[Qt-interest] Drawing rectangular

[Samuel Rødal]

Yuvaraj R wrote:
> still i am not getting
> 
> i am getting following things in log
> 
> 
> QPainter::begin: Paint device returned engine == 0, type: 1
> 
> QPainter::drawRects: Painter not active
> 
> QPainter::end: Painter not active, aborted
> 
> QPainter::setPen: Painter not active
> 
> QPainter::drawRects: Painter not active
> 
> 
> Thanks
> 
> 
> Yuvaraj R
> 
>     To call the base class paint event, your text browser class' paint
>     event should look like this:
> 
> 
>     void text_browser::paintEvent(QPaintEvent *e)
>     {
>            QTextBrowser::paintEvent(e);
>            QPainter painter;
>            painter.setPen(Qt::red);
>            painter.drawRect(100,100,100,100);
>     }
> 
>     I don't think calling accept() makes any difference for paint events.
> 
>     --
>     Samuel
> 

Right, that should have been QPainter painter(this); and not just 
QPainter painter;

But another problem is that QTextBrowser is an abstract scroll area, 
which means that its paint event actually paints into the viewport 
widget, not into the widget itself.

Try "QPainter painter(viewport());" instead.

Refer to http://doc.trolltech.com/4.5/qabstractscrollarea.html#details 
for more information on QAbstractScrollArea.

--
Samuel