CodeXL User Guide1) Once
a frame capture session is running, press the Capture button 
either
underneath the central preview image or in the toolbar to capture a frame. Once
a frame capture has been initiated, it may take a few seconds to complete. The
capture is complete when the capture button returns to an enabled state and a
small preview image of the captured frame appears in the margin on the right
hand side of the window.
2) Continue to capture as many frames as desired, waiting for a previous capture to finish before initiating a new one. The right hand margin will provide a running count of the captured frames, as well as a small preview image and basic data for each.
3) When
stopping the capture session, press the Stop button 
either
underneath the central preview image or in the toolbar.
