Vcl.XPActnCtrls.TXPStylePopupMenu.VisibleChanging
Delphi
procedure VisibleChanging; override;
C++
DYNAMIC void __fastcall VisibleChanging();
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
procedure function |
protected | Vcl.XPActnCtrls.pas Vcl.XPActnCtrls.hpp |
Vcl.XPActnCtrls | TXPStylePopupMenu |
Description
Provides the interface for a method that responds to changes in the control's visibility.
Vcl.XPActnCtrls.TXPStylePopupMenu.VisibleChanging inherits from Vcl.Controls.TControl.VisibleChanging. All content below this line refers to Vcl.Controls.TControl.VisibleChanging.
Provides the interface for a method that responds to changes in the control's visibility.
VisibleChanging is called before the value of a control's Visible property changes. As implemented in TControl, it does nothing. Override VisibleChanging to respond to changes in the control's visibility. For example, if a control should not change its visibility, override VisibleChanging to raise an exception when an attempt is made to alter the control's visibility.