QButton color changing in Qt 4.8 on Raspberry
Hi to everyone,
I have an issue with changing the color of a QPushButton. I have to change the color, of a pushbutton to green in certain conditions.
I got the code working on Qt 4.8.6 on a Debian machine, but the same code (listed below) doesn't behave at the same manner on a Raspberry Pi.
QPalette PHighlighted = palette();
PHighlighted.setColor(QPalette::Button, QColor(Qt::green));
ui->Btn->setPalette(PHighlighted);
In the first case all the button becomes green with a black text, but on the Raspberry only a small frame around the edges of the button changes to green (with small to none visible effect).
Any ideas?
Thanks in advance
P.S. I use Qt 4.8.6 with QtCreator 3.2.1 if it is helpful.
Re: QButton color changing in Qt 4.8 on Raspberry
Could be that the style on the RPi is using a different color role or you need to setAutoFillBackground(true) on the button.
Cheers,
_
Re: QButton color changing in Qt 4.8 on Raspberry
Thanks for the fast reply!
I tried inserting the line
ui->Btn->setAutoFillBackground(true);
at the class initialization and before each palette change that I had to make, but with no result. I also tried with using the Role option with all Active, Inactive and Disabled.
The state of things didn't change: when the palette change is requested, only the frame changes its color.
I checked at this point if it could be a library issue and updated the existing ones. I do not get a library error message during execution, so I assumed that no graphic library is missing.
Thanks again a lot!
Re: QButton color changing in Qt 4.8 on Raspberry
You could try starting with a different widget style, so check if the style does things differently.
E.g.
application -style windows
Cheers,
_
2 Attachment(s)
Re: QButton color changing in Qt 4.8 on Raspberry
I just tried your solution.
It seems to be working as the button now turns green when I want.
The problem with this is that the shape of all the widget is changed and doesn't have rounded angles anymore.
Attachment 12097
Attachment 12098
I will keep this as a temporary solution as it is working, but will try also with other ways.
Thanks for all the help!
Re: QButton color changing in Qt 4.8 on Raspberry
You could check which style is normally loaded and try a different style.
You could also try setting a style sheet instead of the palette or using a proxy style to draw just the button differently.
Cheers,
_