Function is a built - in procedure that performs the action of displaying a dialog box 函数就是一个内置过程,此过程执行显示对话框的操作。
While visual basic has many built - in procedures for performing common actions , there will always be cases when you want your program to perform an action that a built - in procedure can t handle 虽然visual basic有很多内置过程可用来执行常见操作,但总会存在一些情况,您希望程序执行内置过程无法处理的操作。