[Interest] Interest Digest, Vol 18, Issue 24
Muhammad Minhazul Haque
me at minhazulhaque.com
Thu Mar 14 06:52:29 CET 2013
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On Thu, Mar 14, 2013 at 10:36 AM, <interest-request at qt-project.org> wrote:
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> Today's Topics:
>
> 1. Qt5.0 Qtmultimedia example qmlvideo error
> (Ramakanthreddy_Kesireddy)
> 2. Qt Publish and Subscribe module on Qt5 (Don Sanders)
> 3. Memoryleak under Windows 8, but not under Windows 7
> (wargand at gmx.de)
> 4. Re: Memoryleak under Windows 8, but not under Windows 7
> (Guido Seifert)
> 5. Issues with QT5 demos on i.MX6 (arm - vivanteGPU)
> (Francisco Carrillo)
> 6. QTimer pauses when window minimum (??)
> 7. Re: QTimer pauses when window minimum (Arunprasad Rajkumar)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 13 Mar 2013 14:53:02 +0000
> From: Ramakanthreddy_Kesireddy
> <Ramakanthreddy_Kesireddy at mahindrasatyam.com>
> Subject: [Interest] Qt5.0 Qtmultimedia example qmlvideo error
> To: "interest at qt-project.org" <interest at qt-project.org>
> Message-ID:
> <
> AB7D5F1A402BE846941054CB8D504AFF2A8AD33B at HSTMSATMBX005.mahindrasatyam.ad>
>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi,
>
> I have installed Qt5.0 on target with ubuntu 12.04.
>
> When am trying to run the qmlvideo example application in
> qtmultimedia/examples/video,it gives below error:-
>
> qmlvideo] Content.initialize: loading VideoItem.qml
> Module 'QtMultimedia' does not contain a module identifier directive - it
> cannot be protected from external registrations.
> defaultServiceProvider::requestService(): no service found for -
> "org.qt-project.qt.mediaplayer"
> [qmlvideo] Content.initialize: complete
> [qmlvideo] SceneBasic.onClicked, started = false
> [qmlvideo] Content.start
> [qmlvideo] VideoItem.onError error 5 errorString The QMediaPlayer object
> does not have a valid service
> [qmlvideo] Content.onFatalError
> [qmlvideo] Content.stop
> [qmlvideo] SceneBasic.onClicked, started = false
> [qmlvideo] Content.start
> [qmlvideo] VideoItem.onError error 5 errorString The QMediaPlayer object
> does not have a valid service
> [qmlvideo] Content.onFatalError
> [qmlvideo] Content.stop
> [qmlvideo] SceneBasic.onClicked, started = false
> [qmlvideo] Content.start
> [qmlvideo] VideoItem.onError error 5 errorString The QMediaPlayer object
> does not have a valid service
> [qmlvideo] Content.onFatalError
> [qmlvideo] Content.stop
> [qmlvideo] main.closeScene
> [qmlvideo] main.onSceneSourceChanged source.
>
> Please let me know if am missing anything as I have installed gstreamer
> package 0.10.25 on the target.
>
> Thanks and Regards,
> Ramakanth
>
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> ------------------------------
>
> Message: 2
> Date: Wed, 13 Mar 2013 11:15:18 -0700
> From: Don Sanders <donsanders007 at gmail.com>
> Subject: [Interest] Qt Publish and Subscribe module on Qt5
> To: interest at qt-project.org
> Message-ID:
> <CAByRRHg8Ln-uko_wtBGHHK=
> wubYVOyMHN5tpgMeDbEa4VZmZSw at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi,
>
> Is a version of the Qt Publish and Subscribe module that works with Qt 5
> available?
>
> Publish and subscribe is listed here
> http://qt-project.org/wiki/Qt-Add-ons-Modules as 'actively maintained in
> Qt
> 5 and ... proven to work in the last release'. But it doesn't appear to be
> part of the Qt 5.0.1 package, and I can't see the module listed at
> https://qt.gitorious.org/qt
>
> The maintainer email address listed on
> http://qt-project.org/wiki/Maintainers appears to be out-of-date/invalid.
>
> Possibly I can help with porting, but my interest is limited to using the
> gconf backend on linux.
>
> Best regards,
> Don Sanders
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> ------------------------------
>
> Message: 3
> Date: Wed, 13 Mar 2013 21:45:52 +0100
> From: wargand at gmx.de
> Subject: [Interest] Memoryleak under Windows 8, but not under Windows
> 7
> To: interest at qt-project.org
> Message-ID: <20130313204551.GA1821 at wargi>
> Content-Type: text/plain; charset=us-ascii
>
> Hi,
> is this possible? See title: A user of one of my programs reported that
> it shows a severe memory leak under Windows 8,
> but not under Windows 7. Same installer .exe, which installs its own Qt
> 4.8.5. Sounds a bit fishy to me and before I invest
> much work into this, I ask here if someone experienced something similar
> or if this is even possible.
