/// <summary>
/// Initializes a new instance of the Behavior class by copying it from
/// another Behavior object. </summary>
/// <param name="behavior">
/// The Behavior object to copied (and then disposed of). It must not be null. </param>
/// <exception cref="ArgumentNullException">behavior is null. </exception>
/// <remarks>
/// This constructor is <c>protected</c> since this class is only meant to be used as a base for other behaviors.
/// After the behavior.TextBox object is copied, Dispose is called on the behavior parameter. </remarks>
/// <seealso cref="TextBox" />
/// <seealso cref="Dispose" />
protected Behavior(Behavior behavior)
{
if (behavior == null)
throw new ArgumentNullException("behavior");
TextBox = behavior.TextBox;
this.flags = behavior.flags;
behavior.Dispose();
}
/// <summary>
/// Initializes a new instance of the TextBox class by explicitly assigning its Behavior field. </summary>
/// <param name="behavior">
/// The <see cref="Behavior" /> object to associate the textbox with. </param>
/// <remarks>
/// This constructor provides a way for derived classes to set the internal Behavior object
/// to something other than the default value (such as <c>null</c>). </remarks>
protected TextBox(Behavior behavior) { this.behavior = behavior; }