Introduction - If you have any usage issues, please Google them yourself
1, the choice point, line, rectangle, ellipse for drawing 2, optional marker, LineTyple for drawing 3, choose paint colors 4, real-time displays the current coordinates of the mouse pointer 5, to clear the drawing board 6, can be Save-drawn map (bmp, jpg, gif) 7, operating more humane, to imitate the windows drawing board 8, the program involved a wide range of GUI is a good learning materials.