[Lazarus] Missing keywords in code tools

ik idokan at gmail.com
Fri May 8 12:35:49 CEST 2009

I've been watching this thread with interest because we have found that
LCL/GTK2 seems to consume excessive amounts of CPU when performing
certain bitmap operations (including resize operations) even when run on
the local display.

One tends not to notice it locally because most PCs are fast enough for
it not to be an issue in practice. However when executing remotely it
does become a problem as it also does when running on an old PC (eg,
with an old shared memory graphics card) and also when doing more bitmap
intensive work (as we do here in our applications) even on a fast PC.

When we compare our application performance compiled with LCL/Win32 (run
in Windows of course) this problem is not evident. When compiled with
Delphi6, Turbo Delphi Explorer and Kylix it is also not evident. When
compiled with LCL/GTK2 is the only case we've seen the problem (we've
not tested QT4 and others).

We have already reported (and fixed with a patch) one related problem to
do with resizing bitmaps:


but our suspicion is that there are a few more bugs in the LCL/GTK2
interface related to bitmap handling that have not been diagnosed let
alone fixed yet.

Cheers, Bruce.

Bogus?aw Brandys wrote:
> Graeme Geldenhuys wrote:
>> On Fri, May 8, 2009 at 2:49 AM, Paul Ishenin <ip at kmiac.ru> wrote:
>>> Have you tried NX sessions? I like them ;)
>> I used NX sessions to connect from South Africa to Belgium servers. :)
>>  I'm pretty sure internal LAN networks will be much faster, but why
>> install extra remoting software when remoting is built into X11
>> protocol already?
>> A simple "ssh -X user at server" is all that is required to run
>> applications remotely and display locally.
>> Regards,
>>   - Graeme -
> Can you confirm my thought that the worst it become when trying to 
> resize window in Lazarus IDE run remotely ? (that would proof too much 
> repainting calls)
> Boguslaw
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