closing widget window

[yen(at)dolphin.upenn.edu (Harry Kao)]

I am running IDL 5.4 under OS 9.1 for mac.

Is there a way to put a little square button on the upper left corner of 
a widget window, just like the one on a mac system window, to allow user 
to just click on it to close the window?

Right now I have to generate a button called 'quit' to go through the 
event handler to close the window by "widget_control,event.top, /destroy"
This gets troublesome when I need to have several windows open at the 
same time, and dedicate window space for this 'quit' bottun.

Thank you.

Harry
--