title: Taking screenshot from Petrel child windows
body: <p>Is it possible to take screenshot of Petrel's child windows (programmatically) from the plugin using Ocean 2014.1? At the moment, I can save BMP for Window3D and EMF for other derives of ToggleWindow and read them again from my plugin, but, this doesn't work for all Petrel's child windows. Also, I would prefer to get raster image (like what I get when I push on Camera button action in Clipboard action group, Home tab) and support other windows like Histogram Window, Plot Window, etc.</p>