how to resize window smaller

[Carl Nygard <cjnygard verizon net>]

Once I've used set_size_request to some size (x,y), I am unable to
resize the window to some smaller size.  Can someone tell me how to
accomplish this?  I've tried resize() on the Gdk::Window for both the
drawingarea and the main toplevel window, nothing seems to work.

Regards,
Carl