Rviz plugin - Fullscreen mode for an Ogre::RenderWindow

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Hi all, I am trying to figure out how to set the fullscreen mode of a Ogre::RenderWindow for my own rviz plugin.

I am using the code of the default plugin Camera Display of rviz. It uses the Ogre::RenderWindow to visualize the output of the camera. Actually I can change most of the properties of the window but I couldn't set the fullscreen mode for that window. I need the fullscreen mode just for the camera window of the camera and not for the whole rviz window.

I tried without success the instruction

render_panel_->getRenderWindow()->setFullscreen(true, 1366, 768);

inside the event

void MyCameraDisplay::onInitialize()

Any suggestions?

Thanks