为什么VB 编程中如何使窗口右上角的关闭按钮(X)失效?

VB6.0让窗体右上角的X关闭按钮失效(禁止窗体右上角的上关闭按钮) 新建一个工程，什么也不用做，直接把这写代码复制粘贴到工程代码里就行，运行看！ Option Explicit Private Declare Function DeleteMenu Lib "user32" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long) As Long Priva