[poppler] Poppler::renderToImage() error

[alessandro mason]

Hi,
I made a patch for PureData tha includes this code:

poppler::poppler()
{
    //ctor
}
poppler::poppler(const char* file)
{//ctor
    loaded=loadedpage=save=true;
    document= Poppler::Document::load(file);//open the document file
    if (!document || document->isLocked()) {
            loaded=false;
                delete document;
                }

}//end cosntructor

  void poppler::selPage(int page){
        poppler::pdfPage=document->page(1);  // Document starts at page 0
            if (pdfPage == 0) {
                loadedpage=false;
                }
            // Generate a QImage of the rendered page
    loaded=true;
   tmp = poppler::pdfPage->renderToImage(72,72,-1,-1,-1,-1);//
    if (tmp.isNull()) {
      loaded=false;
    }

    filename=QString("page.bmp");
    save=tmp.save(filename,"BMP",50);//savepage

}

poppler::~poppler()
{
    //dtor
    delete poppler::pdfPage;
    delete poppler::document;
}

With Debian this code works, but now with Ubuntu 11.4 doesn't work because
it doesn't save the image.
Can anyone help me?
Sorry for my english

Mason Alessandro
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