c++ - 无法在 Visual C++ ATL 项目中使用系统命名空间

Question

我有一个 ATL 项目，我必须在其中使用系统命名空间来设置环境变量。我试过:

#using <mscorlib.dll>
using namespace System; 

在我的 dllmain.cpp 文件中。

在构建时，我得到了:

fatal error C1190: managed targeted code requires a '/clr' option even after adding /clr option project->properties->common language runtime support.

如果我删除#using mscorlib.dll，我会得到:

error C2871: 'System' : a namespace with this name does not exist

如何在我的 ATL 项目中使用这个命名空间？

Answer 1

参见 this link来自 MSDN。

我在这里引用答案:

As you are including a reference to mscorlib.dll you need to let thecompiler know that you are targetting the .NET Runtime. The compilerswitch that controls this is /clr - hence the error message you areseeing. To enable this option from the project system in the SolutionExplorer pane right-click on your project, select ConfigurationProperties.General and then select "Common Language Runtime support"and from the drop-down list select "Common Language Runtime Support(/clr)".

In C++ identifiers are case-sensitive: I suspect that the name shouldbe System::Console.