Remember that the use of the U <device ID> prior to the W command
controls the effect of the "!" or control character written. Then you must
switch back to explicitly control several IO devices.
On Wed, 13 Jul 2005, Kevin Toppenberg wrote:
Maury,
This was the problem. Apparently with M sees a !, it
automatically resets $X, but writing a $char(13)
doesn't. This seems kind of an odd mechanism.
I was switching back and forth between writing files
out to a file and writing the progress on the screen.
It seems that there is only ONE $X, not one each for
the file and another for the screen. So I had to make
the switch between states just after a ! had been
written to the file.
Thanks for the help. Also, I hadn't known that write
*x is the same as write $char(x). So I learn
something every day... :-)
Thanks
Kevin
--- Maury Pepper <[EMAIL PROTECTED]> wrote:
It would help to to know what your code looks like
and exactly what you want the output to look like,
but let me offer a couple of thoughts:
1. If you are using the ? tab format character, you
need to let GTM know the position of the cursor.
Using ! sets $X to 0. An escape sequence might set
$X depending on how it is issued. I don't know
about GTM, but other M's let you set $X directly.
So just insert:
S $X=0 following the W *13 or $C(13).
2. Most systems provide a way to define line
length. This can be used to automatically wrap long
lines. Common values are 80 and 132. Generally,
there's a way to turn this off or disable it by
setting the line length to 0. It looks like some of
your lines are wrapping so you are probably having
this problem. Again, the solution is to S $X=0 if
GTM allows that and/or disable line wrapping.
----- Original Message -----
From: "Kevin Toppenberg" <[EMAIL PROTECTED]>
To: "Hardhats Sourceforge"
<hardhats-members@lists.sourceforge.net>
Sent: Tuesday, July 12, 2005 11:47 PM
Subject: [Hardhats-members] Does W ! flush an output
buffer?
I am in the middle of writing a function to display
a
progress bar.
I want the bar to stay on one line, so at the end
of
each line, I need to do something to get back to
the
beginning of line.
My first approach was to write the line, then
write a
$char(13) to go back to the beginning of the line,
ready for the next refresh.
But this gave very odd output, like this:
Lets begin...
Progress:
94%--------------------------------------------->||
Progress: 89%------------------------>|--|
Progress:
84%-------------------------------------->|---
Progress:
74%----------------------------------->|---------|
Progress: 69%--------------------|-----------|
Progress:
64%----------------------------->|--------
Progress:
59%-------------------------->|------------------|
Progress: 49%------------------------------------|
Progress: 44%------------------->|--------------
Progress:
39%----------------->|---------------------------|
Progress:
29%----------------------------------------|
Progress: 24%---------->|-------------------
Progress:
19%-------->|------------------------------------|
Progress:
9%---->|--------------------------------------|
Progress: 4%->|------------------------
-------------------|
All done!...
But if, instead, I write a !, and then issue an
escape
sequence to move the cursor up one line, it works
perfectly.
It acts like it drops characters unless I write a
!
Does anyone know what is going on?
thanks
Kevn
GTM>
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