"WARNING: Cannot find style "test" - fallback: "default" "

morita

Hello.

I curently have a problem about a way to use "Adding custom styles" of the "Virtual Keyboard".
The error is "WARNING: Cannot find style "test" - fallback: "default" "

I want to try to add custom styles to my project like :

https://doc.qt.io/qt-5/technical-guide.html#keyboard-styles

After reading the article, I tried to add custom styles including folder "test".

And for my setting , I searched on the net and used below:
https://forum.qt.io/topic/93279/how-to-custom-qml-virtual-keyboard/2

Below is the most important points I checked in above the article.
1.set the QT_VIRTUALKEYBOARD_STYLE to STYLENAME
2.put the style.qml into your existing qrc (e.g. to the path :/kbstyles/test.qml :/kbstyles/QtQuick/VirtualKeyboard/Styles/STYLENAME/style.qml)
3.add the import path to your QQmlEngine (engine->addImportPath(":/kbstyles"))

But I had below the error.
WARNING: Cannot find style "test" - fallback: "default"

I do not know why I have the error. I guess I could correctly set above three rules.

An below image is my source code.

Could you tell me what is wrong ?

JR_Techno

Same problem.

Rajeesh_Raveendran

@JR_Techno got any solution? I have the same issue

Elthik

Hello.
I encountered the same problem, found a solution.
It's all about "qrc:/qt/qml". The search for the path "QtQuick/VirtualKeyboard/Styles" starts from there.
Accordingly, if you created a resource file not in the root of the application, then you need to add the prefix "/qt/qml/" in the resource file to the directory to your keyboard style.
Final structure (using my example):

Main.cpp:

int main(int argc, char *argv[])
{
    qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));
    qputenv("QT_VIRTUALKEYBOARD_STYLE", QByteArray("MXTS")); //Just style name, but before create QML engine!
J
    QApplication app(argc, argv);

    ModelStorage* model = ModelStorage::instance();

    QQmlApplicationEngine engine;

    qDebug() << engine.importPathList(); // for exmaple: QList("C:/git/Torque_sub/TorqueSub/build/Desktop_Qt_6_8_2_MSVC2022_64bit-Debug", "qrc:/qt-project.org/imports", !!!!!"qrc:/qt/qml"!!!!!, "C:/Qt/6.8.2/msvc2022_64/qml")

Style.qml:

......
keyboardBackground: Rectangle {
        color: "red"
    }
......

Results:

Ref. from src virtual keyboard qt git src:

QString stylePath(const QString &name) const
    {
        if (name.isEmpty())
            return QString();

        QStringList stylePathList;
        stylePathList << QLatin1String("qrc:/qt-project.org/imports/QtQuick/VirtualKeyboard/Styles/Builtin/"); //###### default styles
        const QStringList importPathList = qmlImportPathList(); //###### get import paths lists
        // Add QML import path (Note: the QML base dir is usually the last entry in the list)
        for (int i = importPathList.size() - 1; i >= 0; --i) {
            const QString stylesPath = importPathList.at(i)
                + QLatin1String("/QtQuick/VirtualKeyboard/Styles/");  //###### added, so path must:  qrc:/qt/qml/QtQuick/VirtualKeyboard/Styles
            stylePathList += stylesPath;
        }

        // Path for backwards compatibility
        stylePathList << QLatin1String("qrc:/QtQuick/VirtualKeyboard/content/styles/");

        for (const QString &stylePath : std::as_const(stylePathList)) {
            QString filePath = buildStyleFilePath(stylePath, name);
            bool pathExist = false;
            pathExist = QFileInfo::exists(filePath);
            if (pathExist)
                return buildStylePath(stylePath, name);
        }
        return QString();
    }

Hopefully this will save someone an hour.