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From: meeks@osf.org (W. Scott Meeks)
Newsgroups: comp.windows.x.motif
Subject: Re: XmText and arbitrary text additions
Message-ID: <9007111848.AA21638@osf.osf.org>
Date: 11 Jul 90 18:48:30 GMT
References: <9007111555.AA05383@osf.osf.org>
Sender: daemon@ucbvax.BERKELEY.EDU
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Lines: 33


Al's solution was good, but it completely clears the log when MAX_LOG_SIZE
is reached.  To have something more like what xterm does, you need to just
dump the oldest material in the log that doesn't fit anymore.  Here's some
example code:

#define MAX_LOG_SIZE 4000

static log_size = 0;

void add_to_log(str)
    char *str;
{
    int len = strlen(str);

    if (log_size+len < MAX_LOG_SIZE) {
        XmTextReplace (log, log_size, log_size, str);
        log_size += len;
    }
    else 
      {
	diff = (log_size + len) - MAX_LOG_SIZE;
	XmTextReplace (log, 0, diff, "");
	XmTextReplace (log, MAX_LOG_SIZE - len, MAX_LOG_SIZE - len, str);
        log_size=MAX_LOG_SIZE;
    }
}


W. Scott Meeks
Open Software Foundation
meeks@osf.org
(617) 621-7229