SetFileTime的坑，时间设不下去，谁踩到过?请问怎么回事？

[hc_z]

貌似有些时间(合法的时间)设置不下去。保持原有文件时间。
boolean modifyWriteTime(string path1, string path2) {
FILETIME ftCreate1, ftAccess1, ftWrite1;
FILETIME ftCreate2, ftAccess2, ftWrite2;
FILETIME ftCreate3, ftAccess3, ftWrite3;
HANDLE fh1 = CreateFile((CString)path1.c_str(), GENERIC_READ,
FILE_SHARE_READ, NULL, OPEN_EXISTING, NULL, 0);

if (!GetFileTime(fh1, &ftCreate1, &ftAccess1, &ftWrite1)) {
CloseHandle(fh1);
return FALSE;
}

HANDLE fh2 = CreateFile((CString)path2.c_str(), GENERIC_ALL,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); // FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_WRITE_THROUGH
if (!GetFileTime(fh2, &ftCreate2, &ftAccess2, &ftWrite2)) {
CloseHandle(fh1);
return FALSE;
}
//设置时间 参数(文件句柄,创建时间,修改时间)
DWORD r1 = GetLastError();
//ftWrite1.dwHighDateTime = 30786615;
//ftWrite1.dwLowDateTime = 3460456960;
BOOL retModTime = SetFileTime(fh2, &ftCreate1, &ftAccess1, &ftWrite1);
DWORD r2 = GetLastError();
if (!retModTime) {
CloseHandle(fh1);
CloseHandle(fh2);
return FALSE;
}
CloseHandle(fh1);
CloseHandle(fh2);

HANDLE fh3 = CreateFile((CString)path2.c_str(), GENERIC_READ,
FILE_SHARE_READ, NULL, OPEN_EXISTING, NULL, 0); // FILE_FLAG_BACKUP_SEMANTICS
if (fh3 == NULL) {
return false;
}
ftWrite3.dwHighDateTime = 111;
ftWrite3.dwLowDateTime = 222;
if (!GetFileTime(fh3, &ftCreate3, &ftAccess3, &ftWrite3)) {
CloseHandle(fh3);
return FALSE;
}
CloseHandle(fh3);
return true;
}
ftWrite3取得的时间和ftWrite2一致，无法和ftWrite1一致。但是，修改ftWrite2的值(注释掉的两行)，是可以设下去的。
没有报错和失败。
怀疑是不是不能把过去的时间设置下去？

[zgl7903]

MSDN 上的说明 Changing a File Time to the Current Time The following example sets the last-write time for a file to the current system time using the SetFileTime function. Note that the file must be opened with the CreateFile function using FILE_WRITE_ATTRIBUTES access.

#include <windows.h>

// SetFileToCurrentTime - sets last write time to current system time
// Return value - TRUE if successful, FALSE otherwise
// hFile  - must be a valid file handle

BOOL SetFileToCurrentTime(HANDLE hFile)
{
    FILETIME ft;
    SYSTEMTIME st;
    BOOL f;

    GetSystemTime(&st);              // gets current time
    SystemTimeToFileTime(&st, &ft);  // converts to file time format
    f = SetFileTime(hFile,           // sets last-write time for file
        (LPFILETIME) NULL, (LPFILETIME) NULL, &ft);

    return f;
}

[hc_z]

也没有用啊。
HANDLE fh2 = CreateFile((CString)path2.c_str(), GENERIC_WRITE,
0, NULL, OPEN_EXISTING, FILE_WRITE_ATTRIBUTES, fh1);

[hc_z]

会不会这个API在Win10上的问题？

[hc_z]

有个新发现，操作硬盘上的文件没问题，操作SD卡的文件才出现无效的问题。
是权限问题？