Intercept LabWindows/CVI CLOSE event

[Believer]

In my LabWindows UI the user can click the X on the top right to quit the application.

I'd like to intercept that message to do various things before it gets to the TestStand Engine.

I tried to use InstallWinMsgCallback for a WM_QUIT and WM_CLOSE but it doesn't get called.     

Thanks,

Ronnie

[Believer · Accepted solution]

OK - I figured it out - it's the EVENT_CLOSE generated by the MainPanelCallback.