private void btnApplyOSDPic_Click(object sender, EventArgs e)
        {
            m_nOsdNum2 = (uint)comboxOSDLayer2.SelectedIndex;

            m_xoffset2 = Convert.ToInt32(txtBox_Xoffset2.Text);

            m_yoffset2 = Convert.ToInt32(txtBox_Yoffset2.Text);

            m_width2 = Convert.ToInt32(txtBox_width2.Text);

            m_height2 = Convert.ToInt32(txtBox_height2.Text);

            m_nTransparent2 = Convert.ToUInt32(txtBox_Transparent2.Text);

            if (m_hCapDev[0] != 0)
            {
                string str_picture_path = m_strPicturePath;

                EXPORTS.QCAP_SET_OSD_PICTURE(m_hCapDev[0], m_nOsdNum2, m_xoffset2, m_yoffset2, m_width2, m_height2, ref str_picture_path, m_nTransparent2);
            }

            if (m_hCapDev[1] != 0)
            {
                string str_picture_path = m_strPicturePath;

                EXPORTS.QCAP_SET_OSD_PICTURE(m_hCapDev[1], m_nOsdNum2, m_xoffset2, m_yoffset2, m_width2, m_height2, ref str_picture_path, m_nTransparent2);
            }

            if (m_hCapDev[2] != 0)
            {
                string str_picture_path = m_strPicturePath;

                EXPORTS.QCAP_SET_OSD_PICTURE(m_hCapDev[2], m_nOsdNum2, m_xoffset2, m_yoffset2, m_width2, m_height2, ref str_picture_path, m_nTransparent2);
            }

            if (m_hCapDev[3] != 0)
            {
                string str_picture_path = m_strPicturePath;

                EXPORTS.QCAP_SET_OSD_PICTURE(m_hCapDev[3], m_nOsdNum2, m_xoffset2, m_yoffset2, m_width2, m_height2, ref str_picture_path, m_nTransparent2);
            }
        }