private void CustomDrawItem(ListBoxDrawItemEventArgs e)
{
double h = _customDrawingPosition / Convert.ToDouble(CustomDrawingPositionMaximum);
if (e.IsItemSelected)
{
h = Math.Abs(1.0 - h);
}
HSL backColor = new HSL(h,
1,
e.ItemIndex % 2 == 0 ? 0.5 : 0.6);
using (SolidBrush sb = new SolidBrush(backColor.ToRgb()))
{
e.Graphics.FillRectangle(sb, e.DrawingBounds);
}
HSL foreColor = new HSL(Math.Abs(1.0 - h),
1,
0.5);
using (SolidBrush sb = new SolidBrush(foreColor.ToRgb()))
e.Graphics.DrawString(DemoListBox.GetItemText(e.ItemIndex), DemoListBox.Font, sb, e.DrawingBounds);
}
private void CustomDrawingTimer_Tick(object sender, EventArgs e)
{
if (++_customDrawingPosition > CustomDrawingPositionMaximum)
{
_customDrawingPosition = 0;
}
DemoListBox.Refresh();
DemoCheckedListBox.Refresh();
}
private void ClearSelectionButton_Click(object sender, EventArgs e)
{
DemoListBox.ClearSelection();
DemoCheckedListBox.ClearSelection();
}
private void SelectAllButton_Click(object sender, EventArgs e)
{
DemoListBox.SelectAllItems();
DemoCheckedListBox.SelectAllItems();
}
