ActivateTabData

If a script add-inimplements the **OnActivateTab**event, the method receives an ActivateTabData object whenever the activation state of a tab changes.

Property Name	Return Type	Description
closing	bool	Returns True if the activation change is due to the old tab being closed.
newtab	object:Tab	Returns a Tab object representing the tab that has become active.
oldtab	object:Tab	Returns a Tab object representing the tab that has gone inactive.
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