rect, valid_rects );
 }
 
 static USER_DRIVER lazy_load_driver =
 {
     /* keyboard functions */
     loaderdrv_ActivateKeyboardLayout,
     loaderdrv_Beep,
     loaderdrv_GetAsyncKeyState,
     loaderdrv_GetKeyNameText,
     loaderdrv_GetKeyboardLayout,
     loaderdrv_GetKeyboardLayoutName,
     loaderdrv_LoadKeyboardLayout,
     loaderdrv_MapVirtualKeyEx,
     loaderdrv_SendInput,
     loaderdrv_ToUnicodeEx,
     loaderdrv_UnloadKeyboardLayout,
     loaderdrv_VkKeyScanEx,
     /* cursor/icon functions */
     loaderdrv_CreateCursorIcon,
     loaderdrv_DestroyCursorIcon,
     loaderdrv_SetCursor,
     loaderdrv_GetCursorPos,
     loaderdrv_SetCursorPos,
     loaderdrv_ClipCursor,
     /* screen saver functions */
     loaderdrv_GetScreenSaveActive,
     loaderdrv_SetScreenSaveActive,
     /* clipboard functions */
     loaderdrv_AcquireClipboard,
     loaderdrv_CountClipboardFormats,
     loaderdrv_EmptyClipboard,
     loaderdrv_EndClipboardUpdate,
     loaderdrv_EnumClipboardFormats,
     loaderdrv_GetClipboardData,
     loaderdrv_GetClipboardFormatName,
     loaderdrv_IsClipboardFormatAvailable,
     loaderdrv_RegisterClipboardFormat,
     loaderdrv_SetClipboardData,
     /* display modes */
     loaderdrv_ChangeDisplaySettingsEx,
     loaderdrv_EnumDisplayMonitors,
     loaderdrv_EnumDisplaySettingsEx,
     loaderdrv_GetMonitorInfo,
     /* windowing functions */
     loaderdrv_CreateDesktopWindow,
     loaderdrv_CreateWindow,
     loaderdrv_DestroyWindow,
     loaderdrv_GetDC,
     loaderdrv_MsgWaitForMultipleObjectsEx,
     loaderdrv_ReleaseDC,
     loaderdrv_ScrollDC,
     loaderdrv_SetCapture,
     loaderdrv_SetFocus,
     loaderdrv_SetLayeredWindowAttributes,
     loaderdrv_SetParent,
     loaderdrv_SetWindowRgn,
     loaderdrv_SetWindowIcon,
     loaderdrv_SetWindowStyle,
     loaderdrv_SetWindowText,
     loaderdrv_ShowWindow,
     loaderdrv_SysCommand,
     loaderdrv_WindowMessage,
     loaderdrv_WindowPosChanging,
     loaderdrv_WindowPosChanged
 };