[comp.windows.x] selection problem

jcarson@carrel.bcm.tmc.edu (Janet Carson) (09/08/89)

I have a program which is using XtOwnSelection and XtGetSelectionValue to 
communicate using the XA_PRIMARY selection.  

I can start up this program twice and successfully pass a piece of data 
from one instantiation to the other, but if the "receiver" exits before 
the "sender" while the "sender" still owns the selection, my program dies
with the following message:

X Protocol error:  not a valid window ID
  Major opcode of failed request:  2 (X_ChangeWindowAttributes)
  Minor opcode of failed request:  0
  Resource id in failed request:  0xc00005
  Serial number of failed request:  272
  Current serial number in output stream:  276

Any hints on where to look for bugs or how to use this error message
to track down where the problem is coming from would be appreciated!

Thanks!

Janet L. Carson                               internet: jcarson@bcm.tmc.edu 
Baylor College of Medicine              uucp: {rutgers,mailrus}!bcm!jcarson
Janet L. Carson                               internet: jcarson@bcm.tmc.edu 
Baylor College of Medicine              uucp: {rutgers,mailrus}!bcm!jcarson

rws@EXPO.LCS.MIT.EDU (Bob Scheifler) (09/09/89)

    Any hints on where to look for bugs or how to use this error message
    to track down where the problem is coming from would be appreciated!

Run the application in -synchronous mode under a debugger.