X11 error from home grown application

[Julien Cristau]

On Tue, May 11, 2010 at 15:54:50 -0400, Geoffrey wrote:

> Anyone know where I can start looking to figure out why I'm getting
> the following error in our application:
> 
> X Error of failed request:  BadMatch (invalid parameter attributes)
>   Major opcode of failed request:  42 (X_SetInputFocus)
>   Serial number of failed request:  7398113
>   Current serial number in output stream:  7398114
> 
Quoting from XSetInputFocus(3):
       The specified focus window must be viewable at the time XSetInputFocus
       is called, or a BadMatch error results.

Cheers,
Julien