I am working on an outlook vsto plugin, suppose there are multiple inspectors of outlook opened(e.g. mails,appointments). I want an EVENT to know when user switches to different inspector using ALT+Tab, or Which inspector got focus. what i want to achieve is am Enabling/Disabling a ribbon button by checking the kind of Item opened in inspector like if Appointment item (button enabled) else (disabled). I have achieved half of the task by setting button enabled in Appointment_open() event. the problem start arising when user moved to another inspector of outlook using ALT+Tab then the ribbon button is left enabled. if i get the event of which inspector got focus i can set the enabled property to true or false.
