基于C++ Builder的一个小程序，可以通过菜单栏的设置选项来设置画笔的颜色和粗细程度，并且在客户区进行操作，并可以保存文件，是一个学习CBC很适用的例子。-Based on a small C++ Builder program by setting options in the menu bar to set the color and thickness of the brush, and operate in the client area, and you can save the