diff --git a/src/main.cpp b/src/main.cpp
index cac0a0c..ce48296 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,21 +5,36 @@
 class MyWindow : public Gtk::Window {
 public:
   MyWindow();
+  virtual ~MyWindow();
+
+public:
+  Gtk::Button button;
+  void startCapture();
 };
 
 MyWindow::MyWindow() {
   set_title("Basic application");
 
-  Gtk::Button button("Hello World");
-  button.signal_clicked().connect([] { std::cout << "Hello World\n"; });
-  button.set_label("Hello World");
+  Gtk::Button button("start capture");
+
+  button.signal_clicked().connect(sigc::mem_fun(*this, &MyWindow::startCapture));
 
   set_default_size(800, 450);
 
   set_child(button);
 }
 
+MyWindow::~MyWindow() {}
+
+void MyWindow::startCapture() {
+  std::cout << "start capture" << std::endl;
+
+
+}
+
+
 int main(int argc, char **argv) {
   auto app = Gtk::Application::create("org.gtkmm.examples.base");
+
   return app->make_window_and_run<MyWindow>(argc, argv);
 }