[Tcl-bugs] [ tktoolkit-Bugs-220269 ] Error: can't read "tkPriv(x)": no such element in array

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

Bugs item #220269, was opened at 2000-10-31 15:01
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Category: 18. [text]
Group: 8.3.4
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Brent B. Welch (welch)
Assigned to: Jeffrey Hobbs (hobbs)
>Summary: Error: can't read "tkPriv(x)": no such element in array

Initial Comment:
OriginalBugID: 3987 Bug
Version: 8.3b1
SubmitDate: '2000-01-07'
LastModified: '2000-01-17'
Severity: CRIT
Status: Closed
Submitter: techsupp
ChangedBy: hobbs
OS: Windows 98
Machine: Micron P2-450, 256MB RAM
ClosedDate: '2000-01-17'


Name: Brian Schmidt


ReproducibleScript:

This error message pops up whenever the mouse passes over a toplevel window.  I normally get the error after first starting up wish (and not entering ANY commands) and passing the mouse over the console.  The below stack trace is from when I got the error on a toplevel window in my application after first starting it up.


This error is intermittent and relatively rare.  However, the only remedy I can find is to reboot my system.  Otherwise the error keep reoccurring even though the Tcl/Tk application or wish is shut down and restarted.


The stack trace code isn't in my application and must be in the core distribution.


Errorbox message: Error: can't read "tkPriv(x)": no such element in array


Thanks!


ObservedBehavior:

can't read "tkPriv(x)": no such element in array

    while executing

"if {abs(122-$tkPriv(x)) > 2} {

	    set tkPriv(mouseMoved) 1

	}"

    invoked from within

"if {!$tk_strictMotif} {

	if {abs(122-$tkPriv(x)) > 2} {

	    set tkPriv(mouseMoved) 1

	}

	.tCategories.fCategories.fAddDelete.eCategory scan dragto 12..."

    (command bound to event)




The user noted that this really only happens over an entry.
I wonder if the user is hitting the problem where they have
given the script a name of one of the core widgets (like
entry.tcl or button.tcl), which is known to cause an error
because the class of the main toplevel will be set to that
of one of the widgets. 
-- 01/10/2000 hobbs
Closed due to lack of reproducability (on our side, and on
the users side). 
-- 01/17/2000 hobbs

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>Comment By: Jeffrey Hobbs (hobbs)
Date: 2001-12-27 13:59

Message:
Logged In: YES 
user_id=72656

I just don't see how these can get triggered, since they 
are in B2-Motion event bindings only, where tkPriv(x) is 
set in the B2-Press binding.  However, I'm adding extra 
checks just in case.  Code added to 8.4a4cvs for entry, 
spinbox and text to work around this.

----------------------------------------------------------------------

Comment By: Don Porter (dgp)
Date: 2001-11-28 05:56

Message:
Logged In: YES 
user_id=80530

The recent comments are about [text] rather than
[entry], so I'm re-opening this one and assigning
to the [text] category.

----------------------------------------------------------------------

Comment By: Christian Heide Damm (chdamm)
Date: 2001-11-27 23:17

Message:
Logged In: YES 
user_id=274893

Further aid in reproducing the problem: use a program called Hibernate on Windows 2000.

1. Start wish
2. Create a text widget, activate it, and write some text in it
3. Move the mouse cursor outside the text widget
4. Close wish
5. Hibernate Win2000
6. Start Win2000
7. Start wish
8. Create a text widget, activate it, and write some text in it
9. Move the mouse cursor outside the text widget
10. error


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Comment By: Don Porter (dgp)
Date: 2001-11-27 14:33

Message:
Logged In: YES 
user_id=80530

This could be a duplicate of Tk Bug 462629

----------------------------------------------------------------------

Comment By: Christian Heide Damm (chdamm)
Date: 2001-07-19 01:47

Message:
Logged In: YES 
user_id=274893

We have experienced this problem with 8.4a2 too (although 
it fails in a different line):

       can't read "tkPriv(x)": no such element in array
           while executing
       "if {(19 != $tkPriv(x)) || (9 != $tkPriv(y))} {
       set tkPriv(mouseMoved) 1
       }"
           invoked from within
       "if {!$tk_strictMotif} {
       if {(19 != $tkPriv(x)) || (9 != $tkPriv(y))} {
       set tkPriv(mouseMoved) 1
       }
       if {$tkPriv(mouseMoved)} {
       .workspace995485562_757.w..."
           (command bound to event)

Where .workspxxx.wxxx is a canvas with a.o. a "bind $canvas 
<B1-Motion> ..." binding.

Our situation, too, involves a "text" widget, which is 
placed on top of the canvas, and the error occurred when 
the user moved the mouse cursor out of the text widget and 
into the canvas.

----------------------------------------------------------------------

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