How To Create a Transparent Pen?

[pritamkd]

Hi, I am developing a marker application. Basically allows free-hand drawing with the mouse. When i draw a line, i want the window below also to visible. I am not able to create a transparent Pen for this? i tried BS_HOLLOW, but it doesn't draw at all. hdc = CreateDC(TEXT("DISPLAY"),NULL,NULL,NULL); lb.lbColor = rgbCurrent; lb.lbHatch = NULL; lb.lbStyle = BS_SOLID; //hNewPen = CreatePen(PS_SOLID,10,rgbCurrent); //SetROP2(hdc,R2_MERGEPEN); hNewPen = ExtCreatePen(PS_GEOMETRIC,10,&lb,0,NULL); //SelectObject(hdc,CreateBrushIndirect(&lb)); //SetDCBrushColor(hdc,rgbCurrent); SelectObject(hdc,hNewPen); MoveToEx(hdc, PrevX, PrevY, NULL); LineTo(hdc, CurrX, CurrY); DeleteDC(hdc); ........ Can anyone help? Hercules