可以使用.net 3.5 Action或Func作为编组的非托管代理？ [英] Can you use .net 3.5 Action or Func as Marshalled unmanaged delegates?

问题描述

阅读动态地调用.net中的非托管dll

我一直在尝试修改代码，以符合我的喜好。我创建了一个实现idisposable的类来封装加载调用，并在需要时释放它们。然而，如果可以使用匿名委托，我似乎无法弄清楚语法。

I've been trying to modify the code to my liking. I made a class that implements idisposable to wrap load calls in and free them when needed. However I can't seem to figure out the syntax if it is possible to use anonymous delegates with it.

var loaded=DynamicLibraryLoader.TryLoad("User32.dll");
var beeper=loaded.GetProcAddress("MessageBeep");
var type=typeof(Action<UInt32>);
Action<UInt32> beepAction2=(Action<UInt32>) Marshal.GetDelegateForFunctionPointer(beeper,type);

最后一行抛出一个参数异常，指出指定的类型不能是通用类型定义。有没有办法解决这个问题，或者我必须提供一个命名的委托来做任何非托管的？

The last line throws an argument exception saying that the specified Type must not be a generic type definition. Is there a way around this or do I have to provide a named delegate to do anything unmanaged?

对于任何有兴趣的人，你可以在Windows中默认做什么，非托管代码 - 链接（创建快捷方式，动态加载DLL）

For reference of any interested in what you can do by default in windows with unmanaged code - Link (create shortcuts,dynamically load a DLL)

推荐答案

正如异常所示，在将本机函数指针转换为托管代码时，必须使用非泛型委托。

As the exception indicates, you must use a non-generic delegate when converting a native function pointer to managed code.

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