How to create an Elliptic window

30 12 2008

We could use CWnd’s SetWindowRgn function to clip a portion of the window.

int SetWindowRgn( HRGN hRgn, BOOL bRedraw = FALSE )

Please check the code snippet below,

void CreateEllipticWindow()
{
   CRgn rgn;
  
   // create an elliptic region
   rgn.CreateEllipticRgn(x1,y1,x2,y2);
  
   //(x1,y1) - top left co-ordinate
   //(x2,y2) - bottom right co-ordinate
     
   //Sets the window region of a window
    SetWindowRgn((HRGN)rgn.m_hObject,true);
}
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