Qml font.weight not working?

[ecspertiza]

Font this is trouble of Qt, im use Qt 5.8.0

I need paint font "SF UI Display", in main.cpp im load font

void installFont() {
 
    QDir dir(":/font/");
    QStringList fontList;
    fontList << dir.entryList();
 
    for (int i = 0; i < fontList.count(); ++i) {
        int res = QFontDatabase::addApplicationFont(":/font/" + fontList.at(i));
 
        if (res == -1)
            qDebug() << Q_FUNC_INFO << "can`t add " << fontList.at(i);
    }
}

void installFont() {

    QDir dir(":/font/");
    QStringList fontList;
    fontList << dir.entryList();

    for (int i = 0; i < fontList.count(); ++i) {
        int res = QFontDatabase::addApplicationFont(":/font/" + fontList.at(i));

        if (res == -1)
            qDebug() << Q_FUNC_INFO << "can`t add " << fontList.at(i);
    }
}

To copy to clipboard, switch view to plain text mode 

in qml

Text {
            id: label1
            anchors.left: parent.left
            anchors.leftMargin: 100
            anchors.top: parent.top
            anchors.topMargin: 100
 
            text: "SF UI Display Light"
 
            font.family: "SF UI Display"
            font.pixelSize: 28
            font.weight: Font.Light
}

Text {
            id: label1
            anchors.left: parent.left
            anchors.leftMargin: 100
            anchors.top: parent.top
            anchors.topMargin: 100

            text: "SF UI Display Light"

            font.family: "SF UI Display"
            font.pixelSize: 28
            font.weight: Font.Light
}

To copy to clipboard, switch view to plain text mode 

but i see some other font, screen to qml, photoshop ->

https://joxi.ru/4zANB0SBwVOoA9

what im doing wrong ?

[anda_skoa]

Have you checked if QFontDatabase knows your font after you've added it?

Cheers,
_

[ecspertiza]

Font there is in QFontDatabase

in QWidget hawe some result http://joxi.ru/wRmzQXS0V3pOrO?d=1

Font "Helvetica Neue" have some problem

[ecspertiza]

On android, all font look is good. I`m can`t undrstand how this work on window. Standart application paint font is good, Qt use native render and can`t paint font.

[anda_skoa]

So it happens with both render modes?
Qt and Native?

Cheers,
_