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Qt6QMLBeginnersCode/4.SignalsSlots/1-SignalHandlers/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(1-SignalHandlers VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app1-SignalHandlers
+    main.cpp
+)
+
+qt_add_qml_module(app1-SignalHandlers
+    URI 1-SignalHandlers
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app1-SignalHandlers PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app1-SignalHandlers
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app1-SignalHandlers
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/1-SignalHandlers/Main.qml

@@ -0,0 +1,43 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Signal Handlers")
+
+    Rectangle {
+        id: rect
+        width: 150
+        height: 150
+        color: "red"
+
+        MouseArea {
+            anchors.fill: parent
+            //hoverEnabled: true
+
+            onClicked: {
+                console.log("Clicked on the rect")
+            }
+
+            onDoubleClicked: {
+                console.log("Double clicked on the rect")
+            }
+
+            onEntered: {
+                console.log("You're in!")
+            }
+
+            onExited: {
+                console.log("You're out!")
+            }
+
+            onWheel: function(wheel) {
+                console.log("Wheel: " + wheel.x)
+            }
+        }
+    }
+}

Qt6QMLBeginnersCode/4.SignalsSlots/1-SignalHandlers/main.cpp

@@ -0,0 +1,18 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("1-SignalHandlers", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/10-MultipleSignalParameters/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(10-MultipleSignalParameters VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app10-MultipleSignalParameters
+    main.cpp
+)
+
+qt_add_qml_module(app10-MultipleSignalParameters
+    URI 10-MultipleSignalParameters
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app10-MultipleSignalParameters PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app10-MultipleSignalParameters
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app10-MultipleSignalParameters
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/10-MultipleSignalParameters/Main.qml

@@ -0,0 +1,56 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Multiple Signal Parameters")
+
+    signal info(string last_name,string first_name,int age)
+
+    //Handle all three parameters
+    onInfo: function(l,f,a){
+        print("last name: " + l + ", first name: " + f +", age: "+ a)
+    }
+
+    //Only handle the first two
+    /*
+    onInfo: function(l,f){
+        print("last name: " + l + ", first name: " + f)
+    }
+    */
+    //Only handle the first one
+    /*
+    onInfo: function(l){
+        print("last name: " +l)
+    }
+    */
+    //Can only omit trailling parameters. Can't only ignore last name
+    /*
+    onInfo: function(f,a){
+        print(" first name: " + f +", age: "+ a)
+    }
+    */
+    //Non trailling parameters can be ignored through some hack
+    /*
+    onInfo: function(_,f,a){
+        print(" first name: " + f +", age: "+ a)
+    }
+    */
+    Rectangle{
+        id: rectId
+        width: 300;
+        height: 300
+        color: "blue"
+
+        MouseArea{
+            anchors.fill: parent
+            onClicked: {
+                info("John", "Snow", 33)
+            }
+        }
+    }
+}

Qt6QMLBeginnersCode/4.SignalsSlots/10-MultipleSignalParameters/main.cpp

@@ -0,0 +1,19 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("10-MultipleSignalParameters", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/2-SignalParameters/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(2-SignalParameters VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app2-SignalParameters
+    main.cpp
+)
+
+qt_add_qml_module(app2-SignalParameters
+    URI 2-SignalParameters
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app2-SignalParameters PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app2-SignalParameters
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app2-SignalParameters
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/2-SignalParameters/Main.qml

@@ -0,0 +1,40 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Signal Parameters")
+
+    Rectangle{
+        id: rect
+        width: 150
+        height: 150
+        color: "red"
+
+        MouseArea{
+            anchors.fill: parent
+
+            /*
+            onClicked: {
+                //Deprecated
+                console.log(mouse.x)
+            }
+            */
+
+            //Explicit Javascript function
+            /*
+            onClicked: function(mouse_param){
+                console.log(mouse_param.x)
+            }
+            */
+
+             //Arrow function
+             onClicked: (mouse_param) => console.log(mouse_param.x)
+
+        }
+    }
+}

