用MFC将窗体分割，画直角坐标系。通过控制台实现直线的Bline、DDA算法和圆的中点算法-MFC will be split with the form, draw a Cartesian coordinate system. Achieved through the console line Bline, DDA algorithm and the midpoint circle algorithm

mfc环境下应用PNG透明窗体全攻略（控件不透明）-mfc application environment PNG transparent form Raiders (control opaque)