How to find the names of all files from the clipboard

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I just created an MFC application to find the file names from the clipboard.This code is working fine when we copy 1 file, but when we copy multiple files it only shows the first file. Is there is any method to find out all the file names that copied to the clipboard?

What I have tried:

AddClipboardFormatListener(AfxGetApp()->m_pMainWnd->m_hWnd);

LRESULT Cfile_trackerDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
    switch(message)
    {
    case WM_CLIPBOARDUPDATE:
        {
            AfxBeginThread(FileArrival, NULL);
            break;
        }
    case WM_CHANGECBCHAIN:
        {
            AfxBeginThread(FileArrival, NULL);
            break;
        }
    }
    return CDialog::WindowProc(message, wParam, lParam);
}

UINT FileArrival(LPVOID param)
{
    TCHAR lpszFileName[MAX_PATH];
    char *szTime;
    time_t thistime;
        OpenClipboard(0);
        HGLOBAL hGlobal = (HGLOBAL)GetClipboardData(CF_HDROP);
        if (hGlobal)
        {
            HDROP hDrop = (HDROP)GlobalLock(hGlobal);
            if (hDrop)
            {
                time(&thistime);
                szTime = ctime(&thistime);
                DragQueryFile(hDrop, 0, lpszFileName, MAX_PATH);
                WriteLog((char*)lpszFileName,1);
                GlobalUnlock(hGlobal);
            }
        CloseClipboard();
    }
    return 0;
}

Posted 25-Apr-17 0:23am

MarshalS

Updated 25-Apr-17 0:42am

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Jochen Arndt · Accepted Answer · 2017-04-25T00:42:00

See the documentation: DragQueryFile function (Windows)[^].

Call DragQueryFile first with iFile set to 0xFFFFFFFF. That call will return the number of file names. Then use a loop to get each file name:

UINT fileCount = DragQueryFile(hDrop, 0xffffffff, NULL, 0);
for (UINT i = 0; i < fileCount; i++)
{
    DragQueryFile(hDrop, i, lpszFileName, MAX_PATH);
    /* Do something with lpszFileName here */
}