Qt6QMLBeginnersCode/4.SignalsSlots/2-SignalParameters/main.cpp

@@ -0,0 +1,18 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("2-SignalParameters", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/3-PropertChangeSignals/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(3-PropertChangeSignals VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app3-PropertChangeSignals
+    main.cpp
+)
+
+qt_add_qml_module(app3-PropertChangeSignals
+    URI 3-PropertChangeSignals
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app3-PropertChangeSignals PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app3-PropertChangeSignals
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app3-PropertChangeSignals
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/3-PropertChangeSignals/Main.qml

@@ -0,0 +1,47 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Property change handlers")
+
+    Rectangle {
+        id: rect
+        width: 300
+        height: width
+        color: "dodgerblue"
+
+        property string description: "A rectangle to play with"
+
+        onWidthChanged: function() {
+            console.log("Width changed to: " + rect.width)
+        }
+
+        onHeightChanged: function() {
+            console.log("Height changed to: " + rect.height)
+        }
+
+        onColorChanged: {
+
+        }
+
+        onVisibleChanged: {
+
+        }
+
+        onDescriptionChanged: {
+
+        }
+
+        MouseArea {
+            anchors.fill: parent
+            onClicked: {
+                rect.width = rect.width + 20
+            }
+        }
+    }
+}

Qt6QMLBeginnersCode/4.SignalsSlots/3-PropertChangeSignals/main.cpp

@@ -0,0 +1,18 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("3-PropertChangeSignals", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/4-Connections/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(4-Connections VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app4-Connections
+    main.cpp
+)
+
+qt_add_qml_module(app4-Connections
+    URI 4-Connections
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app4-Connections PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app4-Connections
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app4-Connections
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/4-Connections/Main.qml

@@ -0,0 +1,33 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+import QtQml
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Connections")
+
+    Rectangle{
+        id: rectId
+        width : 200
+        height: 200
+        color: "blue"
+
+        MouseArea{
+            id:mouseAreaId
+            anchors.fill: parent
+        }
+    }
+
+    Connections  {
+        target : mouseAreaId
+        function onClicked(){
+            console.log("Hello")
+        }
+        function onDoubleClicked(mouse){
+            console.log("Doubleclicked at: "+mouse.x)
+        }
+    }
+}

Qt6QMLBeginnersCode/4.SignalsSlots/4-Connections/main.cpp

@@ -0,0 +1,18 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("4-Connections", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/5-AttachedSignalHandlers/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(5-AttachedSignalHandlers VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app5-AttachedSignalHandlers
+    main.cpp
+)
+
+qt_add_qml_module(app5-AttachedSignalHandlers
+    URI 5-AttachedSignalHandlers
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app5-AttachedSignalHandlers PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app5-AttachedSignalHandlers
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app5-AttachedSignalHandlers
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/5-AttachedSignalHandlers/Main.qml

@@ -0,0 +1,22 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Attached signal handlers")
+
+    Rectangle{
+        width : 200
+        height: 200
+        color : "green"
+        anchors.left: parent.left
+
+        Component.onCompleted: {
+            console.log("Finished setting up the rectangle")
+        }
+    }
+}

Qt6QMLBeginnersCode/4.SignalsSlots/5-AttachedSignalHandlers/main.cpp

@@ -0,0 +1,19 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("5-AttachedSignalHandlers", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/6-CustomSignals/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(6-CustomSignals VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app6-CustomSignals
+    main.cpp
+)
+
+qt_add_qml_module(app6-CustomSignals
+    URI 6-CustomSignals
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app6-CustomSignals PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app6-CustomSignals
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app6-CustomSignals
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/6-CustomSignals/Main.qml

