Hello:
I have a test qmlRegisterSingletonType project as listed below.
The singleton Q_INVOKABLE functions are somehow not visible or in "scope".
Anybody have ideas about this?
##### sing.h
#include <QObject>
#include <QtQml>
#include <QString>
#include <QDebug>
class Sing : public QObject
{
Q_OBJECT
public:
explicit Sing(QObject *gparent = 0) { Q_UNUSED(gparent) }
~Sing() { }
Q_INVOKABLE int Buttonpress(QObject* gparm)
{
qDebug() << "ButtonPress:" << gparm ;
return 22 ;
}
Q_INVOKABLE QString Getcolor(QObject* gparm)
{
qDebug() << "GetColor:" << gparm ;
return "red" ;
}
public slots:
signals:
};
###### main.cpp
#include <QApplication>#include <QQmlApplicationEngine>#include <QQmlEngine>
#include "sing.h"
static QObject *singprovider(QQmlEngine *gengine, QJSEngine
*gscriptEngine){ Q_UNUSED(gengine) Q_UNUSED(gscriptEngine)
Sing* gsing = new Sing(); return gsing;}
int main(int argc, char *argv[]){ QApplication app(argc, argv);
QQmlApplicationEngine engine;
int gres = qmlRegisterSingletonType<Sing>("Singapi", 1, 0, "Sing",
singprovider);
qDebug() << "Register Singleton:" << gres ;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
return app.exec();}
###### main.qml
import QtQuick 2.4import QtQuick.Controls 1.3import QtQuick.Window
2.2import QtQuick.Layouts 1.1import Singapi 1.0 as Sing
Window {
width: Screen.width height: Screen.height visible: true
ColumnLayout { anchors.centerIn: parent
Button { id: gbutton text: qsTr("Press
Me 1") onClicked: {
Sing.Buttonpress(gbutton) ; } }
TextInput { id: ginput text: qsTr("Press
Me 2") color: Sing.Getcolor(ginput) } }
}
###### Application Output on Run and button Press:
Debugging starts
QML debugging is enabled. Only use this in a safe environment.
QML Debugger: Waiting for connection on port 49970...
Register Singleton: 10
qrc:/main.qml:30: TypeError: Property 'Getcolor' of object [object Object]
is not a function
qrc:/main.qml:23: TypeError: Property 'Buttonpress' of object [object
Object] is not a function
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