Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!bloom-beacon!CRL.DEC.COM!treese
From: treese@CRL.DEC.COM (Win Treese)
Newsgroups: comp.windows.x
Subject: Re: Help changing source with Athena Text Widget.
Message-ID: <8905262324.AA01761@cirocco.DEC.COM>
Date: 26 May 89 23:24:32 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 42


> 
> Can someone send me, or point me in the direction of, help or a simple
> example of how to change sources with a Text Widget. I have tried changing
> the XtNstring and XtNfile values with XtSetValues and XtTextSetValues. I
> am sure I am missing the obvious. 

SetValues isn't the way to go here.  Here's a short function that does the
job:

/* Function:    SetTextFile() sets the text file of the specified widget.
 * Arguments:   w:              Widget to set.
 *              filename:       Name of filename.
 * Returns:     Nothing.
 * Notes:
 */

void
SetTextFile(w, filename)
Widget w;
char *filename;
{
        Arg args[10];
        Cardinal arg_cnt;
        XtTextSource new_src;
        XtTextSource old_src;

        old_src = XtTextGetSource(w);

        arg_cnt = 0;
        XtSetArg(args[arg_cnt], XtNfile, filename); arg_cnt++;
        new_src = XtDiskSourceCreate(w, args, arg_cnt);


        XtTextSetSource(w, new_src, (XtTextPosition) 0);
        XtDiskSourceDestroy(old_src);
}

Happy hacking.

Win Treese						Cambridge Research Lab
treese@crl.dec.com					Digital Equipment Corp.