Vcl.ComCtrls.TCustomTreeView.OnCheckStateChanging

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Delphi

property OnCheckStateChanging: TTVCheckStateChangingEvent read FOnCheckStateChanging write FOnCheckStateChanging;

C++

__property TTVCheckStateChangingEvent OnCheckStateChanging = {read=FOnCheckStateChanging, write=FOnCheckStateChanging};

Properties

Type	Visibility	Source	Unit	Parent
event	protected	Vcl.ComCtrls.pas Vcl.ComCtrls.hpp	Vcl.ComCtrls	TCustomTreeView

Description

OnCheckStateChanging event handler is tiggered before a node's CheckState changes.

See Also

• Vcl.ComCtrls.TTreeNode.CheckState