--- Description of the GTK examples ---

- gtkxoverlay:
Show how to use the xoverlay interface through GTK.
It's possible to switch bettween GST_STATE through four buttons.

-filternoxoverlay:
A more complex pipeline is switched bettween the GST states
without using the xoverlay interface.

-filterxoverlay:
A more complex pipeline is switched bettween the GST states.
using the xoverlay interface.

-fxtest:
switch bettween effects of the gleffects filter.

-pixbufdrop:
drag and drop a png file and overlay it using alpha channel.
It uses gloverlay filter.

-switchxoverlay:
change the xoverlay window while the stream is playing.

--- How to build the GTK examples ---

Using autotools or using tests/examples/gtk/gtk.sln
