Cegui windows disappear temporarily.

[Montred]

There's a weird bug related (I think) to the DirectX context in the Ogre renderer.

When I'm using CEGUI with Ogre3D in Direct3D9 mode in Windows 7 with ATI drivers, if I alt tab from my game to other DirectX game and then go back to my game, all the CEGUI windows disappear temporarily. Now, as I hover over the buttons, the buttons start to turn visible. Making a window invisible and then visible again fixes the problem. I don't attach the log because there are no messages when this happens.

So currently I have this workaround, every time the application gets focus I "reset" the gui by making every window that is supposed to be visible invisible and then visible again:

Code: Select all

      CEGUI::WindowManager::WindowIterator it = m_windowManager->getIterator();
      it.toStart();
      while (!it.isAtEnd()){
        if ((*it)->isVisible()){
         (*it)->hide();
         (*it)->show();
        }
        it++;
      }


This is a hack though, so I thought I'd ask in case somebody knows what could be causing the problem.

[mmixLinus]

Hi,

Tried this? (These messages are received for if you're using DirectX)

Code: Select all

void OgreApplication::eventOccurred(const Ogre::String& eventName, const Ogre::NameValuePairList * /*parameters*/)
{
   if (eventName == "DeviceLost")
   {
      setDeviceLost(true);  // just some MMiX.Me handling
   }
   else if (eventName == "DeviceRestored")
   {
      setDeviceLost(false);  // just some MMiX.Me handling
      CEGUI::System::getSingleton().signalRedraw();         // <-----
   }
}


/mmixLinus

[Montred]

The signal redraw doesn't work. Thanks for the tip though, maybe I can combine the two solutions for something more stable than what I have.