Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!uc!nic.MR.NET!nic.stolaf.edu!chopin.psu.edu
From: hannum@chopin.psu.edu (Charles Hannum)
Newsgroups: comp.sys.next
Subject: Re: Can an App launch itself?
Message-ID: <614@nic.stolaf.edu>
Date: 9 Jun 90 01:09:57 GMT
Sender: news@nic.stolaf.edu
Distribution: comp
Organization: The Pennsylvania State University Public NeXT Laboratory
Lines: 57


Yes, this is really quite simple.  If you're using the Interface Builder, then
all you need to do is this:  (Note that this is all from memory, so don't flame
me if it's not quite right.  It should give you enough info to figure it out on
your own.)

  #import <appkit/Application.h>
  extern char *appname;

  [[NXApp appSpeaker] setSendPort:NXPortFromName(NX_WORKSPACEREQUEST, NULL)];
  [[NXApp appSpeaker] openFile:appname];

In your main program, do this:

  char *appname;

  /* Blah, blah */

  int main(int argc, char **argv)
  {
      appname = *argv;

      /* Blah, blah */
  }

That should do exactly what you want, shart a fresh copy of the application.
Hm.  Maybe someone at NeXT could put a 'Spawn' button in Terminal ... B-)


Now, if you're *not* using the Interface Builder, you can do this:

  #import <appkit/Speaker.h>
  id      mySpeaker;

  /* Blah, blah */

  mySpeaker = [Speaker New];
  [mySpeaker setSendPort:NXPortFromName(NX_WORKSPACEREQUEST, NULL)];
  [mySpeaker openFile:appname];
  [mySpeaker free];

NOTE:  You could keep the Speaker allocated throughout the program; you really
don't need to deallocate it.  It's just a matter of your personal preference.


(I'd say 'Hope this helps.', but I know it will ... B-)


ObQuery:  Is there a global version of 'argv'?  Then I wouldn't have to have
main() store a pointer to the app's name; I could just reference argv[0] every
time.
--
 
Virtually,
Charles Martin Hannum		 "Those who say a thing cannot be done should
Please send mail to:		  under no circumstances stand in the way of
hannum@schubert.psu.edu		  he who is doing it." - a misquote