>
> Guido
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 13 Mar 2013 23:02:06 +0100
> From: Guido Seifert <wargand at gmx.de>
> Subject: Re: [Interest] Memoryleak under Windows 8, but not under
> Windows 7
> To: interest at qt-project.org
> Message-ID: <20130313220206.GA2160 at wargi>
> Content-Type: text/plain; charset=us-ascii
>
> Just forget my last mail. I just learned that this is abslutely
> possible and reported. I was just too focused on Qt. Bad drivers,
> e.g. bad graphics drivers explain this effect mucht better.
>
> Guido
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 13 Mar 2013 16:55:00 -0600
> From: Francisco Carrillo <chisco at gmail.com>
> Subject: [Interest] Issues with QT5 demos on i.MX6 (arm - vivanteGPU)
> To: interest at qt-project.org
> Message-ID:
> <
> CAFqXKcVpC9d985P8chWRi+2qscuOOUPRoJ7+SadomUau5B1Gew at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello Dear Qt Experts
>
>
>
> I am running into some strange issues with Qt5. I have encountered the
> issues with a version I built myself. I've searched the forums and don't
> see any discussion of these issues, though I was searching by error message
> and might have missed something.
>
> These issues can be seen in the Qt OpenGL examples. "hellogl_es2" and
> "2dpaint" seem to display one rendered frame and then break --
> "hellogl_es2" shows the QT word and bubbles, and the GUI is hidden, while
> "2dpaint" just shows the openGL version without label.
>
> It seems that when including a QGLWidget on a form, the QGLWidget would
> work OK, but the rest of the form would not appear. I couldn't click any
> buttons or do anything.
>
>
> Along with these problems I would also see one or more of these error
> messages in the output:
>
> * This plugin does not support setParent!
> * This plugin does not support propagateSizeHints()
> * QOpenGLContext::swapBuffers() called with non-opengl surface
>
>
> -----------------------------------------------------------------------------------------------------------------------------
>
>
>
> If I try with my wayland rootfs, the story is different "hellogl_es2" demo
> will show one good frame and keep it freezed in the background while the
> animation continues on top of that, the problem is that it flickers between
> background and animation and it looks horrible.
>
>
>
>
>
>
> Do you have any hint or idea what could be wrong?
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> ------------------------------
>
> Message: 6
> Date: Thu, 14 Mar 2013 03:06:17 +0000
> From: ?? <devbean at outlook.com>
> Subject: [Interest] QTimer pauses when window minimum
> To: Qt Interest <interest at qt-project.org>
> Message-ID: <BLU174-W9572815009FE385C088E8A3EC0 at phx.gbl>
> Content-Type: text/plain; charset="gb2312"
>
> Hi, there! In my application I need to update UI every 2s. I use QTimer to
> implement this feature. But when the window minimum QTimer stops and
> paintEvent() could not be called. How could I solve this problem? Or could
> you tell me something else to get this feature?
>
> Thank you!
>
> Cheng Liang
> Nanjing, China
> http://www.devbean.net
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> ------------------------------
>
> Message: 7
> Date: Thu, 14 Mar 2013 10:06:34 +0530
> From: Arunprasad Rajkumar <ararunprasad at gmail.com>
> Subject: Re: [Interest] QTimer pauses when window minimum
> To: ?? <devbean at outlook.com>
> Cc: Qt Interest <interest at qt-project.org>
> Message-ID:
> <
> CACDxuFx+znNTez4nxXdKwgrRWGq+EjM4277f7_8fG-B3vE_HNQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> >But when the window minimum QTimer stops and paintEvent() could not be
> called.
> Whether your window is in minimized state?. When window is in minimized
> state it is not visible in screen. Then why you need a paint? Basically
> most of the windowing system optimizes by not sending paintevent when
> window is in minimized state.
>
>
> On 14 March 2013 08:36, ?? <devbean at outlook.com> wrote:
>
> > Hi, there! In my application I need to update UI every 2s. I use QTimer
> to
> > implement this feature. But when the window minimum QTimer stops and
> > paintEvent() could not be called. How could I solve this problem? Or
> could
> > you tell me something else to get this feature?
> >
> > Thank you!
> >
> > Cheng Liang
> > Nanjing, China
> > http://www.devbean.net
> >
> > _______________________________________________
> > Interest mailing list
> > Interest at qt-project.org
> > http://lists.qt-project.org/mailman/listinfo/interest
> >
> >
>
>
> --
> *Arunprasad Rajkumar*
> http://in.linkedin.com/in/ararunprasad
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> End of Interest Digest, Vol 18, Issue 24
> ****************************************
>
--
*Muhammad Minhazul Haque*
*CSE 10, RUET, Rajshahi*
minhazulhaque.com
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