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TCustomTreeView.OnChanging Event
TCustomTreeView Class | TCustomTreeView Members | ComCtrls Namespace | Description | See Also
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Occurs when the selection is about to change from one node to another.

Pascal
property OnChanging: TTVChangingEvent;
C++
__property TTVChangingEvent OnChanging;
Description

Write an OnChanging event handler to selectively prevent selection from moving to specific nodes. 

The TTVChangingEvent type points to a method that is called when the selection is about to be changed from one node to another. Set AllowChange to false, to prevent selection from moving to a new node. The Node parameter specifies the node that is about to be selected. 

 

See Also
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