C++ Question LNK2019 error despite including directories?

[Hlynkacg]

So I'm working with VS2010 and like the title says. I'm getting lnk2019 errors for all functions declared as the part of "ComponentVessel" class despite having instrument.h included in my project and Orbiter/Orbitersdk/samples/common/vessel is on my list of additional include directories. Visual studio clearly knows where to find the file as a right-click + "go to declaration" on the effected functions works normally. Ass such the error clearly lies in the linker. Is there somewhere else I need to add the folder string too?

 

[Face]

So I'm working with VS2010 and like the title says. I'm getting lnk2019 errors for all functions declared as the part of "ComponentVessel" class despite having instrument.h included in my project and Orbiter/Orbitersdk/samples/common/vessel is on my list of additional include directories. Visual studio clearly knows where to find the file as a right-click + "go to declaration" on the effected functions works normally. Ass such the error clearly lies in the linker. Is there somewhere else I need to add the folder string too?

Could it be that you try to access a non-virtual method of a class not implemented in your project? If so, the linker does not know where the JMP address is, so it gives you link errors. Try to declare the method virtual, this way the linker knows where to look: the virtual table of the class.