Is there a way I can capture the click of the 'X' close button from within the RadWindow, so I can set a specific argument value to be passed back to the parent window? From what I've seen, the suggested solutions have been to check for a null argument on the parent side which would indicate the X close was used. I want to pass an argument back (such as 'updated' or 'notUpdated') so I know whether to refresh a main grid control based on the actions performed within the window. Thanks.