Widget color gradient

AndrzejB

Standard Calculator example has nice color gradient, whereas my application using class derived from QWidget and Button derived from QToolButton is flat and has not gradients.
I don't see any piece code in Calculator sample where is set gradient.

mpergand

Depends of your OS and the Qt Theme used.

AndrzejB

OS is the same, I don't see theme settings in *.cpp files of Calculator.
Main difference: Calculator is compiled by Qt Creator, and have .pro my application by CLion a have cmake.

mpergand

@AndrzejB
What OS are you talking about ?
Post a screenshot.

AndrzejB

I have Mint 21 Cinamon
Qt sample
button color change from light to dark
My trial
(whole screenshots)

mpergand

Looks OK here on KDE with Fusion theme.
qDebug()<<QStyleFactory::keys();
qDebug()<<qApp->style()->objectName();

("Windows", "Fusion")
"fusion"

What's your default theme ?
Have you applied any style sheet somewhere.

AndrzejB

@mpergand said in Widget color gradient:

qDebug()<<QStyleFactory::keys();
qDebug()<<qApp->style()->objectName();

Thanks,
Calculator example :

("Windows", "Fusion")
"fusion"

My application:

("cleanlooks", "gtk2", "cde", "motif", "plastique", "qt5ct-style", "Windows", "Fusion")
"qt5ct-style"

I change style:

qApp->setStyle("Fusion");

and is OK
what if style Fusion will not available?