I have a project with qml files in a qrc file
I don't use GeneratedFiles for the temporary qt files but we use a temp folder where we put all the temporary files,
My folder layout is
root

• src (source files
• qml (qml files)
• temp (Configuration independent temp files)
• temp/GeneratedFiles (Configuration independent qt generated files)
• temp$(Platform)-$(Configuration) (Configuration specific temp files)
• temp$(Platform)-$(Configuration)/GeneratedFiles (Configuration specific qt generated files)

I tried to enable Qt Quick Compiler but it immediately failed because the default is to use the GeneratedFiles folder but it was missing and the tools was not creating it.

So i changed the path used in all the Qt Quick Compiler settings from
$(ProjectDir)GeneratedFiles****
to
$(ProjectDir)temp\GeneratedFiles****

After this change visual studio created all the ComponentName_qml.cpp fils in $(ProjectDir)temp\GeneratedFiles

But now the process is failing during the build of the ComponentName_qml.cpp file with the following error message

1>C:\MyProject\temp\GeneratedFiles\ComponentName_qml.cpp : fatal error C1083: Cannot open compiler generated file: 'C:\MyProject\temp\x64-Release\C:\MyProject\temp\GeneratedFiles\ComponentName_qml.obj': Invalid argument

Some interesting project settings are

IntDir = temp\$(Platform)-$(Configuration)\
QtQuickCompiler.CacheFile = $(ProjectDir)temp\GeneratedFiles%<Filename>_%<Suffix>.cpp
C++.ObjectFileName = $(IntDir)/%(RelativeDir)/