Vcl.ComCtrls.TTVCollapsingEvent

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Delphi

TTVCollapsingEvent = procedure(Sender: TObject; Node: TTreeNode; var AllowCollapse: Boolean) of object;

C++

typedef void __fastcall (__closure *TTVCollapsingEvent)(System::TObject* Sender, TTreeNode* Node, bool &AllowCollapse);

Properties

Type	Visibility	Source	Unit	Parent
type typedef	public	Vcl.ComCtrls.pas Vcl.ComCtrls.hpp	Vcl.ComCtrls	Vcl.ComCtrls

Description

Used in the TCustomTreeView.OnCollapsing event.

This event is used in the TCustomTreeView.OnCollapsing event when a node is about to be collapsed.

The Sender parameter is the tree view whose selected node collapses, and the Node parameter specifies the node that is about to be collapsed. AllowCollapse indicates whether the node can collapse or not.

See Also

• FullCollapse

• Collapse

• OnCollapsing

• Procedural types

• Creating events