/// <summary>
/// <para>Private constructor</para>
/// <para>构造函数私有化</para>
/// </summary>
/// <param name="handler">External event handler</param>
private ExternalEventWheel(IExternalEventHandlerWheel handler)
{
Handler = handler;
}
/// <summary>
/// <para>Create an external event to raise</para>
/// <para>创建一个外部事件</para>
/// </summary>
/// <param name="handler">External event handler</param>
/// <returns>An external event through which the user can trigger the executing of the handler</returns>
public static ExternalEventWheel Create(IExternalEventHandlerWheel handler)
{
//Some other operations may be done here(e.g parameter validating)
return(new ExternalEventWheel(handler));
}
