InstallShield包含300多个内部库函数，用户可在安装脚本中调用它们来创建程序组，操作文件夹，处理目录，监督安装状态，创建对话框，操作文件及其它更多工作(InstallShield contains more than 300 internal library functions. Users can invoke them in installation scr ipts to create program groups, manipulate folders, process di