private void Start_btn_Click(object sender, EventArgs e)
        {
            string[] list =
            {
                @"M:\TEST_VIDEOS\!1080p 60fpsOri and the Will of the Wisps.mp4",        @"M:\TEST_VIDEOS\!audi_a7_borussia_vfl.mp4",
                @"M:\TEST_VIDEOS\!LG Jazz 1080-30p.mp4",
                @"M:\TEST_VIDEOS\!NoAudio1080p 60fpsOri and the Will of the Wisps.mp4",
                @"M:\TEST_VIDEOS\!PATAGONIA 1080p.mp4",
                @"M:\TEST_VIDEOS\Adele.mp4",
                @"M:\TEST_VIDEOS\Avengers_2_1080p_6Ch_48kHz-HDTN.mp4"
            };
            int period = 1000;

            (m_objMFile as IMPreview).PreviewWindowSet("", panelPr.Handle.ToInt32());
            (m_objMFile as IMPreview).PreviewEnable("", 1, 1);


            Thread.Sleep(period);
            int index = -1;

            for (int i = 0; i < list.Length; i++)
            {
                m_objMFile.PreviewFullScreen("", 0, 0);
                //m_objMFile.PlaylistAdd(null, list[i], "", ref index, out MItem item);
                //m_objMFile.PlaylistPosSet(0, 0, 0);
                //m_objMPlaylist.PlaylistGetCount(out int nFiles, out double dblDuration);
                //m_objMPlaylist.PlaylistGetByIndex(nFiles, out double dblPos, out string strPathOrCommand, out MItem pItem);
                m_objMFile.FileNameSet(list[i], "");
                m_objMFile.FilePlayStart();
                Thread.Sleep(period * 2);
                m_objMFile.PreviewFullScreen("", 1, 0);
                Thread.Sleep(period);
            }
            m_objMFile.PreviewFullScreen("", 0, 0);
        }