用VB代码生成验证码的例子，这里的验证码是英文验证码，也就是比较简单的那种，使用也比较广泛，调试时候要注意，生成代码引用了一个ocx类库，所以在编译时要指定自定义控件路径，打开工程文件，选择“工程”/“部件”命令，在这里选择部件路径。-Examples of code generated by a verification code VB, here is the English verification code verification code, which is relatively simple kind of use is also more extensive debugging time to pay attention, to generate code that references a library ocx, so at compile time specify a custom path, open the project file, select "Project"/"part" command, where path selection means.