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List:       kde-devel
Subject:    Problems using bitBlt
From:       Daniel <dadecal () teleline ! es>
Date:       2000-03-08 14:12:14
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I use a bitBlt inside a paintEvent to show a QPixmap buffer in to which
I draw, but nothing is shown on the view.
Could somebody please check the code to see what's wrong?
Thank's a lot for your help
Daniel de losReyes
dadecal@arq.upv.es

bool KonStructDoc::importDxf(const char *filename, const char *format
/*=0*/)
{
  QFileInfo fileInfo(filename);
  title=fileInfo.fileName();
  absFilePath=fileInfo.absFilePath();

  QFile importfile(filename);
 if (importfile.open(IO_ReadOnly)){
  evaluateDxfFile(importfile);
  importfile.close();

  size=QSize(300,300);
  buffer.resize(size);
  buffer.fill(black);
  QPainter paint;
  paint.begin(&buffer);
   paint.scale(1,-1);
   paint.translate(0,-300);
   paint.setPen(blue);
   paint.setWindow(0,0,300,300);
   KonElement *el;
   for (el=element->first();el !=0; el=element->next())
   el->draw(paint);
   paint.end();
   return true;
 }
 else return false;
}

void KonGraphic::paintEvent(QPaintEvent *e){
 QFrame::paintEvent(e);
 QRect r = e->rect();
 bitBlt(this,r.x(),r.y(),&getDocument()->buffer,r.x(),r.y(),r.width(),r.height());

};

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