On 28.03.2009, at 13:31, Juan Vuletich wrote:

> Damien Cassou wrote:
>> On Fri, Mar 27, 2009 at 9:16 PM, Juan Vuletich <juan at jvuletich.org>  
>> wrote:
>>
>>> I'm pleased to announce that Cuis is available. Cuis is a Squeak
>>> distribution with emphasis on simplicity. You can download it from
>>> http://www.jvuletich.org/Cuis/Cuis1.0-0158.zip . The web is not  
>>> done yet.
>>>
>>
>> The content looks very ugly when using a composite window manager  
>> (I'm
>> on Ubuntu with Compiz). When switching off compiz, things looks ok.
>>
>>
> If I remeber correctly, these kind of problems also happened with  
> other Squeak distributions and was due to a kind of bug in BitBlt,  
> right?

Not a BitBlt bug, but how BitBlt is used. If all drawing operations  
would set the Display's alpha component to 1 then it would be fully  
opaque.

> Is it this problem http://bugs.squeak.org/view.php?id=7068 ?


It sounds like that's the one. Old Unix VMs do not ignore the alpha  
channel of Display.

- Bert -