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TVTHeader.HandleMessage Method
General message handler for the header.
Pascal
function HandleMessage(var Message: TMessage): Boolean; virtual;
Description
The header gets here the opportunity to handle certain messages before they reach the tree. This is important because the tree needs to handle various non-client area messages for the header as well as some dragging/tracking events. By returning True the message will not be handled further, otherwise the message is then dispatched to the proper message handlers.
Class
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