模板中的静态成员变量，具有多个dll [英] Static member variable in template, with multiple dlls

问题描述

我的代码是建立到多个.dll文件，我有一个模板类，有一个静态成员变量。

My code is built to multiple .dll files, and I have a template class that has a static member variable.

我想要这个静态成员的同一个实例变量在所有dll中可用，但它不工作：我看到不同的实例（不同的值）在每个。

I want the same instance of this static member variable to be available in all dlls, but it doesn't work: I see different instance (different value) in each of them.

当我不使用模板，没有问题：初始化其中一个源文件中的静态成员，并在类上使用__declspec（dllexport）和__declspec（dllimport）指令。但它不适用于模板。有没有办法使它工作？

When I don't use templates, there is no problem: initialize the static member in one of the source files, and use __declspec(dllexport) and __declspec(dllimport) directives on the class. But it doesn't work with templates. Is there any way to make it work?

我看到一些提出的解决方案使用extern，但我想我不能使用，因为我的代码应该与视觉工作室2002和2005合作。

I saw some proposed solutions that use "extern", but I think I can't use it because my code is supposed to work with visual studio 2002 and 2005.

谢谢。

澄清：我想要一个不同的实例的每个不同类型的模板实例化的静态变量。但是如果我在两个不同的dll中实例化相同类型的模板，我想在两者中有相同的变量。

Clarification: I want to have a different instance of static variable per each different type of template instantiation. But if I instantiate the template with the same type in 2 different dlls, I want to have the same variable in the both of them.

推荐答案

创建模板专用化，然后导出专业化的静态成员。

Create template specialization and then export the static members of the specialization.

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