- Fixed alt+tab issue under fullscreen OpenGL.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4324 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CIrrDeviceWin32.cpp

@@ -857,9 +857,16 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 		if (dev)
 		{
 			if ((wParam&0xFF)==WA_INACTIVE)
+			{
+				ShowWindow(hWnd,SW_MINIMIZE);
 				dev->switchToFullScreen(true);
+			}
 			else
+			{
+				SetForegroundWindow(hWnd);
+				ShowWindow(hWnd, SW_RESTORE);
 				dev->switchToFullScreen();
+			}
 		}
 		break;
 
@@ -1328,19 +1335,23 @@ bool CIrrDeviceWin32::switchToFullScreen(bool reset)
 {
 	if (!CreationParams.Fullscreen)
 		return true;
+
+	DEVMODE dm;
+	memset(&dm, 0, sizeof(dm));
+	dm.dmSize = sizeof(dm);
+	// use default values from current setting
+	EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm);
+
 	if (reset)
 	{
 		if (ChangedToFullScreen)
-			return (ChangeDisplaySettings(NULL,0)==DISP_CHANGE_SUCCESSFUL);
+		{
+			return (ChangeDisplaySettings(&dm,0)==DISP_CHANGE_SUCCESSFUL);
+		}
 		else
 			return true;
 	}
 
-	DEVMODE dm;
-	memset(&dm, 0, sizeof(dm));
-	dm.dmSize = sizeof(dm);
-	// use default values from current setting
-	EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm);
 	dm.dmPelsWidth = CreationParams.WindowSize.Width;
 	dm.dmPelsHeight = CreationParams.WindowSize.Height;
 	dm.dmBitsPerPel = CreationParams.Bits;