void cb_SelectionChangeCommitted(object sender, EventArgs e)
{
ComboBox cb = sender as ComboBox;
IComboBoxItemToggle item = cb.SelectedItem as IComboBoxItemToggle;
if (item != null)
{
if (!item.Enabled)
{
cb.SelectedIndex = LastSelection;
}
}
}
private void comboBox_DrawItem(object sender, DrawItemEventArgs e)
{
ComboBox comboBox = (ComboBox)sender;
if (e.Index >= 0)
{
IComboBoxItemToggle item = comboBox.Items[e.Index] as IComboBoxItemToggle;
if (!item.Enabled)
{
e.Graphics.FillRectangle(SystemBrushes.Window, e.Bounds);
e.Graphics.DrawString(comboBox.Items[e.Index].ToString(), comboBox.Font, Brushes.LightSlateGray, e.Bounds);
}
else
{
e.DrawBackground();
// Set the brush according to whether the item is selected or not
Brush br = ((e.State & DrawItemState.Selected) > 0) ? SystemBrushes.HighlightText : SystemBrushes.ControlText;
e.Graphics.DrawString(comboBox.Items[e.Index].ToString(), comboBox.Font, br, e.Bounds);
e.DrawFocusRectangle();
}
}
}
