一个用富文本框(RichText)制作的带有QQ字符表情和超链接以及字体颜色等功能聊天室示例。程序封装为一个控件，可以直接在程序中调用即可。 -with a rich text box (RichText) produced with the QQ character expressions and hyperlinks, and font colors and such functional chat rooms example. Packaging for a procedural co