在用vc做程序时候，经常需要把输出的文本和图形保存到位图文件，当然可以有现成的控件来实现,但总不能如自己所愿，还是自己动手写吧！ -Vc procedures used to do often need to output text and graphics document preservation plan in place, of course, can have ready-made controls to achieve, but can not, such as their wi