Vcl.ComCtrls.TCustomTreeView.OnCollapsing
Delphi
property OnCollapsing: TTVCollapsingEvent read FOnCollapsing write FOnCollapsing;
C++
__property TTVCollapsingEvent OnCollapsing = {read=FOnCollapsing, write=FOnCollapsing};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | protected | Vcl.ComCtrls.pas Vcl.ComCtrls.hpp |
Vcl.ComCtrls | TCustomTreeView |
Description
Occurs when a node is about to be collapsed.
The TTVCollapsingEvent type points to a method that is called when a node is about to be collapsed.
OnCollapsing is an event handler of type Vcl.ComCtrls.TTVCollapsingEvent.