Re: FER - valid keys

On Mon, 22 Jan 2001, Sean Porterfield wrote:

> When FER is set, only certain keys are valid.  The ones I know of are
> arrow keys, TAB, BACKTAB, BACKSPACE, ENTER, FIELD EXIT, FIELD +.  (This
> was tested on a 3487.)  The odd thing about the "real" terminal is left
> arrow which  doesn't move the cursor, all other arrow keys do.  I guess
> it moves left back into the field.

On most terminals, once you get to the end and you've typed the last
digit, the cursor flashes a little differently, and you're in a mode where
you need to press a field-exit (or similar key) before you can continue.

Hitting LEFT/Backspace should put you back to the spot where you can
change the last digit of the field.  The cursor doesn't actually move, it
just blinks differently.  :)

> 
> In tn5250, RESET, left arrow, TAB, BACKTAB, BACKSPACE and FIELD EXIT
> clear the FER.  There is something wrong with FIELD + (don't know if
> it's the last patches from CVS that I got today or if it was like
> that).  From display.c I think it was intended that FIELD+ and FIELD-
> reset the FER.

Can you elaborate on what's wrong with FIELD+?  If it happened in the last
few weeks, its probably my fault. :(   What does it do wrong?

> 
> I added K_ENTER to my display.c and it seems to work well.  I don't know
> how to fix up arrow, right arrow, down arrow, FIELD+, FIELD- (if FIELD-
> should really work - it doesn't on my "real" terminal).
> 

Just above where you added the K_ENTER there is some code that says
something like:

      case K_LEFT:
      case K_BACKSPACE:
         tn5250_display_indicator_clear (This, TN5250_DISPLAY_IND_FER);
         return;
 
Try adding some code below that which looks like this:

      case K_UP:
      case K_DOWN:
      case K_RIGHT:
         tn5250_display_indicator_clear (This, TN5250_DISPLAY_IND_FER);
         break;

(note the "break" instead of "return" will cause it to move up/down/right
as well as clearing FER)

Is that what you're looking for?   (I'd get up and try it on a terminal,
but I've just spent too much time with tn5250 today, already)



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