VC++制作的可以用键盘和鼠标进行画圆和画直线和长方形等

VC++制作的可以用键盘和鼠标进行画圆和画直线和长方形等-VC++ Produced can be used for keyboard and mouse drawcircle and painting a straight line and rectangle, etc.

vc ++中实现鼠标左键单击画直线，双击直线为选中状态，且直线变成虚线 -vc++ the left mouse button click the picture to achieve a straight line, double-click the line for the selected state, and the straight line into a dotted line