Hi guys, I am trying to write a small media player using GTK+ and GStreamer and currently using the XOverlay Interface to embed the video in a GtkDrawing Area INSIDE the mainwindow. The program was compiled using this command: g++ /home/phongcao/cacao.cc -o /home/phongcao/cacao `pkg-config --cflags --libs gtk+-2.0 gstreamer-0.10 gstreamer-plugins-base-0.10 gstreamer-interfaces-0.10` However, after compiling the program, I got this error: /home/phongcao/cacao.cc:61: error: ‘gst_x_overlay_set_window_handle’ was not declared in this scope I wonder if this is GStreamer's error or my fault when writing this program. I have attached the source code of the program with this message. If possible I hope you guys can check the code out and tell me the errors, since I am pretty new to GStreamer and not sure how to use the XOverlay Interface correctly.<img src="http://n4.nabble.com/images/smiley/smiley_unhappy.gif"> Thank you for helping me with this problem! I have spent almost 3 days scratching over my head for this. Please tell me if you need any additional information... Thank you!!