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Day1-IntroductionGUIFrameworks/HelloWorlds/qml_helloworld/qml_hello/.gitignore

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+# This file is used to ignore files which are generated
+# ----------------------------------------------------------------------------
+
+*~
+*.autosave
+*.a
+*.core
+*.moc
+*.o
+*.obj
+*.orig
+*.rej
+*.so
+*.so.*
+*_pch.h.cpp
+*_resource.rc
+*.qm
+.#*
+*.*#
+core
+!core/
+tags
+.DS_Store
+.directory
+*.debug
+Makefile*
+*.prl
+*.app
+moc_*.cpp
+ui_*.h
+qrc_*.cpp
+Thumbs.db
+*.res
+*.rc
+/.qmake.cache
+/.qmake.stash
+
+# qtcreator generated files
+*.pro.user*
+
+# xemacs temporary files
+*.flc
+
+# Vim temporary files
+.*.swp
+
+# Visual Studio generated files
+*.ib_pdb_index
+*.idb
+*.ilk
+*.pdb
+*.sln
+*.suo
+*.vcproj
+*vcproj.*.*.user
+*.ncb
+*.sdf
+*.opensdf
+*.vcxproj
+*vcxproj.*
+
+# MinGW generated files
+*.Debug
+*.Release
+
+# Python byte code
+*.pyc
+
+# Binaries
+# --------
+*.dll
+*.exe
+

Day1-IntroductionGUIFrameworks/HelloWorlds/qml_helloworld/qml_hello/countermanager.cpp

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+#include "countermanager.h"
+
+CounterManager::CounterManager(QObject *parent)
+    : QObject{parent}
+{
+    m_counter = 0;
+}

Day1-IntroductionGUIFrameworks/HelloWorlds/qml_helloworld/qml_hello/countermanager.h

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+#ifndef COUNTERMANAGER_H
+#define COUNTERMANAGER_H
+
+#include <QObject>
+
+class CounterManager : public QObject
+{
+    Q_OBJECT
+public:
+    explicit CounterManager(QObject *parent = nullptr);
+
+
+signals:
+
+
+protected:
+private:
+    int m_counter;
+};
+
+#endif // COUNTERMANAGER_H

Day1-IntroductionGUIFrameworks/HelloWorlds/qml_helloworld/qml_hello/main.cpp

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+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+#include <QQmlContext>
+
+#include "countermanager.h"
+int main(int argc, char *argv[])
+{
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    auto counterManager = new  CounterManager();
+    engine.rootContext()->setContextProperty("_counterManager", counterManager);
+    const QUrl url(QStringLiteral("qrc:/main.qml"));
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
+        &app, [url](QObject *obj, const QUrl &objUrl) {
+            if (!obj && url == objUrl)
+                QCoreApplication::exit(-1);
+        }, Qt::QueuedConnection);
+    engine.load(url);
+
+    return app.exec();
+}

Day1-IntroductionGUIFrameworks/HelloWorlds/qml_helloworld/qml_hello/main.qml

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+import QtQuick 2.15
+import QtQuick.Window 2.15
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Hello World")
+
+    Text {
+        text: "Counter is " + _counterManager.counter;
+        anchors.centerIn: parent
+        MouseArea{
+            anchors.fill: parent
+            onClicked: {_counterManager.increase()}
+        }
+    }
+}

Day1-IntroductionGUIFrameworks/HelloWorlds/qml_helloworld/qml_hello/qml.qrc

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+<RCC>
+    <qresource prefix="/">
+        <file>main.qml</file>
+    </qresource>
+</RCC>

Day1-IntroductionGUIFrameworks/HelloWorlds/qml_helloworld/qml_hello/qml_hello.pro

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+QT += quick
+
+# You can make your code fail to compile if it uses deprecated APIs.
+# In order to do so, uncomment the following line.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+SOURCES += \
+        countermanager.cpp \
+        main.cpp
+
+RESOURCES += qml.qrc
+
+# Additional import path used to resolve QML modules in Qt Creator's code model
+QML_IMPORT_PATH =
+
+# Additional import path used to resolve QML modules just for Qt Quick Designer
+QML_DESIGNER_IMPORT_PATH =
+
+# Default rules for deployment.
+qnx: target.path = /tmp/$${TARGET}/bin
+else: unix:!android: target.path = /opt/$${TARGET}/bin
+!isEmpty(target.path): INSTALLS += target
+
+HEADERS += \
+    countermanager.h