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怎么用dll？

[英]how to use dll?

原文 2010-02-24 17:13:19 9 1 c++

i have have a program/project in vs2008 that uses a third party static lib. 我在vs2008中有一个使用第三方静态库的程序/项目。 Now, it has come to my attention that i need to offer some api's via a dll. 现在，我注意到我需要通过dll提供一些api。 Apparently a thrid party program will use my dll via the apis i will provide. 显然，一个第三方计划将通过我将提供的api使用我的dll。

Can anyone give me some direction as to what I need to do? 任何人都可以给我一些方向来指导我需要做什么吗？ would i need to just create a dll in vs2008 and just copy and paste my method logic in the apis that i provide? 我需要在vs2008中创建一个dll，只需将我的方法逻辑复制并粘贴到我提供的api中吗？

are there any potential issues i need to worry about? 我有什么潜在的问题需要担心吗？

thank you 谢谢

1 个解决方案

I suggest you check out this MSDN tutorial on creating & using DLLs. 我建议你查看这个关于创建和使用DLL的MSDN教程。

There are unfortunately many potential issues to think about. 不幸的是，有许多潜在的问题需要考虑。 A very brief and by no means complete list of the ones that pop in to my head: 一个非常简短的，绝不是完整的列表，列在我脑海中：

You need to be aware of potential errors passing CRT objects across DLL boundaries 您需要了解跨DLL边界传递CRT对象的潜在错误
If you allocate objects in one module and deallocate them in the other, your DLL and the client code must link to the same CRT 如果在一个模块中分配对象并在另一个模块中解除分配，则DLL和客户端代码必须链接到同一个CRT
It is very important that you keep the interface seperate from the implementation in your DLLs header files. 将接口与DLL头文件中的实现分开是非常重要的。 This means you often can't do thing like use std::string as function parameters, or even as private member variables. 这意味着您经常无法使用std :: string作为函数参数，甚至作为私有成员变量。