@@ -0,0 +1,36 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Custom Signals")
+
+    Rectangle{
+        id: rectId
+        width : 300
+        height: 300
+        color: "dodgerblue"
+
+        //Set up the signal
+        signal greet(string message)
+
+        //Once you set up the signal, Qt setup a signal handler automatically
+        onGreet: function(message){
+            console.log("Greeting with message: "+ message)
+        }
+
+        MouseArea{
+            anchors.fill: parent
+            onClicked: {
+                //Fire the signal by just calling it like a function
+                rectId.greet("The sky is blue")
+            }
+        }
+    }
+
+
+}

Qt6QMLBeginnersCode/4.SignalsSlots/6-CustomSignals/main.cpp

@@ -0,0 +1,18 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("6-CustomSignals", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/7-ConnectSignalToMethod/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(7-ConnectSignalToMethod VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app7-ConnectSignalToMethod
+    main.cpp
+)
+
+qt_add_qml_module(app7-ConnectSignalToMethod
+    URI 7-ConnectSignalToMethod
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app7-ConnectSignalToMethod PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app7-ConnectSignalToMethod
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app7-ConnectSignalToMethod
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/7-ConnectSignalToMethod/Main.qml

@@ -0,0 +1,47 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Connect Signal to Method")
+
+    Rectangle{
+        id: rectId
+        width: 300
+        height: 300
+        color: "dodgerblue"
+
+        //Set up the signal
+        signal greet(string message)
+
+        //WE DON'T WANT TO USE THIS THIS TIME.
+        // Once you set up the signal, Qt setup a signal handler automatically
+        /*
+        onGreet: function(message){
+            console.log("Greeting with message: "+ message)
+        }
+        */
+
+        //We want to connect, not to a built in signal handler, but to a custom
+        //regular function
+        function respond_your_way(message){
+            console.log("Responding our way; greeting with message: "+ message)
+        }
+
+        MouseArea{
+            anchors.fill: parent
+            onClicked: {
+                //Fire the signal by just calling it like a function
+                rectId.greet("The sky is blue")
+            }
+        }
+        Component.onCompleted: {
+            //Make the connection explicitly
+            rectId.greet.connect(rectId.respond_your_way)
+        }
+    }
+}

Qt6QMLBeginnersCode/4.SignalsSlots/7-ConnectSignalToMethod/main.cpp

@@ -0,0 +1,19 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("7-ConnectSignalToMethod", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/8-ConnectingSignalsToSignals/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(8-ConnectingSignalsToSignals VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app8-ConnectingSignalsToSignals
+    main.cpp
+)
+
+qt_add_qml_module(app8-ConnectingSignalsToSignals
+    URI 8-ConnectingSignalsToSignals
+    VERSION 1.0
+    QML_FILES Main.qml
+)
+
+set_target_properties(app8-ConnectingSignalsToSignals PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app8-ConnectingSignalsToSignals
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app8-ConnectingSignalsToSignals
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/8-ConnectingSignalsToSignals/Main.qml

@@ -0,0 +1,45 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Custom Signals")
+
+    Rectangle{
+        id: rectId
+        width: 300
+        height: 300
+        color: "dodgerblue"
+        anchors.left: parent.left
+
+        //Set up the signal
+        signal greet(string message)
+        signal forward_greeting(string message)
+
+        //We want to connect, not to a build in signal handler, but to a custom
+        //regular function
+        function respond_your_way(message){
+            console.log("Responding our way;Greeting with message: "+message)
+        }
+
+        MouseArea{
+            anchors.fill: parent
+            onClicked: {
+                //Fire the signal by just calling it like a function
+                rectId.greet("The sky is blue")
+            }
+        }
+        Component.onCompleted: {
+            //Connect a signal to another signal
+            rectId.greet.connect(rectId.forward_greeting)
+            //Respond to the final signal
+            rectId.forward_greeting.connect(rectId.respond_your_way)
+        }
+
+
+    }
+}

Qt6QMLBeginnersCode/4.SignalsSlots/8-ConnectingSignalsToSignals/main.cpp

@@ -0,0 +1,19 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("8-ConnectingSignalsToSignals", "Main");
+
+    return app.exec();
+}

