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Mobile and Embedded

The forum for developing everything embedded: Linux, WinCE, Symbian, MeeGo... you name it.
14.1k Topics 62.5k Posts
  • Building Qt 5.4 beta for new board

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    It is not public yet - everything is under NDA. But thanks for the advice. Will do that.
  • Sample program hellotr.pro cannot build and run. Why? (Solved)

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    https://www.youtube.com/watch?v=V9Gep6-r8ns Attach is the youtube on how translation can be done in Qt
  • Multiple copy of the same picture in ui (Solved)

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    No... Do i set this variable on the right hand side main window properties? I try tomorrow. Thanks you very much, i was pulling my hair. I have same categories of problem in other threads, please help me too.
  • Export control status

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    Thank you SGaist for your reply. I work for a company that makes software. This software may be distributed in several countries. So, before deciding to use any open source software in our developments, we have to analyse what we are allowed to do. As you suggest, I have just redirected the question to Digia Contact form, and I'll let you know here, just in case someone be interested. ;-)
  • Cross-Compile on Banana Pi

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    Well, I don't find any rootfs for the BananaPi. In particular, for the Bananian Linux which is a debian based image. Do you have any suggestions where I can get those since the "Linaro Releases":https://releases.linaro.org/ site doesn't provide it?
  • Please Help: "response passed but not finished" in Apache error log

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    I resolved this issue by adding the destructors to all the classes where QT objects were being instantiated by the constructors.
  • Android qcamera 5.4 beta

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    [quote author="SGaist" date="1414105456"]What library will you use for your processing ?[/quote] I use "Population library ":http://www.population-image.fr/wordpress/ It is an open-source library and a good alternative of OpenCV. I cross my fingers for the release of QT 5.4 to have QWidget to access camera.
  • Rotating screen in Qt5.2.1

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    See this thread: "Qt 5 embedded screen rotation":http://qt-project.org/forums/viewthread/23393
  • 0 Votes
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    SGaistS
    Patch got in, so you'll be fine when 5.4 RC comes out
  • Qt 5.3.2 QRadioTuner: radio example failed to detect radio at /dev/radio0

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    SGaistS
    Hi, AFAIK, the device is hardcoded to /dev/radio0. Since you're already building Qt, you can edit the v4lradiocontrol.cpp file to modify this value
  • Qt Camera example doesn't work on Android

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    So what is the difference between the Widget camera example and the declarative-camera example? I've tried both v5.3 (?) and on a nexus7 the later works fine. Is it a widget vs qml thing? Is there a work around for using the qml code that works in conjunction with a widget based app?
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    SGaistS
    Hi, Please stop re-posting almost same questions. This subject is already being talked about "here":http://qt-project.org/forums/viewthread/48844/ Closing this one.
  • Qt 5.4 Beta, Windows Phone 8.1, White Screen

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  • 0 Votes
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    geiliality! [quote author="ZeAL0T" date="1385616053"][quote author="strahlex" date="1385567834"]Have you solved the problem? I get the same result on Linux.[/quote] For windows issue I've just copied qmake binary file from existing Qt MinGW distribution. So all Qt binaries was builded fine except qmake. Under Linux I haven't got this problem. Here is my configuration script for Linux: @./configure -opensource -confirm-license -prefix $PWD/qtbase -developer-build -xplatform android-g++ -nomake tests -nomake examples -android-ndk $PWD/../android-ndk-r9 -android-sdk $PWD/../android-sdk-linux -android-ndk-host linux-x86_64 -android-toolchain-version 4.8 -skip qttranslations -skip qtwebkit -skip qtserialport -skip qtwebkit-examples -DQT_COORD_TYPE=double@ And this is the build script: @export ANDROID_BUILD_TOOLS_REVISION=18.1.1 make -jgrep -c ^processor /proc/cpuinfo make module-qtsvg-all -jgrep -c ^processor /proc/cpuinfo make module-qtscripttools-all -jgrep -c ^processor /proc/cpuinfo@ Note that -jgrep -c ^processor /proc/cpuinfo just sets the number of build threads you can omit it.[/quote]
  • Font size out of control on Arm9, Linux 2.6, Qt5.3.2 QtWidgets

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  • [SOLVED] Qt 5.4 beta on iOS - low pixmap quality

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    Hi, It works! Thanks for your help! Just two hints in case anyone reads that Use setDevicePixelRatio after loading pixmap to QPixmap Update your app layout with size=pixmap.size()/pixelRatio Cheers Marek
  • Qt Everywhere 5.3.2 embedded LCD 480x272 and system dialogs

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  • [SOLVED] Statically linked Qt and gfx-transformed driver

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    SGaistS
    That's the question I wanted to ask first but I've only thought of writing it :-D Don't worry, it's one of the useful document that's always missed when dealing with a static build of Qt Since you found out how to make it work, please update the thread title prepending solved so other forum users may know a solution has been found :)
  • Need some feed back on a Gauge widget

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  • Paint over QVideoWidget

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    I know it's an old thread (4 years), but others may find it through a search engine, like I did, trying to find a solution. What worked for me was to do this: Instead of using QVideoWidget, use a QGraphicsView: Create a sub-class of QGraphicsView (say, MyGraphicsView) Create a QGraphicsScene, adding to the graphics view (setScene) Create a QGraphicsVideoItem and add it to your scene (addItem) Set the player output to the graphics video created on step 3 Override paintEvent on your subclass and do your drawing Here is some sample code: @MyGraphicsView *view = new MyGraphicsView(this); QGraphicsScene *scene = new QGraphicsScene(view); QGraphicsVideoItem *item = new QGraphicsVideoItem(); view->setScene(scene); scene->addItem(item); player->setVideoOutput(item);@ Now, for the paintEvent: @void MyGraphicsView::paintEvent(QPaintEvent *e) { QGraphicsView::paintEvent(e); QPainter painter(this->viewport()); // Do your drawing. // For e.g., draw a rectangle: painter.setPen(Qt::black); painter.drawRect(10, 10, 200, 200); }@