Path: utzoo!attcan!uunet!husc6!bloom-beacon!WHEATIES.AI.MIT.EDU!sundar
From: sundar@WHEATIES.AI.MIT.EDU (Sundar Narasimhan)
Newsgroups: comp.windows.x
Subject: question regarding toolkit callback functions
Message-ID: <8807172352.AA17403@special-k.ai.mit.edu>
Date: 17 Jul 88 23:52:12 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 42


a.
I have an application that has a rather complicated function bound to
a command button's callback. Since this function takes a long time,
ideally I would like to be able to provide feedback to the user at
intermediate points like:

command_init(server)
char *server;
{
    update_status("Contacting remote host ...");
    contact_host(server);
    update_status("Contacting remote host ... Done");	
    group_request();
    update_status("Checking validity ...");
    group_check();
    update_status("Checking validity ...Done");
    /* etc, etc ...*/
}

update_status(), could for example change the text string associated
with a static text widget. Now, the way the toolkit functions are
set up, one would have to write one's own XtMainLoop()/select() to do this, am
I right? (or is there some other way of intercepting this loop)? 
Currently, I get to seeing only the last of the update status
messages.. XFlush() doesn't help.

Ah.. if only I had something like (tv:noting-progress.. 

b. Regarding translation tables: How does one invoke a function normally
in a translation table of a widget from within a program? For example,
I would like to scroll a text window's display one page up from
within my program. There must be a simple way of doing this, which I
am obviously too dense to decipher..

-Sundar

ps. this is just a request: nowadays I dread sending messages to xpert
because of the 20 or so bounceback messages that get generated for
every msg I send out. I know this is kind of a pain, but people, could
everyone garbage collect their mailing lists at least once in a while ...
Thanks.