掌握对话框和CDialog类 掌握对话框的创建、显示和数据校验机制 掌握模式对话框与无模式对话框的使用方法 掌握公共对话框的使用-CDialog class to grasp and master the dialog box dialog box to create, display and data verification mechanisms to master mode and free mode dialog box dialog box to use to master