diff --git a/posctl.cc b/posctl.cc
new file mode 100644
index 0000000..514b4de
--- /dev/null
+++ b/posctl.cc
@@ -0,0 +1,29 @@
+/***************************************************************************************
+ *
+ * posctl.cc is part of SimpleSkyCam.
+ *
+ *****************************************************************************************/
+
+#include <list>
+#include <string>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "gui.h"
+#include "filter.h"
+#include "detect.h"
+#include "configuration.h"
+#include "video.h"
+#include "videodev.h"
+#include "histogram.h"
+
+extern GtkBuilder *_builder_;			// work around for threads
+
+void cb_posctl_show_window (GtkWidget *widget, gpointer data) {
+	printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
+
+	GtkWidget *wnd = GTK_WIDGET(gtk_builder_get_object (GTK_BUILDER(_builder_), "window-posctl"));
+	gtk_widget_show(wnd);
+}
+
+