RAD Studio VCL Reference
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TCustomForm.VisibleChanging Method
TCustomForm Class | TCustomForm Members | Forms Namespace | Description | See Also
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Responds just before the form changes the value of its Visible property.

Pascal
procedure VisibleChanging; override;
C++
virtual __fastcall VisibleChanging();
Description

This protected method raises an exception if, for some reason, the form should not change its visible state. 

 

See Also
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