使用GDI实现平面坐标的绘制，并且能计算鼠标点选的行列，左键在对应的矩形框画实心圆或取消，右键在对应的矩形画空心圆或取消-Use GDI drawing plane coordinate implementation, and can calculate the ranks of the mouse click, left in the corresponding rectangle painted solid round or cancel, right in the corresponding rectangle painted hollow circle or cancel