在 C++ 项目中包含 .idl 文件
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Including a .idl file in a C++ project
提问by wyatt
I'm building a project in C++ which uses DirectShow's video capture library to connect to a camera. The video card manufacturer (BlackMagic) has provided .idl (Interface Definition Language) files which add new capture graphs to the standard collection.
我正在用 C++ 构建一个项目，它使用 DirectShow 的视频捕获库连接到相机。视频卡制造商 (BlackMagic) 提供了 .idl（接口定义语言）文件，这些文件将新的捕获图添加到标准集合中。
Thing is, I've never come across a .idl file, and the very vague "include the file" direction doesn't help much. Including it with a #include directive doesn't throw up any errors, but the program also fails to pull in the various definitions which I presume it's intended to add, since it's the only file I'm told to include with the project.
事实是，我从来没有遇到过 .idl 文件，而且非常模糊的“包含文件”方向也无济于事。将它与 #include 指令一起包含不会引发任何错误，但该程序也无法引入我认为它打算添加的各种定义，因为它是我被告知要包含在项目中的唯一文件。
My question is: how should one include a .idl file in a project?
我的问题是：如何在项目中包含 .idl 文件？
回答by Sasha
For example: you have an AFileName.idl 1. Add the AFileName.idl to you project: Right Click on The project->Add->Existing Item... 2. Click Right on The AFileName.idl from the project->Compile 3. The step 2 will generate AFileName_h.h, AFileName_i.c, AFileName_p.c,... 4. Now you can #include "AFileName_h.h" and use it, you also may need to add AFileName_i.c or other generated files to your project depending on your needs.
Observation: the steps are described for VS2008 but I don't think VS2010 is different in that perspective.
观察：这些步骤是针对 VS2008 描述的，但我认为 VS2010 从这个角度来看并没有什么不同。
