Mostly complete from the Python original

src/window.h

@@ -0,0 +1,19 @@
+#ifndef WINDOW_H
+#define WINDOW_H
+
+#include <QMainWindow>
+
+class Canvas;
+
+class Window : public QMainWindow
+{
+    Q_OBJECT
+public:
+    explicit Window(QWidget* parent=0);
+    void load_stl(const QString& filename);
+
+private:
+    Canvas* canvas;
+};
+
+#endif // WINDOW_H