~~Title: SourceDestData ~~
<pageheader/>

If a [[:scripting:script_add-ins|script add-in ]]implements the **[[..:scripting_events:onsourcedestchange|OnSourceDestChange]]** event, the method receives a **SourceDestData** object to indicate which tab's state changed.


<commandtable columns="3" id="cmdtable_1">
$$ Property Name
$$ 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|Tab]]** 
$$ Returns a **[[tab|Tab]]** object representing the tab.
</commandtable>