private void splitterHorizontal_Paint(object sender, PaintEventArgs e)
{
Ul.DrawHorizontal(sender as Splitter, e);
}
private void splitter1_Paint(object sender, PaintEventArgs e)
{
Ul.DrawHorizontal(sender as Splitter, e);
// Ul.DrawTwoSolidVertical(sender as Splitter, e, CF.ExternalBorder); // SystemColors.AppWorkspace
}