学步园

BOOL CAudioboxDlg::DisplayFileInfo(LPTSTR szFile)
{
    HANDLE hFile;
    LONGLONG llSize=0;
    DWORD dwSizeLow=0, dwSizeHigh=0;
    TCHAR szScrap[64];

    // Open the specified file to read size and date information
    hFile = CreateFile(szFile,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,
                       (DWORD) 0, NULL);

    if (hFile == INVALID_HANDLE_VALUE)
    {
        RetailOutput(TEXT("*** Failed(0x%x) to open file (to read size)!/r/n"),
                     GetLastError());
        return FALSE;
    }

	
    dwSizeLow = GetFileSize(hFile, &dwSizeHigh);
    if ((dwSizeLow == 0xFFFFFFFF) && (GetLastError() != NO_ERROR))
    {
        RetailOutput(TEXT("*** Error(0x%x) reading file size!/r/n"),
                     GetLastError());
        CloseHandle(hFile);
        return FALSE;
    }

    // Large files will also use the upper DWORD to report size.
    // Add them together for the true size if necessary.
    if (dwSizeHigh)
        llSize = (dwSizeHigh << 16) + dwSizeLow;
    else
        llSize = dwSizeLow;

    // Read date information
    BY_HANDLE_FILE_INFORMATION fi;
    if (GetFileInformationByHandle(hFile, &fi))
    {
        CTime time(fi.ftLastWriteTime);

        wsprintf(szScrap, TEXT("File date: %02d/%02d/%d/0"), 
                 time.GetMonth(), time.GetDay(), time.GetYear());
        m_StrFileDate.SetWindowText(szScrap);
    }

    CloseHandle(hFile);

    // Update size/date windows
    wsprintf(szScrap, TEXT("Size: %d bytes/0"), dwSizeLow);
    m_StrFileSize.SetWindowText(szScrap);

    return TRUE;
}