向Delphi客户机应用程序公开C COM服务器事件

我的问题与这两个问题非常相似:

C# component events?

C# - writing a COM server - events not firing on client

然而,为他们工作的并不适合我。类型库文件没有任何事件定义的提示,因此Delphi看不到它。如您所料,该类对于其他C应用程序也可以正常工作。

COM服务器工具:

• Visual Studio 2010
• .NET 4

Delphi应用程序:

• 德尔福2010
• 德尔福7

下面是代码的简化版本:

 /// <summary>
/// Call has arrived delegate.
/// </summary>
[ComVisible(false)]
public delegate void CallArrived(object sender, string callData);

/// <summary>
/// Interface to expose SimpleAgent events to COM
/// </summary>
[ComVisible(true)]
[GuidAttribute("1FFBFF09-3AF0-4F06-998D-7F4B6CB978DD")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface IAgentEvents
{
    ///<summary>
    /// Handles incoming calls from the predictive manager.
    ///</summary>
    ///<param name="sender">The class that initiated this event</param>
    ///<param name="callData">The data associated with the incoming call.</param>
    [DispId(1)]
    void OnCallArrived(object sender, string callData);
}

/// <summary>
/// Represents the agent side of the system. This is usually related to UI interactions.
/// </summary>
[ComVisible(true)]
[GuidAttribute("EF00685F-1C14-4D05-9EFA-538B3137D86C")]
[ClassInterface(ClassInterfaceType.None)]
[ComSourceInterfaces(typeof(IAgentEvents))]
public class SimpleAgent
{
    /// <summary>
    /// Occurs when a call arrives.
    /// </summary>
    public event CallArrived OnCallArrived;

    public SimpleAgent() {}

    public string AgentName { get; set; }

    public string CurrentPhoneNumber { get; set; }

    public void FireOffCall()
    {
        if (OnCallArrived != null)
        {
            OnCallArrived(this, "555-123-4567");
        }
    }
}

类型库文件具有属性和方法的定义,但没有可见的事件。我甚至在Delphi的查看器中打开了类型库来确保这一点。Delphi应用程序可以查看和使用任何属性、方法和函数。只是看不到事件。

我会感谢你的任何建议或文章。

谢谢!