Qt Widgets global stylesheet

Tikani

Does Qt allow to set stylesheets application-wide? It's very tedious to set them to each control by hand. It would be perfect if Qt allows to work with stylesheets like with an ordinary CSS - to write global selectors, make strict targeting with "id" attribute and so on.

mrjj

Yes !
And its also recommended to do so
as setting on each widget becomes a mess.
QApplication have method.
http://doc.qt.io/qt-5/qapplication.html#styleSheet-prop

and yes, it has selectors as ClassType, name etc

Tikani

@mrjj
Ok, I understood that.
Then I want to put a huge string literal that contains global stylesheet to project resources and pass it to the method you pointed above. Does Qt allow to move "hardcoded" strings to resources?

mrjj

@Tikani
Yes, you can easy load a text file/stylesheet from resources. just use the special ":/" syntax and it just works
Note that you must use QFile to load it.

mostefa

@Tikani said in Qt Widgets global stylesheet:

@mrjj
Ok, I understood that.
Then I want to put a huge string literal that contains global stylesheet to project resources and pass it to the method you pointed above. Does Qt allow to move "hardcoded" strings to resources?

I think that the best practise for qt stylesheet is to use a ressource file on the qt ressource file named stylesheet.qss for example,

You stylesheet.qss will contain this for example:

stylesheet.qss

QWidget
{
background-color: red;
}
QPushButton
{
color: yellow;
}
and then on your application you have to do something like this:

QFile File("stylesheet.qss");
File.open(QFile::ReadOnly);
QString StyleSheet = QLatin1String(File.readAll());

qApp->setStyleSheet(StyleSheet);

I hope this can help you !

Tikani

@mrjj, @mostefa
Big thanks to both of you, I got the point.
Marking as solved.

mrjj

Hi
And for fooling around and testing you can do also do

auto teststyle = R"(
               QWidget
               {
               background-color: red;
               }
               QPushButton
               {
               color: yellow;
               }
               )";

int main(int argc, char* argv[]) {
  QApplication a(argc, argv);
  a.setStyleSheet(teststyle);
  MainWindow w;
  w.show();
  return a.exec();
}
(c++ 11 compiler)

GeminiMan

If you want stylesheet ready for the use of qss in your application use this site:
https://qss-stock.devsecstudio.com