[PyQt] Conversion problem from QImage to QPixmap

[Daniele Esposti]

Hi Nicola,

fromImage()  is a static method, so change your code like that:

pix = QPixmap.fromImage( img )


On 27 August 2010 15:21, Nicola Creati <ncreati at inogs.it> wrote:
> Hello,
> I'm having troubles trying to convert from a QImage to a QPixmap. The
> resulting QPixmap is always invalid (isNull method is always True). This is
> a short code that reproduce my problem:
>
>
> from PyQt4.QtGui import *
> from PyQt4.QtCore import *
> import sys
>
> app = QApplication(sys.argv)
>
> img = QImage("image.jpeg")
>
> pix = QPixmap()
> pix.fromImage(img)
> pix.save("output.jpeg", 'JPEG')
>
> l = QLabel()
> l.setPixmap(pix)
> l.show()
>
> app.exec_()
>
> The Qlabel shows nothing and no image file is saved from the QPixmap object
> pix. I have tried with several different image file but I got always the
> same result.
>
> Please, can someone help?
>
> Nicola
>
> --
> Nicola Creati
> Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS
> www.inogs.it Dipartimento di Geofisica della Litosfera Geophysics of
> Lithosphere Department CARS (Cartography and Remote Sensing) Research Group
> http://www.inogs.it/Cars/ Borgo Grotta Gigante 42/c 34010 Sgonico - Trieste
> - ITALY ncreati at ogs.trieste.it
> off.   +39 040 2140 213
> fax.   +39 040 327307
>
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-- 
Daniele Esposti