[Tcl-bugs] [ tktoolkit-Bugs-458790 ] Infinite loop of focus events

[<no...@so...>]

Bugs item #458790, was opened at 2001-09-05 09:29
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Category: 67. Events
Group: 8.4a3
>Status: Closed
>Resolution: Invalid
Priority: 5
Submitted By: Christopher Nelson (chris_nelson)
Assigned to: Jeffrey Hobbs (hobbs)
Summary: Infinite loop of focus events

Initial Comment:
In what I believe is a fairly typical structure for handling mega-widgets, I get an infinite loop of 
focus events which, in my particular case, constantly selects the only character in an entry so 
that you can't type more.  The attached script demonstrates.

I'm running on UNIX with 8.4a3 (well, a late snapshot of a4, I'm about to get the Real Thing).  
Bruce Hartweg <brh...@bi...> says this works OK for him "under 98SE with version 
8.3.3 (from ActiveTcl 8.3.3.2)".

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>Comment By: Jeffrey Hobbs (hobbs)
Date: 2001-09-05 16:16

Message:
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Nothing mysterious here.  On Unix, the message box is coded 
such that it returns focus to the last element.  That 
is .f2.  The test is rigged to want to give focus to .f1.  
Each of those has a FocusIn that sets and 'after idle' to 
set focus to their interior bits.  Both focuses get called, 
the idle events hit - and whammo, a loop.  I'm not sure 
what the best solution is, but this is a clearly coded loop 
condition.

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Comment By: Christopher Nelson (chris_nelson)
Date: 2001-09-05 09:39

Message:
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OK.  It seems to work for me, too, on NT w/ 8.4a3.  'Guess it's a UNIX-only issue; Specifically, I'm running 
on Solaris where `uname -a` returns 

   SunOS urchin 5.8 Generic_108528-05 sun4u sparc SUNW,UltraSPARC-IIi-Engine

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Comment By: Christopher Nelson (chris_nelson)
Date: 2001-09-05 09:31

Message:
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user_id=107514

When I said "a late snapshot of a4", I meant "a3".  Sorry.

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