/// <summary>
/// Handles the container clicked event. This is to act as a compatibility
/// layer for combobox focus behaviour: if we click on a form, focus is not
/// given to the form and scrolling would still remain in the combobox.
/// </summary>
private static void OnContainerClicked(object sender, EventArgs e)
{
ScrollableControl container = (ScrollableControl)sender;
container.Focus();
}