hiding a widget instead of destroying it

[Rok Roskar <rroskar artsci wustl edu>]

Hello....

I am trying to hide a window instead of destroying it when the use clicks
the window manager's 'close' button... I tried making a delete_event
handler for the widget, but it still kills the widget instead of just
hiding it.... can this be remedied? Can you have a dialog pop-up window
without the window-manager frame around it? ANy help would be greatly
appreciated.... Thanks,

Rok