__WIN__ Added dummy import dialog.
__WIN__ Avoid a crash when closing the application.
__WIN__ Close the application when the user uses the Quit menu item.
__WIN__ Pass the OpenGL view mouse events to the controller.
__WIN__ Use horizontal lines instead of group boxes on the settings dialog.
Tidy up.
__WIN__ Don't show a window when running a child process.
__WIN__ Wait for the child process to finish.
__WIN__ Removed unused code.