I opened an old Direct3D program and tried recompiling it, only get the error LNK2001 Unresolved external symbol WKPDID_D3DDebugObjectName. This is obviously an error from a definition for an element missing. I checked the source code and I saw that the object of interest was defined in d3dcommon.h. Confusing at first, but I finally realized that for the object to be resolved by the linker I needed to include dxguid.lib in the project. There are a few ways to link to a library. I prefer to explicitly link in source code instead of linking in the project settings. In one of my sources files, I only needed to include the following.

#pragma comment(lib, "dxguid.lib")

I only need this file linked when I am compiling in debug mode. A conditional compilation statement wrapped around this will take care of making it conditionally linked.

#if defined(_DEBUG)
#pragma comment(lib, "dxguid.lib")
#endif

With that change, the program compiles and the error has gone away!

For those curious, the D3D program in question is something I have appended in the C++ Application Base Class project. One day I intend to make a base class for a D3D program base class to go along with the D2D base class. The beginnings of my experimentation for it are within that project.

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