5、CompareFileTime
function ulong CompareFileTime( REF s_filetime lpFileTime1, REF s_filetime lpFileTime2) library "kernel32.dll" Alias for "CompareFileTime"
VB声明
Declare Function CompareFileTime Lib "kernel32" Alias "CompareFileTime" (lpFileTime1 As FILETIME, lpFileTime2 As FILETIME) As Long
说明
根据FILETIME结构的信息，对比两个文件的时间
返回值
Long，如两个时间相等，就返回零；如lpFileTime1小于lpFileTime2，返回-1；如lpFileTime2小于lpFileTime1，返回1
参数表
参数
类型及说明
lpFileTime1
lpFileTime2
6、CopyFileA
function ulong CopyFileA(string lpExistingFileName, string lpNewFileName, long bFailIfExists) library "kernel32.dll" Alias for "CopyFileA"
VB声明
Declare Function CopyFile Lib "kernel32" Alias "CopyFileA" (ByVal lpExistingFileName As String, ByVal lpNewFileName As String, ByVal bFailIfExists As Long) As Long
说明
复制文件。与vb的filecopy命令相似
返回值
Long，非零表示成功，零表示失败。会设置GetLastError
参数表
参数
类型及说明
lpExistingFileName
String，源文件名
lpNewFileName
String，目标文件名
bFailIfExists
Long，如果设为TRUE（非零），那么一旦目标文件已经存在，则函数调用会失败。否则目标文件被改写
