Gtk Window memory free

[<Supreet Mysore infineon com>]

Hi All,
I have a embedded application running developed with GTK.
I have multiple windows opening and closing.
Every time I destroy a window, it is not freeing the memory that it
consumed.
Is there a way to destroy a window there by clearing all the memory
consumed by the window and all the widgets placed on that window.

Thanks and Regards,
Supreet