cally invoked when mouse button 1 is released over the Button
window.
</DD>
</DL>
<DL><DT><A NAME="-default"><B>-default</B></A></DT>
<DD>

Specifies one of three states for the default ring: <B>normal</B>, <B>active</B>,
or <B>disabled</B>. In active state, the button is drawn with the platform specific
appearance for a default button. In normal state, the button is drawn with the platform
specific appearance for a non-default button, leaving enough space to draw the default
button appearance. The normal a