Running the Application
The application would run in full screen mode, press ALT+TAB to navigate to the place where your QR Code is displayed. (e.g. WebPage)
Capturing the QR Code
Drag the mouse curser from the top left of the QR Code to the right bottom. The snapshot area is designed for capturing square size area only. That gives you flexibility to capture.
Exiting the Application
To Exit the application press ESC to exit.