CompuServe Thread

Hi, I am using the following code to test the CRgn::CombineRgn function and find that I am unable to successfully combine the regions. Am I doing something wrong or have I just run out of memory allocation ? How are regions of this size selected ? The mapping mode used in this application is MM_LOENGLISH void CSimconDoc::OnTestrgn() { CRgn rgn1, rgn2, rgn3; CPoint *pPoint = (CPoint*)new BYTE[4*sizeof(CPoint)]; pPoint[0] = CPoint(0, 0); pPoint[1] = CPoint(1000, -590); pPoint[2] = CPoint(1000, -610); pPoint[3] = CPoint(0, -10); CPoint *pPoints = (CPoint*)new BYTE[4*sizeof(CPoint)]; pPoints[0] = CPoint(100, -590); pPoints[1] = CPoint(1000, -590); pPoints[2] = CPoint(1000, -610); pPoints[3] = CPoint(100, -610); if(!rgn1.CreatePolygonRgn(pPoint, 4, WINDING)) TRACE("Unable to create polygon region\n"); else TRACE("Polygon region 1 created\n"); if(!rgn2.CreatePolygonRgn(pPoints, 4, WINDING)) TRACE("Unable to create polygon region\n"); else TRACE("Polygon region 2 created\n"); if(!rgn3.CreatePolygonRgn(pPoints, 4, WINDING)) TRACE("Unable to create polygon region\n"); else TRACE("Polygon region 3 created\n"); ???? if(rgn3.CombineRgn(&rgn1, &rgn2, RGN_OR) == ERROR) ???? TRACE("Unable to combine rgn1 and rgn2\n"); else TRACE("Rgn1 and rgn2 combined successfully\n"); delete pPoint; delete pPoints; }