public virtual DropdownMenu Show(Control control)
{
Close();
menu = CreateNewMenu();
menu.Size = new Size(control.Width + menu.Padding.Horizontal, 0);
menu.Items.Clear();
foreach (object obj in this.Items)
{
menu.Items.Add(obj);
}
Rectangle controlRect = control.RectangleToScreen(control.ClientRectangle);
Rectangle screenBounds = Screen.FromControl(control).WorkingArea;
int menuHeight = menu.Height;
if (controlRect.Bottom + menuHeight < screenBounds.Bottom)
{
menu.Location = new Point(controlRect.Left - menu.Padding.Left, controlRect.Bottom);
}
else
{
menu.Location = new Point(controlRect.Left - menu.Padding.Left, controlRect.Left - menuHeight);
}
menu.Show();
menu.FocusItem(SelectedIndex);
return(menu);
}
private DropdownMenu CreateNewMenu()
{
DropdownMenu menu = new DropdownMenu
{
Font = Font,
MaxVisibleItems = this.MaxVisibleItems,
ItemHeight = this.ItemHeight,
StartPosition = FormStartPosition.Manual
};
menu.ItemSelected += MenuItemSelected;
return(menu);
}
public virtual DropdownMenu Show(Rectangle bounds)
{
Close();
menu = CreateNewMenu();
menu.Size = bounds.Size;
menu.Location = bounds.Location;
menu.Items.Clear();
foreach (object obj in this.Items)
{
menu.Items.Add(obj);
}
menu.Show();
menu.FocusItem(SelectedIndex);
return(menu);
}
public DropdownCollection(DropdownMenu menu)
{
this.menu = menu;
}