setStylesheet = Qss file

[Kris Revi]

    QFile file(":/theme/dark.qss");
    file.open(QFile::ReadOnly);
    QString styleSheet = QLatin1String(file.readAll());
    a.setStyleSheet(styleSheet);

gives me

QIODevice::read (QFile, ":\theme\dark.qss"): device not open

w0000t....

[JonB]

@Kris-Revi
QFile::open() returns a bool so you can test whether it has succeeded or not. Clearly it has not here.

[Kris Revi]

@JonB so i added this

    QFile ssf(":/theme/dark.qss");

    if( ssf.exists() )
    {
        qDebug() << "Stylesheet does exists";
    }
    if( ssf.open(QFile::ReadOnly) )
    {
        qDebug() << "File is opened for read!";
    }

    QString styleSheet = QLatin1String(ssf.readAll());
    a.setStyleSheet(styleSheet);

but none of them prints :/

[eyllanesc]

@Kris-Revi So that file doesn't exist. Show the .pro and .qrc

[Kris Revi]

@eyllanesc

EDIT:

i just ran qmake and now it fixed itself...