windows系统编程：各种时间函数

好多的函数，好多的参数， windows系统编程...

 

#include <windows.h>
#include <tchar.h>
#include <strsafe.h>

BOOL GetLastWriteTime(HANDLE hFile,
         LPTSTR lpszString,
         DWORD dwSize) {
  FILETIME ftCreate, ftAccess, ftWrite;
  SYSTEMTIME stUTC, stLocal;
  DWORD dwRet;

  if(!GetFileTime(hFile, &ftCreate,
         &ftAccess, &ftWrite))
    return FALSE;

  FileTimeToSystemTime(&ftWrite, &stUTC);
  SystemTimeToTzSpecificLocalTime(NULL,
                 &stUTC, &stLocal);
  dwRet = StringCchPrintf(lpszString, dwSize,
             TEXT("%02d/%02d/%d %02d:%02d"),
             stLocal.wMonth, stLocal.wDay,
             stLocal.wYear, stLocal.wHour,
             stLocal.wMinute);

  if(S_OK == dwRet)
    return TRUE;
  else return FALSE;
}

int _tmain(int argc, TCHAR **argv) {
  HANDLE hFile;
  TCHAR szBuf[MAX_PATH];

  if(argc != 2)
    {
      printf("This sample takes a file name as a parameter.\n");
      return 0;
    }
  hFile = CreateFile(argv[1], GENERIC_READ, FILE_SHARE_READ,
         NULL, OPEN_EXISTING, 0, NULL);
  if(hFile == INVALID_HANDLE_VALUE) {
    printf("CreateFile failed with %d\n", GetLastError());
    return 0;
  }
  if(GetLastWriteTime(hFile, szBuf, MAX_PATH))
    _tprintf(TEXT("Last write time is: %s\n"), szBuf);
  CloseHandle(hFile);
}