formhelp OnHide event
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Applies to
acFormHelp component.  

  TacFormHelpOnHideEvent = procedure(Sender: TObject; HelpControl: TControl) of object;  
property OnHide: TacFormHelpOnHideEvent;  

The OnHide event occurs before hiding of the popup window with context-sensitive help. Write the OnHide event handler to make some special processing before the help window disappears from screen.  
Use HelpControl parameter to get pointer to control from wich with the context-sensitive help was taken.  

See also
OnShow event.