OpenEuphoria

RE: Moving the Cursor

• Posted by Jon Snyder <jongsnyder at hotmail.com> Aug 11, 2002
• 512 views

Dan,

Thanks. That's a good idea, but I think that there has to be a better 
way.  

The main reason that i didn't want to have different text boxes was to 
allow the flexibility of using a default area code or just entering 10 
digits into the edit box.  If you noticed my "addDashes()" routine 
formated a 7 digit number like this, 123-4567, and a 10 digit number 
like this, 123-456-7890.  If just 7 digits were entered it would use the 
default area code as the area code.  I realize you could do this with 
multiple edit boxes, but i think that would be more mess than its worth.

There had to be some c routine that would be able to move the cursor to 
the end of an edit box.  Would it be that hard just to link to some c 
routine that would do this?

I also thought of the possiblity of just fooling the key handler into 
thinking that the "End" button was pressed.  I don't know how to even 
start doing something like that.

--Jon Snyder

Dan Moyer wrote:
> Jon,
> 
> Here's an attempt to be helpful; it does *some* of what you want, but 
> not
> exactly always, maybe it could be fixed up, or at least prompt a better
> attempt?
> 
> It uses the "3" edit boxes you *didn't* like, backspaces correctly 
> *some* of
> the time to the *end* of the previous number field (& *doesn't* other 
> times,
> moves to *beginning* of previous instead), & moves from the prefix to 
> the
> last part of the number on filling in 3 digits.  I didn't put the "-"
> between the boxes, nor make the area code move to prefix after filling 
> in 3
> there.  It also uses the "unlink the handler" idea that Don Phillips
> suggested, though I had to use a "dummy" procedure to do it right, "0"
> didn't work for me.
> 
> You could argue that it doesn't actually force positioning of the 
> cursor, &
> you'd be right.  :(   This simple problem seems harder (to me) than it
> sounds!  Maybe there's a simpler solution we're overlooking?
> 
> 
> Dan Moyer
> 
> 
> ----------------------------------------------------------------------------
> 
> -----------
> include Win32Lib.ew
> without warning
> 
> ----------------------------------------------------------------------------
> 
> ----
> constant Window1 = create( Window, "Window1", 0, Default, Default, 400, 
> 300,
> 0 )
> constant Prefix  = create( EditText, "", Window1, 52, 56, 30, 28, 0 )
> constant AreaCode = create( EditText, "123", Window1, 15, 56, 30, 28, 0 
> )
> global constant NUMBER_EDIT = create( EditText, "", Window1, 92, 56, 60, 
> 28,
> 0 )
> 
> constant
>     aStatusBar      = create( StatusBar, "", Window1, 0, 25, 20, 20, 0)
> 
> -----------------------------------------------
> setFocus(Prefix)  -- didn't seem to work, had to re-do the order of 
> creation
>                   -- to make 2nd edit box (Prefix) start out with focus, not
> sure why
> 
> procedure dummy()  -- to unlink handler when changing text in edit boxes
> end procedure
> 
> sequence TheNumber  -- actually just the last part of the number
> sequence ThePrefix
> -------------------------------------------------
> 
> procedure change_prefix()
> 
>   ThePrefix = getText(Prefix)
>   setText(aStatusBar, ThePrefix)
>   if length(ThePrefix) = 3 then
>       setFocus(NUMBER_EDIT)
>   elsif length(ThePrefix) > 3 then
>     onChange[ Prefix] = routine_id("dummy")  -- unlink handler
>     setText(Prefix, ThePrefix[1..3])
>     setFocus(NUMBER_EDIT)
>     -- following needed 4..length; just 4 by itself gave the ascii?
>     setText(NUMBER_EDIT, ThePrefix[4..length(ThePrefix)] )
>     setFocus(NUMBER_EDIT)
>     onChange[ Prefix] = routine_id( "change_prefix") -- relink handler
>   end if
> end procedure
> onChange[ Prefix] = routine_id( "change_prefix")
> 
> 
> --  CHECK FOR BACKSPACE KEY IN THE EDIT BOXES
> --  IF EDIT BOX EMPTY, MOVE BACK TO PREVIOUS EDIT BOX:
> 
> procedure onKeyDown_NUMBER_EDIT(int keyCode, int shift )
>   if keyCode = VK_BACK and length(getText(NUMBER_EDIT)) = 0 then
>      setFocus(Prefix)
>   end if
> 
> end procedure
> onKeyDown[NUMBER_EDIT] = routine_id("onKeyDown_NUMBER_EDIT")
> 
> procedure onKeyDown_Prefix(int keyCode, int shift )
>   if keyCode = VK_BACK and length(getText(Prefix)) = 0 then
>      setFocus(AreaCode)
>   end if
> 
> end procedure
<snip>