try disabling warning 4947 in ConfigOption.h

(it doesn't matter..  just an obsoletion notice for `Windows::Forms::Control::Scale`, which probably isn't going away anytime soon.

source-code/source/plugins/Launcher/ConfigOption.h

@@ -1,4 +1,6 @@
 #pragma once
+#pragma warning(push)
+#pragma warning(disable: 4947)
 
 #define WIN32_LEAN_AND_MEAN             // Exclude rarely-used stuff from Windows headers
 // Windows Header Files
@@ -1180,3 +1182,5 @@ Panel^ MakePanel(int width, int height, std::vector<ConfigOptionBase*> &cfg, Too
 
 	return outpanel;
 }
+
+#pragma warning(pop)