How to add class member function in QScriptEngine



  • I need to add class member function in QScriptEngine.
    How to do this correctly?

    .h file
    @class MainWindow : public QMainWindow
    {
    Q_OBJECT
    private:
    QScriptEngine scriptEngine;

      void setupFirst();
    

    public:
    QScriptValue appendDevice(QScriptContext *ctx, QScriptEngine *eng);
    };@

    .cpp file
    @void MainWindow::setupFirst() {

    this->scriptEngine.globalObject().setProperty("appendDevice",
    this->scriptEngine.newFunction(
    boost::bind(&MainWindow::appendDevice, this, _1, _2),
    3)
    ); // How to do this correctly?
    }

    QScriptValue MainWindow::appendDevice(QScriptContext *ctx, QScriptEngine *eng){

    QString functionDescription = tr("Function format ") + "bool appendDevice(QString name, int address, const QString portName," +
            "const int rate = 115200," +
            "const QString config = \"\");";
    if (ctx->argumentCount() < 3){
        return ctx->throwError(QScriptContext::SyntaxError, tr("Unsufficient args count. ") + functionDescription);
    }
    QString name;
    int address;
    QString portName;
    if (ctx->argumentCount() >= 3){
        if (ctx->argument(0).isString()) {
            name = ctx->argument(0).toString();
        }
        else {
            return ctx->throwError(QScriptContext::TypeError, tr("Arg [0] (Device name) must be a string. ") + functionDescription);
        }
    
        if (ctx->argument(1).isNumber()) {
            address = ctx->argument(1).toInt32();
        }
        else {
            throw ctx->throwError(QScriptContext::TypeError, tr("Arg [1] (Device address) must be a number. ") + functionDescription);
        }
    
        if (ctx->argument(2).isString()) {
            portName = ctx->argument(2).toString();
        }
        else {
            throw ctx->throwError(QScriptContext::TypeError, tr("Arg [2] (Device port) must be a string. ") + functionDescription);
        }
    }
    int rate  = QExtSerialPortAux::rateToInt(QExtSerialPortAux::defaultRate);
    QString config;
    
    if (ctx->argumentCount() >= 4){
        if (ctx->argument(3).isNumber()) {
            rate = ctx->argument(3).toInt32();
        }
        else {
            throw ctx->throwError(QScriptContext::TypeError, tr("Arg [3] (Port baud rate) must be a number. ") + functionDescription);
        }
    }
    if (ctx->argumentCount() >= 5){
        if (ctx->argument(4).isString()) {
            config = ctx->argument(4).toString();
        }
        else {
            throw ctx->throwError(QScriptContext::TypeError, tr("Arg [4] (Device config) must be a string. ") + functionDescription);
        }
    }
    
    return appendDeviceFromScript(name, address, portName, rate, config);
    

    }
    @

    Thank you for your replies.



  • MainWindow::appendDevice should be static function, then you can do what.


Log in to reply
 

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.