SourceDestData

If a script add-inimplements the OnSourceDestChange event, the method receives a SourceDestData object to indicate which tab's state changed.

Property Name	Return Type	Description
dest	bool	Returns True if the tab is now the destination.
source	bool	Returns True if the tab is now the source. If both source and dest return False it indicates that the tab is now "off".
qualifiers	string	Returns a string indicating any qualifier keys that were held down by the user when the event was triggered. The string can contain any or all of the following: shift ctrl, alt, lwin, rwin If no qualifiers were down, the string will be: none
tab	object:Tab	Returns a Tab object representing the tab.