Problem with importing self-developed component

Eugene Gromov

Hello! I am trying to develop my component for GPIO control and embed it in my Qt application using the code below:

#include <QDir>
#include <QGuiApplication>
#include <QQmlEngine>
#include <QQmlFileSelector>
#include <QQuickView> 
#include "GPIO1.h"
#include "GPIO1.cpp"
[#define DECLARATIVE_EXAMPLE_MAIN(NAME) int main(int argc, char* argv[]) \
{\
    QGuiApplication app(argc,argv);\
    app.setOrganizationName("QtProject");\
    app.setOrganizationDomain("qt-project.org");\
    app.setApplicationName(QFileInfo(app.applicationFilePath()).baseName());\
    QQuickView view;\
    if (qgetenv("QT_QUICK_CORE_PROFILE").toInt()) {\
        QSurfaceFormat f = view.format();\
        f.setProfile(QSurfaceFormat::CoreProfile);\
        f.setVersion(4, 4);\
        view.setFormat(f);\
    }\
    view.connect(view.engine(), SIGNAL(quit()), &app, SLOT(quit()));\
    new QQmlFileSelector(view.engine(), &view);\
    view.setSource(QUrl("qrc:///" #NAME ".qml")); \
    view.setResizeMode(QQuickView::SizeRootObjectToView);\
    qmlRegisterType<Message>("com.myself", 1, 0, "GPIO1");    
if (QGuiApplication::platformName() == QLatin1String("qnx") || \
          QGuiApplication::platformName() == QLatin1String("eglfs")) {\
        view.showFullScreen();\
    } else {\
        view.show();\
    }\
    return app.exec();\
}

The code of my component is in file gpio1.h:

#ifndef GPIO1_H
#define GPIO1_H
#include <QObject>
class GPIO1 : public QObject
{
    Q_OBJECT
public:
    explicit GPIO1(QObject *parent = 0) : QObject(parent){}
    Q_INVOKABLE int test(){
        return 1;
    }
signals:
public slots:
};
#endif // GPIO1_H

QML imports are:

import QtQuick 2.0
import QtQuick.Controls 1.3
import com.myself 1.0

Application compiles successfull, the QML editor recognises GPIO1 as an item. but when i run application, I'am having the error message:

"module com.myself is not installed"

I would appreciate any help.

p3c0

Hi @Eugene-Gromov,
You have registered the component after loading the QML file. It should be done before it.

Eugene Gromov

Thank you very much, @p3c0 problem solved now :)

p3c0

@Eugene-Gromov Congratulations :)
Also please use ``` (3 bacticks) for posting code blocks.

SGaist

Hi and welcome to devnet,

Out of curiosity: why are you including GPIO1.cpp in your main.cpp ?

Eugene Gromov

@SGaist, during development I replaced implementation to .h file, forgot to remove #include. Will knock my code into shape :)