Handmade Network lead and developer of The Melodist
After building the file with the build.bat I enter devenv \build\win32_handmade.exe to the command line (after having added VS to my PATH, which it initially wasn't in) but VS starts up only to tell me...
You should just do devenv build\win32_handmade.exe from the handmade directory, and then it should work.
Does "W:\build\win32_handmade.exe" file actually exists?
Is this final VS2019 version? If you had preview versions installed before it may messed up something.
Can you debug C++ applications from solution created in VS?