setup main window

CMakeLists.txt

@@ -13,7 +13,18 @@ find_package(Qt6 REQUIRED COMPONENTS
 
 qt_standard_project_setup()
 
-qt_add_executable(adhd main.cpp)
+qt_add_executable(adhd main.cpp mainwindow.cpp)
+
+# 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(adhd PROPERTIES
+        #    MACOSX_BUNDLE_GUI_IDENTIFIER com.example.adhd
+        MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+        MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+        MACOSX_BUNDLE TRUE
+        WIN32_EXECUTABLE $<NOT:$<CONFIG:Debug>>
+)
 
 target_link_libraries(adhd
   PRIVATE

main.cpp

@@ -1,6 +1,15 @@
 #include <iostream>
+#include <QApplication>
+#include "mainwindow.h"
 
-int main(int argc, char *args[]) {
+int main(int argc, char *argv[]) {
   std::cout << "Starting adhd program" << std::endl;
-  return 0;
+
+  QApplication a(argc, argv);
+  a.setStyle("fusion");
+
+  MainWindow w;
+  w.show();
+
+  return a.exec();
 }

mainwindow.cpp

@@ -0,0 +1,13 @@
+#include "mainwindow.h"
+#include <QLabel>
+
+MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
+{
+  QWidget *centralWidget = new QWidget(this);
+  QLabel *label = new QLabel(centralWidget);
+  label->setText("Let's get some stuff done!");
+
+  setCentralWidget(centralWidget);
+}
+
+MainWindow::~MainWindow() {}

mainwindow.h

@@ -0,0 +1,18 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QObject>
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow {
+  Q_OBJECT
+
+public:
+  MainWindow(QWidget *parent = nullptr);
+  ~MainWindow();
+};
+
+#endif // MAINWINDOW_H