Sweden-Number/dlls/user32/driver.c

760 lines
21 KiB
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 "wingdi.h"
#include "winuser.h"
#include "wine/debug.h"
#include "wine/gdi_driver.h"
#include "wine/unicode.h"
#include "user_private.h"
#include "controls.h"
WINE_DEFAULT_DEBUG_CHANNEL(user);
static USER_DRIVER null_driver, lazy_load_driver;
const USER_DRIVER *USER_Driver = &lazy_load_driver;
static char driver_load_error[80];
static HMODULE load_desktop_driver( HWND hwnd )
{
static const WCHAR display_device_guid_propW[] = {
'_','_','w','i','n','e','_','d','i','s','p','l','a','y','_',
'd','e','v','i','c','e','_','g','u','i','d',0 };
static const WCHAR key_pathW[] = {
'S','y','s','t','e','m','\\',
'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
'C','o','n','t','r','o','l','\\',
'V','i','d','e','o','\\','{',0};
static const WCHAR displayW[] = {'}','\\','0','0','0','0',0};
static const WCHAR driverW[] = {'G','r','a','p','h','i','c','s','D','r','i','v','e','r',0};
HMODULE ret = 0;
HKEY hkey;
DWORD size;
WCHAR path[MAX_PATH];
WCHAR key[(sizeof(key_pathW) + sizeof(displayW)) / sizeof(WCHAR) + 40];
UINT guid_atom = HandleToULong( GetPropW( hwnd, display_device_guid_propW ));
strcpy( driver_load_error, "The explorer process failed to start." ); /* default error */
memcpy( key, key_pathW, sizeof(key_pathW) );
if (!GlobalGetAtomNameW( guid_atom, key + strlenW(key), 40 )) return 0;
strcatW( key, displayW );
if (RegOpenKeyW( HKEY_LOCAL_MACHINE, key, &hkey )) return 0;
size = sizeof(path);
if (!RegQueryValueExW( hkey, driverW, NULL, NULL, (BYTE *)path, &size ))
{
if (!(ret = LoadLibraryW( path ))) ERR( "failed to load %s\n", debugstr_w(path) );
TRACE( "%s %p\n", debugstr_w(path), ret );
}
else
{
size = sizeof(driver_load_error);
RegQueryValueExA( hkey, "DriverError", NULL, NULL, (BYTE *)driver_load_error, &size );
}
RegCloseKey( hkey );
return ret;
}
/* load the graphics driver */
static const USER_DRIVER *load_driver(void)
{
void *ptr;
HMODULE graphics_driver;
USER_DRIVER *driver, *prev;
driver = HeapAlloc( GetProcessHeap(), 0, sizeof(*driver) );
*driver = null_driver;
graphics_driver = load_desktop_driver( GetDesktopWindow() );
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(RegisterHotKey);
GET_USER_FUNC(ToUnicodeEx);
GET_USER_FUNC(UnloadKeyboardLayout);
GET_USER_FUNC(UnregisterHotKey);
GET_USER_FUNC(VkKeyScanEx);
GET_USER_FUNC(DestroyCursorIcon);
GET_USER_FUNC(SetCursor);
GET_USER_FUNC(GetCursorPos);
GET_USER_FUNC(SetCursorPos);
GET_USER_FUNC(ClipCursor);
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(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(UpdateLayeredWindow);
GET_USER_FUNC(WindowMessage);
GET_USER_FUNC(WindowPosChanging);
GET_USER_FUNC(WindowPosChanged);
GET_USER_FUNC(SystemParametersInfo);
#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 );
driver = prev;
}
else LdrAddRefDll( 0, graphics_driver );
__wine_set_display_driver( graphics_driver );
register_builtin_classes();
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 -1;
}
static INT CDECL nulldrv_GetKeyNameText( LONG lparam, LPWSTR buffer, INT size )
{
return 0;
}
static HKL CDECL nulldrv_GetKeyboardLayout( DWORD thread_id )
{
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 BOOL CDECL nulldrv_RegisterHotKey( HWND hwnd, UINT modifiers, UINT vk )
{
return TRUE;
}
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 void CDECL nulldrv_UnregisterHotKey( HWND hwnd, UINT modifiers, UINT vk )
{
}
static SHORT CDECL nulldrv_VkKeyScanEx( WCHAR ch, HKL layout )
{
return -1;
}
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 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 BOOL CDECL nulldrv_IsClipboardFormatAvailable( UINT format )
{
return FALSE;
}
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 parent = GetAncestor( hwnd, GA_PARENT );
/* HWND_MESSAGE windows don't need a graphics driver */
if (!parent || 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");
if (driver_load_error[0]) MESSAGE( "%s\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, HRGN update )
{
RECT rect;
GetClipBox( hdc, &rect );
return BitBlt( hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
hdc, rect.left - dx, rect.top - dy, SRCCOPY );
}
