FAXCOMEXLib和返回类型 [英] FAXCOMEXLib and Return Types

问题描述

我很久以前在VB 6.0中构建了一个ActiveX控件来方便传真，现在我需要将这个控件有效地转换为C＃类库。

I have an ActiveX control I built in VB 6.0 a long time ago to facilitate faxing and now I need to effectively translate this control into a C# class library.

I已经添加了对FAXCOMEXLib库的引用，并且Visual Studio在查看对象，属性和方法时没有任何问题，但是当我编译我的DLL时遇到两个问题。

I've added the reference to the FAXCOMEXLib library and Visual Studio has no problems seeing the objects, Properties, and Methods, but when I compile my DLL I run into two problems.

首先，类库似乎只包含我的库中实际使用的FAXCOMEXLib的属性和方法。这是一个问题，因为我通过只读属性公开COM对象。

Firstly, the class library only seems to contain the properties and methods from FAXCOMEXLib that are actually used within my library. This is a problem because I expose the COM objects through read-only properties.

public FaxServer   Server    {get { return m_Server;  }}
public FaxDocument Document  {get { return m_Document;}}

但如果你调用这些属性并尝试使用返回的对象，只能访问有限数量的方法和属性。我认为这可能是一个编译器选项，可以删除未使用的代码，但我找不到选项
来关闭它。

but if you call those properties and try to use the objects returned, you'll only have access to a limited number of methods and properties. I thought that this could have been a compiler option that cut out code that wasn't used, but I can't find the option to turn it off.

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我的第二个问题是FaxServer.Connect（）方法根据文档返回一个HRESULT，但是Visual Studio将它视为一个无效回归。我不能拥有这个，因为我需要能够检查使用这个
库的代码中的返回值。

My second problem is that the FaxServer.Connect() method returns an HRESULT according to the documentation, but Visual studio is treating it like a void return. I can't have this because I need to be able to check the return value in the code that uses this library.

  m_Server = new FaxServer();
  if (m_Server.Connect("") == 0) // error CS0019 here
        throw new Exception("Could not connect to Server.");

生成错误CS0019"运算符'=='不能应用于'void'和'int'"

Generates error CS0019 "Operator '==' cannot be applied to operands of type 'void' and 'int'"

我不知道为什么它认为FaxServer.Connect（）返回void。

I don't know why it thinks that FaxServer.Connect() returns void.

任何帮助都将非常感谢。

Any help would greatly be appreciated.

谢谢，

肯

推荐答案

您好TheCTutor，

Hi TheCTutor,

感谢您发布此处。

您的问题与VB6有关。 0，您可以在
vb6论坛获得合适的支持。

For your question is related to VB6.0, you could post a new thread in vb6 forum for suitable support.

Visual C＃论坛讨论并询问有关C＃编程语言，IDE，库，示例和工具的问题。

The Visual C# forum discuss and ask questions about the C# programming language, IDE, libraries, samples, and tools.

最诚挚的问候，

Wendy

这篇关于FAXCOMEXLib和返回类型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！