diff --git a/README.md b/README.md
index 4230147..0ccb3be 100644
--- a/README.md
+++ b/README.md
@@ -15,5 +15,9 @@ Features:
 Building:
 1. sudo apt-get install cmake
 2. sudo apt-get install libssl-dev libavahi-compat-libdnssd-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-libav libglib2.0-dev libgtk2.0-dev build-essential libgtk-3-dev
-3. sudo apt-get install gstreamer1.0-vaapi (For Intel graphics)
+3. sudo apt-get install gstreamer1.0-vaapi (For Intel graphics) (If you get Problems like a green screen. Remove this package! It worked for me.)
 4. sh install.sh
+
+GTK+ Features:
+1. Double click switches between fullscreen mode and normal window.
+2. Escape key ends fullscreen mode.
\ No newline at end of file
diff --git a/airplayServer.cpp b/airplayServer.cpp
index dad66cd..e88297e 100755
--- a/airplayServer.cpp
+++ b/airplayServer.cpp
@@ -35,6 +35,7 @@
 
 #include <gst/video/videooverlay.h>
 #include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
 
 #ifdef GDK_WINDOWING_X11
 #include <gdk/gdkx.h>  // for GDK_WINDOW_XID
@@ -171,7 +172,7 @@ void configure_callback(GtkWindow *window, GdkEvent *event, gpointer data) {
 }
 
 
-static bool click_callback(GtkWindow *window, GdkEventButton *event, gpointer data) {
+static gboolean click_callback(GtkWindow *window, GdkEventButton *event, gpointer data) {
 
 
     if (event->button == 1 && event->type == GDK_2BUTTON_PRESS) {
@@ -185,9 +186,16 @@ static bool click_callback(GtkWindow *window, GdkEventButton *event, gpointer da
             GTK_data->is_fullscreen = true;
         }
     }
+    return true;
 
+}
 
+static gboolean on_key_press (GtkWidget *widget, GdkEventKey *event, gpointer user_data) {
 
+    if(event->keyval == GDK_KEY_Escape && GTK_data->is_fullscreen) {
+        gtk_window_unfullscreen((GtkWindow*)GTK_data->app_window);
+        GTK_data->is_fullscreen = false;
+    }
 
 }
 
@@ -262,6 +270,7 @@ int main(int argc, char *argv[]) {
     gtk_widget_realize (GTK_data->app_window);
     g_signal_connect (G_OBJECT (GTK_data->video_window), "draw",G_CALLBACK (draw_callback), NULL);
     g_signal_connect (G_OBJECT (GTK_data->app_window), "button-press-event" ,G_CALLBACK (click_callback), NULL);
+    g_signal_connect (G_OBJECT (GTK_data->app_window), "key_press_event", G_CALLBACK (on_key_press), NULL);
     g_signal_connect(G_OBJECT(GTK_data->app_window), "configure-event", G_CALLBACK(configure_callback), NULL);
 
     GTK_data->video_window_xwindow = gtk_widget_get_window (GTK_data->video_window);