RAD Studio VCL Reference
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TControlCanvas.FreeHandle Method
TControlCanvas Class | TControlCanvas Members | Controls Namespace | Description | See Also
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Releases the handle to a device context (HDC) used by the control canvas object.

Pascal
procedure FreeHandle;
C++
__fastcall FreeHandle();
Description

Call FreeHandle to free the HDC used by the control canvas. FreeHandle sets the Handle property to NULL. After calling FreeHandle, an HDC will be reacquired if any of the drawing methods are called.

Note: Setting the Handle property to NULL does not free the HDC. Set the Handle property to NULL rather than call FreeHandle if the HDC is release by the application.
 

See Also
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