protected virtual void ShowList()
{
if (this.popup.Visible == false)
{
this.list.SelectedIndex = -1;
this.UpdateList();
Point p = this.PointToScreen(new Point(0, 0));
p.X += this.PopupOffset.X;
p.Y += this.Height + this.PopupOffset.Y;
this.popup.Location = p;
if (this.list.Items.Count > 0)
{
this.popup.Show();
if (this.hook == null)
{
this.hook = new WinHook(this);
this.hook.AssignHandle(this.FindForm().Handle);
}
this.Focus();
}
else
{
SelectedItem = null;
}
}
else
{
this.UpdateList();
}
}
protected virtual void HideList()
{
this.Mode = EntryMode.Text;
if (this.hook != null)
{
this.hook.ReleaseHandle();
}
this.hook = null;
// only raise event when the popup is still visible; to avoid duplicate events
if (this.popup.Visible)
{
OnItemSelected();
}
this.popup.Hide();
}