QPixmap not read svg

[Mikeeeeee]

Hi!
In Ubuntu 20 QPixmap read svg, but in Windoes 10 QPixmap not read svg. Why? How QPixmap can read svg-file?

[jsulm]

@Mikeeeeee How did you install Qt on Windows? How do you read SVG (show code)?

[Mikeeeeee]

I use PyQt, I install conda and after install pyqt in conda. This code work in Ubuntu 20:

        labelLogo = QLabel()
        pixmap = QPixmap("./images/logo.svg")
        pixmap = pixmap.scaled(200,200, QtCore.Qt.KeepAspectRatio)
        labelLogo.setPixmap(pixmap)

[jsulm]

@Mikeeeeee said in QPixmap not read svg:

./images/logo.svg

this is a relative path. You should at least check whether pixmap is null or not: https://doc.qt.io/qt-5/qpixmap.html#isNull
Also, check whether you have the SVG plug-in: plugins/imageformats/libqsvg.so

[Mikeeeeee]

@jsulm but this work:

pixmap = QPixmap("./images/logo.png")

And I use Windows 10, Windows haven't .so. In conda I haven't file libqsvg. Hwot me need to do?

[jsulm]

@Mikeeeeee said in QPixmap not read svg:

Hwot me need to do?

Search for *svg* in your PyQt set-up...

[Mikeeeeee]

I have only SVGExporter.py in pyqtgraph

[jsulm]

@Mikeeeeee So, no qsvg.dll? If so, then that's the reason why you can't load SVG images.

[Mikeeeeee]

What should I do? How can I add the desired library to the сonda?

[jsulm]

@Mikeeeeee Maybe you need to install the SVG plug-in? I never used conda, so check whether this plug-in requires an additional package to be installed.

[Mikeeeeee]

@jsulm said in QPixmap not read svg:

SVG plug-in

What is the correct name of this plugin?

[JoeCFD]

@Mikeeeeee wrong way to load svg because you may lose resolution. You never scale a svg picture.
QPixmap * pixmap = new QPixmap( QSize( 200, 200 ) );
pixmap->fill( Qt::transparent );
paint pixmap with svg engine.

[jsulm]

@Mikeeeeee said in QPixmap not read svg:

What is the correct name of this plugin?

I already gave it you before: qsvg.dll

[Mikeeeeee]

I reinstall conda and after its work