   Linker Problems
  In a my "CRenderPane" class under "protected:" I have:virtual void onInitialUpdate();In my cpp I did this:void CRenderPane::onInitialUpdate(){//Nothing}When I compile I get this:apiFunctions.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall CRenderPane::onUpdate(void)" (?onUpdate@CRenderPane@@MAEXXZ)I don't know why I am getting this error. Help will be much appreciated.~Justin12343   
  It's complaining about a different function than the one you listed.onUpdatevs:onInitialUpdate   ;  Nypyren makes a point, but are you calling the erronous method from another project and you just forgot to rebuild libraries you depend on?   ;  Never mind now it works   