From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,783da1e5184ba1c9 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII Path: g2news2.google.com!postnews.google.com!j9g2000prj.googlegroups.com!not-for-mail From: Adam Beneschan Newsgroups: comp.lang.ada Subject: Re: system call Date: Mon, 15 Aug 2011 08:46:46 -0700 (PDT) Organization: http://groups.google.com Message-ID: <6e1fbc7c-6782-4c6b-b605-91669fd2c6e2@j9g2000prj.googlegroups.com> References: <4e46c5c3$0$32648$426a74cc@news.free.fr> <2af248fb-c1d4-4f2e-8011-a498c53dfa42@t30g2000prm.googlegroups.com> NNTP-Posting-Host: 66.126.103.122 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1313423207 25448 127.0.0.1 (15 Aug 2011 15:46:47 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Mon, 15 Aug 2011 15:46:47 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: j9g2000prj.googlegroups.com; posting-host=66.126.103.122; posting-account=duW0ogkAAABjRdnxgLGXDfna0Gc6XqmQ User-Agent: G2/1.0 X-Google-Web-Client: true X-Google-Header-Order: ARLUEHNKC X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.21022; .NET CLR 3.5.30729; .NET CLR 3.0.30618; .NET4.0C),gzip(gfe) Xref: g2news2.google.com comp.lang.ada:21606 Date: 2011-08-15T08:46:46-07:00 List-Id: On Aug 15, 8:40=A0am, Adam Beneschan wrote: > On Aug 13, 11:43=A0am, "philippe.tor...@free.fr" > > > > > > wrote: > > Hello, > > > I have a program, the time of his execution, constructed images, in fac= t > > files in PPM (P3, plain text mode) > > In short, the program does not deal with the viewing of these images > > (failing to find a library to do ...) > > > So I want to entrust this task to an external application (imview, > > xview, qiv ... etc): > > > res =3D system ("imview out.ppm"); > > > But each time this code is a new process > > image viewer (here imview) that arises. > > > My application is waiting while I close imview to move to > > the next iteration. > > > Well, now you have guessed the question for each passage on the line ab= ove, > > I would like the external program (imview, qiv, xview ... whatever), lo= ad a new image > > > Regards! > > I'm not real clear on what you're trying to do. =A0But it sounds like > you want to run imview or some other program once, and have your > program tell that program to display a new image whenever it wants to > display something new. =A0In order for that to work, the image displayer > has to be set up to accept that kind of communication. > > However, if by "imview" you mean the program documented athttp://hugues.z= ahlt.info/software_imview.html, that program appears to > have a server mode. =A0So you'll need to run it in server mode and then > communicate with it via a TCP/IP socket. =A0The documentation should > explain how to do this, but I haven't looked over it carefully. Oh, yeah, one other thing: if you do this, you won't be able to use system("...") to run imview, because "system" will wait for imview to finish, which will never happen. You'll need to find a way to spawn imview without having your application wait for it to finish. There are ways to do this on both Unix/Linux and Windows (you don't say what OS you're using); I think there are probably GNAT library operations to perform that kind of spawning, but someone who's more knowledgeable about GNAT than I am will need to help you with those, if you're using GNAT. There's no Ada language-defined operations for this. -- Adam