[Interest] QTableWidget::setCellWidget() overrides widget's palette?

Elvis Stansvik elvstone at gmail.com
Fri Apr 20 08:45:15 CEST 2018

Probably not your problem, but have you tried setAutoFillBackground(true)
on your plot? I have that in one of my Qwt apps.


Den 20 apr. 2018 1:51 fm skrev "Murphy, Sean" <smurphy at walbro.com>:

> I'm attempting to create a data view that plots sample data from different
> data sources using a QwtPlot embedded in a QTableWidget and I'm having a
> little trouble getting the plot's palette to hold after calling
> QTableWidget::setCellWidget. So the idea is one data source per row, with a
> plot and then some statistical data (min, max, mean, and standard deviation
> for now). I whipped up some sample code, and it works so far - I'm getting
> the plots inserted into the correct column of the table. The problem is
> that plot's palette isn't coming out the way I want it.
> I've attached a screenshot of what the my dataPlot class (which inherits
> from QwtPlot) looks like both when it's not embedded in a table cell (the
> upper half of the application), and what it looks like when it's in the
> table cell (lower half). It appears the color of the QwtPlotCurve's pen
> remains intact when putting plots in cells, but the plot canvas' background
> color is somehow getting over written. Any ideas on how to fix it?
> I've also attached the code. You'll need to download and compile Qwt (
> https://sourceforge.net/projects/qwt/files/qwt/6.1.3/) to attempt to
> build/run it, but I'm guessing that the issue would hold for any widget
> that is embedded into a QTableWidget's cell?
> I'm using:
>   Qt 5.9.1
>   Qwt 6.1.3
>   Windows 7, 64 bit
> Sean
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