How to define relative paths in Visual Studio Project?
Instead of using relative paths, you could also use the predefined macros of VS to achieve this.
$(ProjectDir) points to the directory of your .vcproj file, $(SolutionDir) is the directory of the .sln file.
You get a list of available macros when opening a project, go to
Properties → Configuration Properties → C/C++ → General
and hit the three dots:
In the upcoming dialog, hit Macros to see the macros that are predefined by the Studio (consult MSDN for their meaning):
You can use the Macros by typing $(MACRO_NAME) (note the $ and the round brackets).
I have used a syntax like this before:
$(ProjectDir)..\headersor
..\headersAs other have pointed out, the starting directory is the one your project file is in(vcproj or vcxproj), not where your main code is located.