accessing bitmaps on an .xrc compiled into .cpp

[personaje]

On 10/16/07, personaje <personaje at gmail.com> wrote:
> On 10/16/07, Jason Dolan <jayson.dolan at gmail.com> wrote:
> > wxXmlResource::Get()->InitAllHandlers();
> > InitXmlResource();   //Or whatever your xmlresource function is
> > called  within the dynamically generated cpp file
> > wxFrame *pMyFrame;
> > wxXmlResource::Get()->LoadFrame(pMyFrame, NULL,
> > wxT("The_frames_name"));
> > wxBitmap *pMyBitmap = XRCCTRL(*pMyFrame, "bitmap_name", wxBitmap);
> >
>
> nope, I get an invalid cast from wxWindow* to wxBitmap*   : (

and it's OK because XRCCTRL uses findwindow : )

Found it, not as straightforward as I would like but :

---------- code ----------

#define GET_BITMAP_RESOURCE(Url,Bitmap) {	
                      \
	wxFSFile *fsfile = wxFileSystem().OpenFile(Url, wxFS_READ | wxFS_SEEKABLE);\
	if (fsfile == NULL) {
                                             \
		wxLogError(_("XRC resource: Cannot create bitmap from '%s'."),Url);		  \
		Bitmap = wxNullBitmap;	}									    \
	else	{													       \
		wxImage img(*(fsfile->GetStream()));								\
		Bitmap = wxBitmap(img);	}								           \
	delete fsfile;	}

---------- end code ----------

Taken and adapted from xmlres.cpp


Hope it works for someone else!

Regards