//
// OnPaint event handler
//
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
// Draw the dragging region
AhslColor lightColor = BackColor.ToAhsl();
AhslColor darkColor = BackColor.ToAhsl();
lightColor = new AhslColor(lightColor.A, lightColor.H, lightColor.S, lightColor.L + 6);
darkColor = new AhslColor(darkColor.A, darkColor.H, darkColor.S, darkColor.L - 19);
Pen lightPen = new Pen(lightColor.ToColor());
Pen darkPen = new Pen(darkColor.ToColor());
// Draw the light stripes
for (int x = 3; x <= 15; x += 3)
{
e.Graphics.DrawLine(lightPen, x, 2, 2, x);
e.Graphics.DrawLine(lightPen, 16, x + 1, x + 1, 16);
}
// Draw the dark stripes
for (int x = 4; x <= 16; x += 3)
{
e.Graphics.DrawLine(darkPen, x, 2, 2, x);
if (x <= 14)
{
e.Graphics.DrawLine(darkPen, 16, x + 1, x + 1, 16);
}
}
lightPen.Dispose();
darkPen.Dispose();
}