Bugs item #1096074, was opened at 2005-01-04 14:14
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Category: 74. Application Embedding
Group: obsolete: 8.5a3
> Status: Closed
Resolution: None
Priority: 7
Private: No
Submitted By: Chengye Mao (chengyemao)
Assigned to: Jeffrey Hobbs (hobbs)
Summary: Wish crashes if a wrong value is used as a container id

Initial Comment:
There is no protocol for embedded window 
attachment, i.e., any number used as a value for -
use option will be accepted in general.  That may 
result in unexpected crach/panic if an invalid id is 
supplied.

Following is one of examples with Tk 8.4/Window 
2K (patch level 8.4.5).

1) run wish84
2) eval "winfo id ." and find the id is 0x000e0dc8
3) run another wish84
4) eval "toplevel .t -use 0x000e0dc8" and get an 
message box with a title: Console: wish84.exe -
Application Error, with the following message: The 
instruction at "0x0023b6ac" referenced memory 
at "0x00000000".  The memory could not be "read".

Click on OK to terminate the program
Click on CANCEL to debug the program

A user clicks OK and the first wish84 is killed.

To solve the problem, a protocol for 
embedding/embedded attachment is needed.  A 
suggested one is for the container to send back its 
id during attachment so that the embedded window 
will use the returned id the verify the value of -use.

If match, the embbedded application will proceed 
the attachment.  Otherwise the embedded 
application should return TCL_ERROR to cancel the 
operation.







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> Comment By: SourceForge Robot (sf-robot)
Date: 2006-12-13 19:20

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This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112997&aid=1096074&group_id=12997

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