[directfb-users] Qt 4.7 multi app not working

[Goran Pantar]

Hi,

I have a DirectFB 1.4.3. and Qt 4.7 working on arm target with new gfx
driver. I'm not able to run multiple Qt applications, I get sig 11 when
second Qt app is loaded and then both applications quit.

I'm able to run multiple LiTe example applications on the same DirectFB.
I'm also able to run one Qt app and few Lite apps and this also works. I
don't have a fusion kernel module but multi-app seems to work ok with
LiTe.

I was trying to find differences between LiTe and Qt when initializing
DirectFb and creating Windows but the two looks quite similar.

Are multiple Qt app supported over DirectFB? Is there some special
option needed?

Thank you,

Goran




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[Denis Oliver Kropp]

Hi,
I have a DirectFB 1.4.3. and Qt 4.7 working on arm target with new gfx driver. I’m not able to run multiple Qt applications, I get sig 11 when second Qt app is
loaded and then both applications quit.
I’m able to run multiple LiTe example applications on the same DirectFB. I’m also able to run one Qt app and few Lite apps and this also works. I don’t have a
fusion kernel module but multi-app seems to work ok with LiTe.
I was trying to find differences between LiTe and Qt when initializing DirectFb and creating Windows but the two looks quite similar.
Are multiple Qt app supported over DirectFB? Is there some special option needed?

Did you try running both with "-qws"?

[Goran Pantar]

Thank you Denis,
I tried now with "-qws -display directfb" for each application and this
worked. But only when I have moved to fusion kernel module (I used
version 8.3.0).

I tried before "-qws" on both apps but it didn't work. At that time I
was running userspace multi-app (no kernel module, but it worked fine
for multiple LiTe apps though).



This setup works but the window composing is not working properly. I
can't always get the particular window to be shown on top of others. It
looks like the latest application started will be shown on top of
others, but it is not consistent, some apps can get on top while some
can't.

I also noticed another effect. The first started application works quite
fast (this in one of the Qt examples and I'm just moving its window
around). All the other applications move really slow. This happens also
if I run several identical applications.

Qt is configured with "-embedded arm\-xplatform
qws/linux-arm-gnueabi-g++\-qt-gfx-directfb". I didn't specify any of the
Qt DirectFB compiling options in src/gui/embedded/directfb.pri, so all
is on default.

Also, can you recommend some DirectFB/fusion release version that was
most used with Qt 4.7 (preferably on a ARM system)?

Best regards,
Goran Pantar

-----Original Message-----
Sent: Friday, November 25, 2011 1:12 PM
Subject: Re: [directfb-users] Qt 4.7 multi app not working

Post by Goran Pantar
Hi,
I have a DirectFB 1.4.3. and Qt 4.7 working on arm target with new

gfx driver. I'm not able to run multiple Qt applications, I get sig 11
when second Qt app is

Post by Goran Pantar
loaded and then both applications quit.
I'm able to run multiple LiTe example applications on the same

DirectFB. I'm also able to run one Qt app and few Lite apps and this
also works. I don't have a

Post by Goran Pantar
fusion kernel module but multi-app seems to work ok with LiTe.
I was trying to find differences between LiTe and Qt when

initializing DirectFb and creating Windows but the two looks quite
similar.

Post by Goran Pantar
Are multiple Qt app supported over DirectFB? Is there some special option needed?

Did you try running both with "-qws"?
--
Best regards,
Denis Oliver Kropp
.------------------------------------------.
| DirectFB - Hardware accelerated graphics |
| http://www.directfb.org/ |
"------------------------------------------"

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This e-mail message and its attachments may contain privileged and/or confidential information. Please do not read the message if You are not its designated recipient. If You have received this message by mistake, please inform its sender and destroy the original message and its attachments without reading or storing of any kind. Any unauthorized use, distribution, reproduction or publication of this message is forbidden.
----- Pravne napomene -----
Ova elektronicka poruka i njeni prilozi mogu sadrzavati povlastene informacije i/ili povjerljive informacije. Molimo Vas da poruku ne citate ako niste njen naznaceni primatelj. Ako ste ovu poruku primili greskom, molimo Vas da o tome obavijestite posiljatelja i da izvornu poruku i njene privitke unistite bez citanja ili bilo kakvog pohranjivanja. Svaka neovlastena upotreba, distribucija, reprodukcija ili priopcavanje ove poruke zabranjena je.