Called by the framework when the control's extent needs to be changed, as a result of a call to IOleObject::SetExtent.
virtual BOOL OnSetExtent(
A pointer to the SIZEL structure that uses long integers to represent the width and height of the control, expressed in HIMETRIC units.
Nonzero if the size change was accepted; otherwise 0.
The default implementation handles the resizing of the control's extent. If the control is in-place active, a call to the container's OnPosRectChanged is then made.
Override this function to alter the default resizing of your control.