[cpp] Add catch and qt examples

cpp/qt/slots/slots-app.h

@@ -0,0 +1,34 @@
+/*##############################################################################
+## Author: Shaun Reed                                                         ##
+## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## About: MainWindow application for practice using signals and slots in Qt   ##
+##                                                                            ##
+## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
+################################################################################
+*/
+
+#ifndef KLIPS_SLOTSAPP_H
+#define KLIPS_SLOTSAPP_H
+
+#include <QDockWidget>
+#include <QMainWindow>
+#include <QPlainTextEdit>
+#include <QVBoxLayout>
+#include <QWidget>
+
+class SlotsApp : public QMainWindow {
+  Q_OBJECT
+
+public:
+  SlotsApp(QWidget *parent = nullptr);
+  ~SlotsApp() = default;
+
+public:
+signals:
+  void sendTest();
+
+public slots:
+  void test(){};
+};
+
+#endif // KLIPS_SLOTSAPP_H