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 BOOL CDECL nulldrv_UpdateLayeredWindow( HWND hwnd, const UPDATELAYEREDWINDOWINFO *info,
const RECT *window_rect )
{
return TRUE;
}
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, struct window_surface **surface )
{
}
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,
struct window_surface *surface )
{
}
static BOOL CDECL nulldrv_SystemParametersInfo( UINT action, UINT int_param, void *ptr_param, UINT flags )
{
return FALSE;
}
static USER_DRIVER null_driver =
{
/* keyboard functions */
nulldrv_ActivateKeyboardLayout,
nulldrv_Beep,
nulldrv_GetAsyncKeyState,
nulldrv_GetKeyNameText,
nulldrv_GetKeyboardLayout,
nulldrv_GetKeyboardLayoutName,
nulldrv_LoadKeyboardLayout,
nulldrv_MapVirtualKeyEx,
nulldrv_RegisterHotKey,
nulldrv_ToUnicodeEx,
nulldrv_UnloadKeyboardLayout,
nulldrv_UnregisterHotKey,
nulldrv_VkKeyScanEx,
/* cursor/icon functions */
nulldrv_DestroyCursorIcon,
nulldrv_SetCursor,
nulldrv_GetCursorPos,
nulldrv_SetCursorPos,
nulldrv_ClipCursor,
/* clipboard functions */
nulldrv_AcquireClipboard,
nulldrv_CountClipboardFormats,
nulldrv_EmptyClipboard,
nulldrv_EndClipboardUpdate,
nulldrv_EnumClipboardFormats,
nulldrv_GetClipboardData,
nulldrv_IsClipboardFormatAvailable,
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_UpdateLayeredWindow,
nulldrv_WindowMessage,
nulldrv_WindowPosChanging,
nulldrv_WindowPosChanged,
/* system parameters */
nulldrv_SystemParametersInfo
};
/**********************************************************************
* 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 thread_id )
{
return load_driver()->pGetKeyboardLayout( thread_id );
}
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 BOOL CDECL loaderdrv_RegisterHotKey( HWND hwnd, UINT modifiers, UINT vk )
{
return load_driver()->pRegisterHotKey( hwnd, modifiers, vk );
}
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 void CDECL loaderdrv_UnregisterHotKey( HWND hwnd, UINT modifiers, UINT vk )
{
load_driver()->pUnregisterHotKey( hwnd, modifiers, vk );
}
static SHORT CDECL loaderdrv_VkKeyScanEx( WCHAR ch, HKL layout )
{
return load_driver()->pVkKeyScanEx( ch, layout );
}
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 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 BOOL CDECL loaderdrv_IsClipboardFormatAvailable( UINT format )
{
return load_driver()->pIsClipboardFormatAvailable( format );
}
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_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 void CDECL loaderdrv_SetLayeredWindowAttributes( HWND hwnd, COLORREF key, BYTE alpha, DWORD flags )
{
load_driver()->pSetLayeredWindowAttributes( hwnd, key, alpha, flags );
}
static int CDECL loaderdrv_SetWindowRgn( HWND hwnd, HRGN hrgn, BOOL redraw )
{
return load_driver()->pSetWindowRgn( hwnd, hrgn, redraw );
}
static BOOL CDECL loaderdrv_UpdateLayeredWindow( HWND hwnd, const UPDATELAYEREDWINDOWINFO *info,
const RECT *window_rect )
{
return load_driver()->pUpdateLayeredWindow( hwnd, info, window_rect );
}
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_RegisterHotKey,
loaderdrv_ToUnicodeEx,
loaderdrv_UnloadKeyboardLayout,
loaderdrv_UnregisterHotKey,
loaderdrv_VkKeyScanEx,
/* cursor/icon functions */
nulldrv_DestroyCursorIcon,
loaderdrv_SetCursor,
loaderdrv_GetCursorPos,
loaderdrv_SetCursorPos,
loaderdrv_ClipCursor,
/* clipboard functions */
loaderdrv_AcquireClipboard,
loaderdrv_CountClipboardFormats,
loaderdrv_EmptyClipboard,
loaderdrv_EndClipboardUpdate,
loaderdrv_EnumClipboardFormats,
loaderdrv_GetClipboardData,
loaderdrv_IsClipboardFormatAvailable,
loaderdrv_SetClipboardData,
/* display modes */
loaderdrv_ChangeDisplaySettingsEx,
loaderdrv_EnumDisplayMonitors,
loaderdrv_EnumDisplaySettingsEx,
loaderdrv_GetMonitorInfo,
/* windowing functions */
loaderdrv_CreateDesktopWindow,
loaderdrv_CreateWindow,
nulldrv_DestroyWindow,
loaderdrv_GetDC,
nulldrv_MsgWaitForMultipleObjectsEx,
nulldrv_ReleaseDC,
nulldrv_ScrollDC,
nulldrv_SetCapture,
nulldrv_SetFocus,
loaderdrv_SetLayeredWindowAttributes,
nulldrv_SetParent,
loaderdrv_SetWindowRgn,
nulldrv_SetWindowIcon,
nulldrv_SetWindowStyle,
nulldrv_SetWindowText,
nulldrv_ShowWindow,
nulldrv_SysCommand,
loaderdrv_UpdateLayeredWindow,
nulldrv_WindowMessage,
nulldrv_WindowPosChanging,
nulldrv_WindowPosChanged,
/* system parameters */
nulldrv_SystemParametersInfo
};