Qt6QMLBeginnersCode/4.SignalsSlots/9-DifferentQMLComponentSignals/CMakeLists.txt

@@ -0,0 +1,40 @@
+# Copyright (c) Daniel Gakwaya.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.16)
+
+project(9-DifferentQMLComponentSignals VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.5)
+
+qt_add_executable(app9-DifferentQMLComponentSignals
+    main.cpp
+)
+
+qt_add_qml_module(app9-DifferentQMLComponentSignals
+    URI 9-DifferentQMLComponentSignals
+    VERSION 1.0
+    QML_FILES Main.qml Notifier.qml Receiver.qml
+)
+
+set_target_properties(app9-DifferentQMLComponentSignals PROPERTIES
+    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    WIN32_EXECUTABLE TRUE
+)
+
+target_link_libraries(app9-DifferentQMLComponentSignals
+    PRIVATE Qt6::Quick
+)
+
+install(TARGETS app9-DifferentQMLComponentSignals
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Qt6QMLBeginnersCode/4.SignalsSlots/9-DifferentQMLComponentSignals/Main.qml

@@ -0,0 +1,29 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Window {
+    visible: true
+    width: 640
+    height: 480
+    title: qsTr("External Components with signals and slots")
+
+    Notifier{
+        id: notifierId
+        rectColor: "yellowgreen"
+        target: receiverId
+    }
+
+    Receiver {
+        id: receiverId
+        rectColor: "dodgerblue"
+        anchors.right: parent.right
+    }
+
+    /*
+    Component.onCompleted: {
+        notifierId.notify.connect(receiverId.receiveInfo)//Connect signal to slot
+    }
+    */
+}

Qt6QMLBeginnersCode/4.SignalsSlots/9-DifferentQMLComponentSignals/Notifier.qml

@@ -0,0 +1,54 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Item {
+
+    //Could have used an alias for rectColor here, but I just want you
+    //to see that you can also do it this way, and rely on the property handler
+    // to save the new color when applied.
+
+
+    width: notifierRectId.width
+    height: notifierRectId.height
+    property int count: 0
+    signal notify( string count)//Declare signal
+
+
+    property Receiver target: null
+    onTargetChanged: {
+        notify.connect(target.receiveInfo)
+    }
+
+    property color rectColor: "black"
+    onRectColorChanged: {
+        notifierRectId.color = rectColor
+    }
+
+
+
+    Rectangle {
+        id: notifierRectId
+        width: 200
+        height: 200
+        color: "red"
+
+
+        Text {
+            id: displayTextId
+            anchors.centerIn: parent
+            font.pointSize: 20
+            text: count
+        }
+
+        MouseArea{
+            anchors.fill: parent
+            onClicked: {
+                count++
+                notify(count)
+            }
+        }
+    }
+
+}

Qt6QMLBeginnersCode/4.SignalsSlots/9-DifferentQMLComponentSignals/Receiver.qml

@@ -0,0 +1,36 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+import QtQuick
+
+Item {
+
+    property alias rectColor: receiverRectId.color
+    width: receiverRectId.width
+    height: receiverRectId.height
+
+
+    function receiveInfo( count){
+        receiverDisplayTextId.text = count
+        console.log("Receiver received number: "+ count)
+    }
+
+
+
+
+    Rectangle {
+        id: receiverRectId
+        width: 200
+        height: 200
+        color: "blue"
+
+
+        Text {
+            id: receiverDisplayTextId
+            anchors.centerIn: parent
+            font.pointSize: 20
+            text: "0"
+        }
+    }
+
+}

Qt6QMLBeginnersCode/4.SignalsSlots/9-DifferentQMLComponentSignals/main.cpp

@@ -0,0 +1,19 @@
+// Copyright (c) Daniel Gakwaya.
+// SPDX-License-Identifier: MIT
+
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
+        &app, []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("9-DifferentQMLComponentSignals", "Main");
+
+    return app.exec();
+}