start qt project

ui/.gitignore

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+build/
+.qtcreator/

ui/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+
+project(llink VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 REQUIRED COMPONENTS Quick)
+
+qt_standard_project_setup(REQUIRES 6.8)
+
+qt_add_executable(appllink
+    main.cpp
+)
+
+qt_add_qml_module(appllink
+    URI llink
+    QML_FILES
+        Main.qml
+)
+
+# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
+# If you are developing for iOS or macOS you should consider setting an
+# explicit, fixed bundle identifier manually though.
+set_target_properties(appllink PROPERTIES
+#    MACOSX_BUNDLE_GUI_IDENTIFIER com.example.appllink
+    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(appllink
+    PRIVATE Qt6::Quick
+)
+
+include(GNUInstallDirs)
+install(TARGETS appllink
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

ui/Main.qml

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+import QtQuick
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    title: qsTr("Hello World")
+}

ui/main.cpp

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+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+int main(int argc, char *argv[])
+{
+    qDebug() << "Hello world";
+
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine;
+    QObject::connect(
+        &engine,
+        &QQmlApplicationEngine::objectCreationFailed,
+        &app,
+        []() { QCoreApplication::exit(-1); },
+        Qt::QueuedConnection);
+    engine.loadFromModule("llink", "Main");
+
+    return app.exec();
+}