[AnyOldName3]

This should stop other build failures sneaking through. Helpfully, the windows-latest image has multiple versions of the MSVC compiler installed, and CMake can pick one based on the -T argument.

[AnyOldName3]

This is still failing to build with errors like:

C:\openmw-dev\mygui\UnitTests\UnitTest_Delegates\Main.cpp(32,59): error C2248: 'MyGUI::delegates::detail::DelegateBase::clear': cannot access protected member declared in class 'MyGUI::delegates::detail::DelegateBase' [C:\openmw-dev\mygui\build-GL\UnitTests\U
nitTest_Delegates\UnitTest_Delegates.vcxproj]
  (compiling source file '../../../UnitTests/UnitTest_Delegates/Main.cpp')
      C:\openmw-dev\mygui\MyGUIEngine\include\MyGUI_Delegate.h(125,10):
      see declaration of 'MyGUI::delegates::detail::DelegateBase::clear'
      C:\openmw-dev\mygui\MyGUIEngine\include\MyGUI_Delegate.h(98,10):
      see declaration of 'MyGUI::delegates::detail::DelegateBase'

MyGUI::delegates::detail::DelegateBase::clear and MyGUI::delegates::detail::DelegateBase::empty do indeed appear to be protected members referred to outside of where they'd be accessible. It builds just fine if those two members are made public.