Question

I define a wxObjArray in my TMainFrame.h as follows:

#ifndef __TMainFrame__
#define __TMainFrame__

#include "MyApp_gui.h"
//// end generated include

#include "TRunThread.h"

#include <wx/dynarray.h>

class TMove;

WX_DECLARE_OBJARRAY(TMove, TMoveArray);

/* ...Class TMainFrame... */
/* ...Class TMove... */

#endif // __TMainFrame__

Now I want to use the class TMoveArray created by WX_DECLARE_OBJARRAY in my TRunThread.h.
But that class cannot be found (GCC: ‘TMoveArray’ has not been declared)

#ifndef TRUNTHREAD_H_INCLUDED
#define TRUNTHREAD_H_INCLUDED

#include <wx/wx.h>
#include "TMainFrame.h"

// doesn't work: WX_DECLARE_OBJARRAY(TMove, TMoveArray);

class TRunThread : public wxThread
{
  public:
    wxThreadError Create(TMoveArray moves);
};

#endif // TRUNTHREAD_H_INCLUDED

The source file TRunThread.cpp:

#include <wx/arrimpl.cpp> // this is a magic incantation which must be done!
WX_DEFINE_OBJARRAY(TMoveArray);
#include "TRunThread.h"

/* ...Code... */

I’ve also tried with the WX_DEFINE_OBJARRAY directive.

Question: How to include a wxObjArray correctly?

Answer 1

You are going to need both WX_DECLARE_OBJARRAY and WX_DEFINE_OBJARRAY. The latter goes to an implementation file.

The reference has a full usage example and more comments.

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And you might also just use std::vector.