Make full screen setting and resetting correct

git-svn-id: http://www.openflipper.org/svnrepo/OpenFlipper/branches/Free@2796 383ad7c9-94d9-4d36-a494-682f7c89f535

OpenFlipper/Core/optionHandling.cc

@@ -63,9 +63,9 @@ void Core::applyOptions(){
       coreWidget_->slotChangeView(OpenFlipper::Options::defaultToolboxMode(), QStringList());
     //Set Fullscreen
     if ( OpenFlipper::Options::fullScreen() )
-      coreWidget_->setWindowState(Qt::WindowFullScreen);
+      coreWidget_->setWindowState( coreWidget_->windowState() | Qt::WindowFullScreen);
     else
-      coreWidget_->setWindowState(!Qt::WindowFullScreen);
+		coreWidget_->setWindowState( (coreWidget_->windowState() | Qt::WindowFullScreen) ^ Qt::WindowFullScreen);
   
     //Hide Logger
     if (OpenFlipper::Options::hideLogger()) {