<![CDATA[QLabel.setText() Vs. QPainter.drawText()]]>hi-

I would like to draw dynamic labels on GL Widget (every frame the text is changing).
is there a difference between QLabel.setText() and QPainter.drawText()?
what's more efficient?
note that:

  • the setting of these labels is done through paintGL() override function
  • if i'll use QLabel- i can initialize labels on Init() func (called only once), so maybe its more efficient using QLabel??

thanks!

]]>https://forum.qt.io/topic/105653/qlabel-settext-vs-qpainter-drawtextRSS for NodeWed, 15 Apr 2026 08:56:46 GMTMon, 05 Aug 2019 10:12:20 GMT60<![CDATA[Reply to QLabel.setText() Vs. QPainter.drawText() on Tue, 06 Aug 2019 05:21:22 GMT]]>@mrjj I understand, tnx!

]]>https://forum.qt.io/post/544856https://forum.qt.io/post/544856Tue, 06 Aug 2019 05:21:22 GMT<![CDATA[Reply to QLabel.setText() Vs. QPainter.drawText() on Mon, 05 Aug 2019 11:37:40 GMT]]>Hi
if you check QLables paintevent here
https://code.woboq.org/qt5/qtbase/src/widgets/widgets/qlabel.cpp.html
You can see its pretty huge.
so my guess would be qpainter drawText is faster, solely due to much less instruction pr frame to process.

]]>https://forum.qt.io/post/544733https://forum.qt.io/post/544733Mon, 05 Aug 2019 11:37:40 GMT