explorer: Don't call driver create_desktop if desktop name is "root".

dlls/winex11.drv/desktop.c

@@ -359,21 +359,10 @@ void X11DRV_init_desktop( Window win, unsigned int width, unsigned int height )
  */
 NTSTATUS x11drv_create_desktop( void *arg )
 {
-    static const WCHAR rootW[] = {'r','o','o','t',0};
     const struct create_desktop_params *params = arg;
     XSetWindowAttributes win_attr;
     Window win;
     Display *display = thread_init_display();
-    WCHAR name[MAX_PATH];
-
-    if (!NtUserGetObjectInformation( NtUserGetThreadDesktop( GetCurrentThreadId() ),
-                                     UOI_NAME, name, sizeof(name), NULL ))
-        name[0] = 0;
-
-    TRACE( "%s %ux%u\n", debugstr_w(name), params->width, params->height );
-
-    /* magic: desktop "root" means use the root window */
-    if (!wcsicmp( name, rootW )) return FALSE;
 
     /* Create window */
     win_attr.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask | EnterWindowMask |

programs/explorer/desktop.c

@@ -42,7 +42,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(explorer);
 
 static const WCHAR default_driver[] = {'m','a','c',',','x','1','1',0};
 
-static BOOL using_root;
+static BOOL using_root = TRUE;
 
 struct launcher
 {
@@ -1089,6 +1089,8 @@ void manage_desktop( WCHAR *arg )
 
     if (name && width && height)
     {
+        /* magic: desktop "root" means use the root window */
+        using_root = !wcsicmp( name, L"root" );
         if (!(desktop = CreateDesktopW( name, NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL )))
         {
             WINE_ERR( "failed to create desktop %s error %ld\n", wine_dbgstr_w(name), GetLastError() );
@@ -1109,7 +1111,7 @@ void manage_desktop( WCHAR *arg )
 
         desktop_orig_wndproc = (WNDPROC)SetWindowLongPtrW( hwnd, GWLP_WNDPROC,
             (LONG_PTR)desktop_wnd_proc );
-        using_root = !desktop || !create_desktop( graphics_driver, name, width, height );
+        if (!using_root) using_root = !create_desktop( graphics_driver, name, width, height );
         SendMessageW( hwnd, WM_SETICON, ICON_BIG, (LPARAM)LoadIconW( 0, MAKEINTRESOURCEW(OIC_WINLOGO)));
         if (name) set_desktop_window_title( hwnd, name );
         SetWindowPos( hwnd, 0, GetSystemMetrics(SM_XVIRTUALSCREEN), GetSystemMetrics(SM_YVIRTUALSCREEN),