private void btnLineDown_MouseDown(object sender, MouseEventArgs e)
{
ScrollAction = (int) Eclectic.ScrollBarActions.SB_LINEDOWN;
tmrScroll.Enabled = true;
Eclectic.SendMessage(txtPage.Handle, Eclectic.WM_VSCROLL, (int) Eclectic.ScrollBarActions.SB_LINEDOWN, 0);
txtPage.Focus();
}