Where is qedit.h?

Qedit.h did not ship in the Windows 7 SDK. Qedit.h is not compatible with Direct3D headers later than version 7 and no longer ships in the Windows SDKs.  The qedit.h file included with earlier versions of the Windows SDK is dependent on some header files which previously shipped with the Microsoft DirectX SDK, such as dxtrans.h.  Newer DirectX SDKs do not include these files.

If you require qedit.h, the recommendation for now is to install and use the August 2007 DirectX SDK, which does include all files needed to build qedit.h.  To install the August 2007 DirectX SDK, go to https://www.microsoft.com/downloads and search All Downloads for "dxsdk_aug2007.exe".