指向整体式和背面的指针 [英] Pointer to integral type and back

问题描述

我需要将指向对象的指针转换为整数类型并将其传递给C＃模块，然后C＃模块将其异步传递回C ++模块。我不能只将这个指针存储到我的C ++模块中的对象中，并在稍后的回调点使用它作为参考
，这是排除的。我需要将它传递给C＃并将其恢复到我的回调函数中。 
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此链接：

https：// msdn .microsoft.com / zh-CN / library / windows / desktop / aa384242（v = vs.85）.aspx

建议使用UINT_PTR或INT_PTR进行转换，但如何将此类型传递给C＃ 。可以传递为long还是double？
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此外，当C＃模块将其传回long或double时，如何将其转换回指针类型？



$ T $，
Jy

I have a need to convert a pointer to an object to an integral type and pass it to a C# module, which in turn passes it back to the C++ module asynchronously. I cannot just store this pointer to object in my C++ module and use it for reference later at the point of callback, that is ruled out. I need to pass it to C# and get it back in my callback function. 

This link:
https://msdn.microsoft.com/en-us/library/windows/desktop/aa384242(v=vs.85).aspx
suggests using UINT_PTR or INT_PTR to convert, but how do I pass this type to C#. Can it be passed as long or double?

Also, when the C# module passes it back as long or double, how do I convert it back to a pointer type?

TIA,
Jy

推荐答案

我认为
IntPtr 结构可用于存储指针。在C＃参数的声明中使用 IntPtr ，在本机C ++中使用
INT_PTR 。显示模块之间交互的一些细节。

I think that the IntPtr structure can be used to store pointers. Use IntPtr in the declaration of C# parameters, and INT_PTR in native C++. Show some details about the interaction between modules.

 

 

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