VC++ 画笔，铜笔工具，用过PS的大根都知道这功能，另外Windows画图板也有这功能，就是在空白文档上写字，类似手机的手写功能-Brushes, copper VC++ pen tool, used the root of the PS know this function, in addition to the Windows drawing board this is to write on a blank document, similar to the phone' s ha