CAD drawing mcdbsolid target parameter (com interface)

Implemented in C # code description:

private void DrawSolid()
{
    //绘McDbSolid对象
    axMxDrawX1.AddLinetype("MLineType1", "");
    axMxDrawX1.LineType = "MLineType1";
    axMxDrawX1.DrawCADColor = 255;
    axMxDrawX1.DrawSolid(0, 50, 30, 50, 30, 40, 0, 40);
    axMxDrawX1.AddLinetype("MLineType2", "");
    axMxDrawX1.LineType = "MLineType2";
    axMxDrawX1.DrawCADColor = 65280;
    axMxDrawX1.DrawSolid(50, 60, 30, 60, 30, 80, 50, 80);
    axMxDrawX1.AddLinetype("MLineType3", "");
    axMxDrawX1.LineType = "MLineType3";
    axMxDrawX1.DrawCADColor = 65535;
    axMxDrawX1.DrawSolid(90, 20, 35, 20, 35, 40, 90, 40);
    axMxDrawX1.AddLinetype("MLineType4", "");
    axMxDrawX1.LineType = "MLineType4";
    axMxDrawX1.DrawCADColor = 16,711,680; 
    axMxDrawX1.DrawSolid (150, 90, 100, 90, 100, 40, 150, 40); 
}