introduce Qt with minimal gui application

CMakeLists.txt

@@ -7,6 +7,59 @@ project("Info3_Praktikum" C CXX)
 set(CMAKE_C_STANDARD 17)
 set(CMAKE_CXX_STANDARD 20)
 
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+
+find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
+find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
+
+set(PROJECT_SOURCES
+        src/ControlDeveloper.cpp
+        src/mainwindow.cpp
+        src/mainwindow.h
+)
+
+if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
+    qt_add_executable(ControlDeveloper
+        MANUAL_FINALIZATION
+        ${PROJECT_SOURCES}
+    )
+# Define target properties for Android with Qt 6 as:
+#    set_property(TARGET Text2Console APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
+#                 ${CMAKE_CURRENT_SOURCE_DIR}/android)
+# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation
+else()
+    if(ANDROID)
+        add_library(ControlDeveloper SHARED
+            ${PROJECT_SOURCES}
+        )
+# Define properties for Android with Qt 5 after find_package() calls as:
+#    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
+    else()
+        add_executable(ControlDeveloper
+            ${PROJECT_SOURCES}
+        )
+    endif()
+endif()
+
+target_link_libraries(ControlDeveloper PRIVATE Qt${QT_VERSION_MAJOR}::Widgets)
+
+set_target_properties(ControlDeveloper 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
+)
+
+if(QT_VERSION_MAJOR EQUAL 6)
+    qt_finalize_executable(ControlDeveloper)
+endif()
+
 
 add_executable("Test_Command_List"
 src/testCommandList.cpp 

src/ControlDeveloper.cpp

+#include <QApplication>
+#include "mainwindow.h"
+
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    MainWindow w;
+    w.show();
+    return a.exec();
+}
\ No newline at end of file

src/mainwindow.cpp

+#include <QPushButton>
+#include <QLineEdit>
+#include <QBoxLayout>
+
+#include "mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+{
+//general
+    setWindowTitle("ControlDeveloper");
+}
+
+MainWindow::~MainWindow()
+{
+}
+

src/mainwindow.h

+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+private:
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+    ~MainWindow();
+
+};
+#endif // MAINWINDOW_H