RAD Studio VCL Reference
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ExtCtrls.TSectionEvent Type

TSectionEvent is the type of event handlers that respond when a section of a THeader control is resized.

Pascal
TSectionEvent = procedure (Sender: TObject; ASection, AWidth: Integer) of object;
C++
(Sender: TObject; ASection, AWidth: Integer) ( TSectionEvent)();

ExtCtrls

Sender is the header control. 

ASection is the index of the section that was resized. 

AWidth is the width of the section. 

 

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