屏蔽VB的TEXT控件，右击系统菜单。避免该控件的复制、粘贴功能。

vb示例源码,读取和显示PDF文档的专用控件. 很有参考价值的PDF读取工具.-vb sample source code, read and display PDF documents of the special control. a good reference tool for PDF to read.

pdf文件编辑工具控件，功能十分强大，经典之作-pdf document editing tool control, function is very powerful, classic