VB声明 | |
Declare Function UnlockFileEx Lib "kernel32" Alias "UnlockFileEx" (ByVal hFile As Long, ByVal dwReserved As Long, ByVal nNumberOfBytesToUnlockLow As Long, ByVal nNumberOfBytesToUnlockHigh As Long, lpOverlapped As OVERLAPPED) As Long | |
说明 | |
解除对一个文件的锁定 | |
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 |
hFile | Long,要解锁的文件的句柄 |
dwReserved | Long,未用;设为零 |
nNumberOfBytesToUnlockLow | Long,锁定区域中字符数量的低32位值 |
nNumberOfBytesToUnlockHigh | Long,锁定区域中字符数量的高32位值 |
lpOverlapped | OVERLAPPED,包含了文件中相对于解锁区域起始处的偏移量 |
注解 | |
解锁的文件区域必须与以前锁定时设置的区域完全相符。文件关闭前,应用程序应确定已解除了对任何区域的锁定。参考LockFileEx了解进一步的情况 |