My app sets a control to full screen, and draws to the full screen. At a certain point I want to be able to return the display to just the main pane. I can do that with CCoeControl::SetExtent(). That works to display the control in just the main pane. However, whatever was previously drawn shows above (status pane) and below (control pane). I can't see the program name and icon in the status pane, or the Options menu in the control pane - they're obscurred by whatever was last drawn when the control was full screen.
How do I clear, or refresh, the display to get the status pane and control pane showing again?