[Qt-interest] how to read bitmap emdedded in XML

[Atlant Schmidt]

André:


>     http://doc.trolltech.com/3.3/qpixmap.html
> Qt 3.3? Let's keep that version where it belongs: in the Troll Museum :-)

  Sorry! Google got me! (I wish we could get the page rank on all
  those rank old Qt 3.3 pages set much lower than the page rank
  on the Qt 4.6.2/3 pages!)

                                                Atlant

________________________________
From: qt-interest-bounces at trolltech.com [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Andre Somers
Sent: Tuesday, August 17, 2010 14:45 PM
To: qt-interest at trolltech.com
Subject: Re: [Qt-interest] how to read bitmap emdedded in XML

Hi,

Op 17-8-2010 19:49, Atlant Schmidt schreef:

Eckhard:



  There's:



     QImage::loadFromData( const uchar * data,

                           int len,

                           const char * format = 0 )





  That looks like it's close to what you want, except

  that it delivers a QImage instead of a QPixmap.
I was more thinking about QImage::fromData(const QByteArray& data, char* format = 0). And since you know the format from the file name...


But then...



    http://doc.trolltech.com/3.3/qpixmap.html
Qt 3.3? Let's keep that version where it belongs: in the Troll Museum :-)



    There are (slow) functions to convert between

    QImage and QPixmap: convertToImage() and

    convertFromImage().



  ...if you really need the pixmap and not the image.
Depends on the platform and rendering engine you use. If you use the rasterengine, it's not that slow anymore.

André



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