这几个API在VB中如何使用?

Declare Function FindClose Lib "kernel32" Alias "FindClose" (ByVal hFindFile As Long) As Long

Declare Function FindFirstFile Lib "kernel32" Alias "FindFirstFileA" (ByVal lpFileName As String, lpFindFileData As WIN32_FIND_DATA) As Long

Declare Function FindNextFile Lib "kernel32" Alias "FindNextFileA" (ByVal hFindFile As Long, lpFindFileData As WIN32_FIND_DATA) As Long

我想用这几个API实查找查硬盘上所有文件
但不知道在VB中如何使用~