画图源码，可以写文字，画圆弧，画直线，画椭圆，画贝塞尔曲线。如运行截图所示，图上的蓝色线条就是用GDI画出来的。-Paint source, you can write text, draw an arc, painting line, ellipse, Bezier drawing. As shown in the screenshot run, the blue line on the map is drawn with GDI.