libvisio contains project files for several versions of MSVC. But these project files are normally ignored by developers when new source files or dependencies are added, so they are very likely out-of-date.
The goal is to update the project files used by the current version(s) of MSVC to make it possible to build the release tarballs. (IOW, it is not required to be able to build a git checkout. The difference is that there are few generated header files (*.inc) that are included in release tarballs, but must be generated from their sources (*.gperf) when building from git.) Project files for older MSVC versions should be removed.
The project files are in build/win32.
JanI is default CC for Easy Hacks (Add Jan; remove LibreOffice Dev List from CC)