Path: utzoo!mnetor!uunet!wucs1!wuphys!lel
From: lel@wuphys.UUCP (Lyle E. Levine)
Newsgroups: comp.sys.amiga.tech
Subject: Re: IDCMP ports
Message-ID: <538@wuphys.UUCP>
Date: 22 Apr 88 18:48:40 GMT
References: <2336@mit-amt.MEDIA.MIT.EDU> <1592@puff.cs.wisc.edu>
Reply-To: lel@wuphys.UUCP (Lyle E. Levine)
Distribution: na
Organization: Physics Dept., Washington U. in St. Louis
Lines: 35
Keywords: screens windows

In article <1592@puff.cs.wisc.edu> avery@puff.WISC.EDU (Aaron Avery) writes:
->In article <2336@mit-amt.MEDIA.MIT.EDU> dlleigh@media-lab.UUCP (Darren L. Leigh) writes:
->>If I have an application that has created a custom screen and I don't
->>want to open any windows, how do I get an IDCMP port between me and
->>Intuition?  All the documentation talks about windows and I don't see
-> 
->I believe you are correct about everything. You must have a window to get
->Intuition to send you IDCMP messages. Yes, this is probably why you see
->gratuitous tiny windows all the time. One of the better ways to do what you 
->want is to do what uShow does. It opens a tiny, invisible window consisting
->entirely of its close gadget in the upper left corner of its screen. This
->gives you a close gadget for your screen, and a window structure with which
->to manage IDCMP messages. If you're not sure how to make it invisible, try
->BORDERLESS and BACKDROP in the NewWindow's Flags field.
->
->-- 
->Aaron Avery (avery@puff.cs.wisc.edu)
->	    ({seismo,caip,allegra,harvard,rutgers,ihnp4}!uwvax!puff!avery)

This is very similar to what I do in the ShowPic() subroutine of my
library.  I put a small invisible window in the upper left corner of
the screen.  I use NO gadgets however.  I use the ACTIVATE flag to
signal me if the window has been clicked in.  If so, I close the
display and exit the subroutine. This seems slightly cleaner and
simpler to me...


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