To Make control of fixed size.

Add OnSetExtent Event.

BOOL CResizeControlCtrl::OnSetExtent(LPSIZEL lpSizeL)

{

SIZEL sizeL;

CDC cdc;

cdc.CreateCompatibleDC( NULL );

CSize size( 200, 200 );

cdc.DPtoHIMETRIC( &size );

sizeL.cx = size.cx;

sizeL.cy = size.cy;

return COleControl::OnSetExtent( &sizeL );

}