JVCL Help:TJvClipboard.DestroyHandle
JVCL Help: TJvClipboard.DestroyHandle Method
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Ensures the delayed rendering formats are rendered before destroying the clipboard object
Pascal
procedureDestroyHandle;
Description
To ensure that the formats using delayed rendering are saved when the application terminates, it is necessary that we get their values before actually destroying the underlying window (which handle is given by the Handle property) As a result, the OnRenderFormat event will be fired for every format with delayed rendering still in the clipboard. This could lead to memory problems if the format is quite big. You should then asks the user if he wants to keep the big objects available for other programs If you don't call this method and some formats are in the clipboard with delayed rendering, it will be called upon destruction of the clipboard, which is likely to happen after the destruction of the object where the event is set. I let you imagine the consequences... So you should call this function from the destructor (or the OnDestroy event) of the component where the OnRenderFormat event handler is set (eg, the main form) as this component is likely to be destroyed before the clipboard itself.
See Also
TJvClipboard.Handle, TJvClipboard.OnRenderFormat
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