这段程序为更具图片的轮廓创建RGN对象，从而设定窗口的不规则形状-This program creates the outline for the more pictures RGN object to set the window to the irregular shape

狄罗尼三角网代码实现，可以通过点击vb程序窗口自动生成不规则三角网-to create a delaunary triangle by vb