求助 我在用Setfiletime这个函数时总显示“编译错误： 用户定义类型未定义”为什么呢？

[gavin_yan83]

我在模块中声明
Public Declare Function GetFileTime Lib "kernel32" (ByVal hFile As Long, lpCreationTime As FILETIME, lpLastAccessTime As FILETIME, lpLastWriteTime As FILETIME) As Long

Public Declare Function SetFileTime Lib "kernel32" (ByVal hFile As Long, lpCreationTime As FILETIME, lpLastAccessTime As FILETIME, lpLastWriteTime As FILETIME) As Long
是不是没有引用哪个控件啊？
哪位高手知道，请指点，先谢谢了！

[jadeluo]

应该是缺少了这个:

Private Type FILETIME
    dwLowDateTime As Long
    dwHighDateTime As Long
End Type

[gavin_yan83]

非常感谢高手的帮助，问题解决了！谢谢！

[gavin_yan83]

但是还有个问题，在编程的时候怎么用呢？
我是个新手，希望得到各位的帮助！
我是想修改文件的“最后修改时间”属性
谢谢了！