I added Include Directories to the project (Configuration Properties > VC++ Directories...). However, I still get “No such file or directory” error.
There is no such a problem when I do the same in ordinary C++ Console App project.

Hi, the Visual Studio project properties are only used for intellisense and considered read-only for Arduino.

Are you trying to add paths that allow header files to be referenced or add paths that allow additional .cpp/.c files to be compiled.

Tim@Visual Micro wrote on Oct 8^th, 2019 at 4:36pm:

Are you trying to add paths that allow header files to be referenced or add paths that allow additional .cpp/.c files to be compiled.

I am trying to add paths that allow header files to be referenced.

To compile additional .cpp I add them to the current project.

Great. Currently you have to add the includes as -I properties in extraFlags via the F4 project properties

-I"some path" -I"some path2";

If you follow the guide in yellow above you will see all the build variables such as, if I recall,  "project_path"

You can use {build variables} to make relative paths if required.

-I"{project_path}/../../somepath" -I"some path2";