public override void PaintColumnHeaderItem(NTreeListPaintContext context, NTreeListColumnHeader item)
{
PaintCustomBackground(context, item);
item.PaintContent(context);
PaintSortGlyph(context, item);
}
void PaintCustomBackground(NTreeListPaintContext context, NTreeListColumnHeader item)
{
NRectangle bounds = context.PaintBounds;
bounds.Inflate(0, -1);
Rectangle gdiRect = bounds.ToRectangle();
Color c1 = Color.Empty;
Color c2 = Color.Empty;
switch (item.VisualState)
{
case ItemVisualState.Normal:
c1 = Color.FloralWhite;
c2 = Color.Chocolate;
break;
case ItemVisualState.Hot:
c1 = Color.Orange;
c2 = Color.Red;
break;
case ItemVisualState.Pressed:
c1 = Color.Red;
c2 = Color.Orange;
break;
}
LinearGradientBrush br = new LinearGradientBrush(gdiRect, c1, c2, 90F);
context.Graphics.FillRectangle(br, gdiRect);
br.Dispose();
if (item.Owner.VisibleIndex == 0)
{
return;
}
Pen p = new Pen(Color.Black);
context.Graphics.DrawLine(p, bounds.X - 1, bounds.Y + 3, bounds.X - 1, bounds.Bottom - 4);
p.Color = Color.Wheat;
context.Graphics.DrawLine(p, bounds.X, bounds.Y + 4, bounds.X, bounds.Bottom - 3);
p.Dispose();
}
