小编Ara*_*vor的帖子

我只是想将cpp信号连接到qml插槽并尝试不同的方式,但它总是在运行时导致相同的QML-Error:无法分配给不存在的属性"onProcessed"!为什么？

这是我的Cpp对象:

#include <QObject>

class ImageProcessor : public QObject
{
    Q_OBJECT
public:
    explicit ImageProcessor(QObject *parent = 0);

signals:
    void Processed(const QString str);
public slots:
    void processImage(const QString& image);
};

ImageProcessor::ImageProcessor(QObject *parent) :
    QObject(parent)
{
}

void ImageProcessor::processImage(const QString &path)
{
    Processed("test");
}

这是我的main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QtQml>

#include "imageprocessor.h"

int main(int argc, char *argv[])
{
    qmlRegisterType<ImageProcessor>("ImageProcessor", 1, 0, "ImageProcessor");

    QGuiApplication app(argc, argv);
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:///main.qml")));

    return app.exec();
}

这是我的QML文件

import QtQuick 2.2
import QtQuick.Window 2.1
import …