wxwidgets - Failed to create shared library with wx and STL, "multiple definition" error? -

I tried to create a shared library using wx and STL, and failed in an error of "multiple definition" Please see:

• wxPointListNode is not found in sources. The suspicious lines are like this:

    include / mathplot.h: 85: WX_DECLARE_LIST (wxPoint, PointList); 87 :: / mathplot.h included WX_DEFINE_LIST (PointList); Include / gpLineLayer.h: 16: typed Spread :: Deck & lt; MpPointLayer * & gt; MpPointList_t;   
   What's the problem?  
    
   
   
   All wxWidgets methods  define  spreads in the definition of something in their name And a definition can be used only once in a module, so it can not usually appear in a header file (unless you can guarantee that this is only a single source file). So just do not put it.  
   In addition, if this is your code, you should avoid using the legacy  WX_DECLARE_LIST  macro and simply  std :: list & lt; & Gt;  or  std :: vector & lt; & Gt; Or instead, if you really want to use only wx (which can be important only if you are targeting some embedded platforms without some SBT implementation), then  wxVector & lt ; & Gt; Use .