Reference > Script triggers reference > OnWindowOpen
 
OnWindowOpen
Performs a script each time you open a window of a database file.
When the script runs
After a window is opened or after OnFirstWindowOpen (if it is selected in the Script Triggers tab) is activated.
Modes in which the trigger can be used
OnWindowOpen activates before FileMaker Pro enters a mode.
Result
None.
Compatibility 
 
Where the script trigger is activated 
Supported 
FileMaker Pro 
Yes 
FileMaker Server 
Yes 
FileMaker Go 
Yes 
Custom Web Publishing 
Yes 
FileMaker WebDirect 
Yes 
Runtime solution 
Yes 
Originated in
FileMaker Pro 12.0
Notes
You can also trigger a script this way when you open a window for a hidden file previously opened via a script or relationship.
Related topics 
Setting up script triggers
Setting script triggers for layouts
Setting script triggers for objects