JVCL Help:TJvWindowHook
JVCL Help: TJvWindowHook Class
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TJvWindowHook
run\JvWndProcHook.pas
Summary
Enables you to receive messages send to a certain control.
Pascal
run\JvWndProcHook.pas
TJvWindowHook = class(TJvComponent);
Description
- JVCLInfo
Use TJvWindowHook to receive and respond to messages send to a certain control.
SetControl to specify the control to hook and set Active to true to place a hook on that control. Write BeforeMessage and/or AfterMessage event handlers to respond to messages before or after they are handled by the hooked control. Note that if you do not write a BeforeMessage and AfterMessage handler that the control won't be hooked.
TJvWindowHook places and removes a hook on a control by a call to RegisterWndProcHook and UnRegisterWndProcHook, resp. An internal list is maintained to prevent "broken links" when a hook is removed.
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