Changing the GtkButton appearence

[sadhees kumar <sadheeskumar gmail com>]

Dear Friends,

                    I want to display my button widget with different look.

                    Is there any way to change the appearence of GtkButton from rectangle to ellipse?

                    if anybody achieved this, attach the sample code.

                    Thanks in advance.
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Regards,

K.Sadheeskumar.