Console (frame buffer) or X11
I compiled the Qt5 for Raspberry Pi with the following configure command: ./configure -opengl es2 -device linux-rasp-pi-g++ -device-option...
View ArticleVideoOutput from /dev/video
Hello, reading the docs I don’t understand how to show a video stream from a /dev/video* device. The help says about source property: This property holds the source item providing the video frames like...
View ArticleevaluateJavaScript was removed in QtWebKit 3.0 ?
Hi, When I use “evaluateJavaScript” method of WebView in QML by importing QtWebKit 3.0 I got the error “TypeError: Object [object Object] has no method ‘evaluateJavaScript’ “ How can I use...
View Articleperhaps a qt5.1 bug
with Qt5 when in a ui file for a property an empty string is set: then calling the designer will trigger my appropriate routine in my custom widget however when loading the file with the QuiLoader the...
View ArticleQSGGeometry / scenegraph: how to reuse data from QSGGeometry
Hi, I am using scenegraph to generate a chart and so each x ms I get a new data sample from the input module. Now I regenerate the data constantly using a for loop: ...
View ArticleQt5.1 TextField - Keys attached property - capturing key-presses
Hey, With the following code: import QtQuick 2.1 import QtQuick.Controls 1.0 import QtQuick.Layouts 1.0 ApplicationWindow { title: qsTr("Some App") ...
View ArticleQListView: Drag item disappears
Hi, Was this issue ever solved? https://bugreports.qt-project.org/browse/QTBUG-1180 Still, with Qt 4.7.4, If I set up a simple QListVIew in icon mode, the item (text and icon) disappears when the...
View Article[SOLVED]I need explanation about connect()
Signal and slot mechanism is heart of qt.So i want to learn it thoroughly.There are somethings that preoccupies me. QObject::Connect() has five different form.One of them takes 3 arguments.Qt...
View ArticleSimple QtWebKit Application Crashes w/ Segmentation Fault
DISCLAIMER: I’m an absolute newb, and I am happy to RTFM if this is an obvious question, just point me where. :) I’ve got Qt5 cross compiled for the Raspberry Pi. Simple QML apps (display “Hello...
View ArticleCopying QFile contents to another QFile, what's the fastest way?
I need to copy a QFile to another QFile in chunks, so I can’t use QFile::copy. Here’s the most primitive implementation: bool CFile::copyChunk(int64_t chunkSize, const QString &destFolder) {...
View ArticleProblem Using QNetworkAccessManager ftp (SOLVED)
QFile *fichero=new QFile("C://a/prueba.txt",this); if (fichero->open(QIODevice::ReadWrite)){ ...
View ArticlePointer to incomplete class type is not allowed
I removed menu bar and now I want to add function to move window… I did it in QtCreator and works perfect… Now trying to do it on Visual Studio 2012, but always get errors… Don’t know how to fix this...
View Articlebox-shadow in stylesheet
I wonder how can I view the shadow by stylesheet? I tried the but it didn’t work! box-shadow: 0px 5px 5px 0px rgb(0, 170, 0);
View ArticleProblem in deployment on Android
I’m new bee in qt and installed everything, even emulator runs fine, but there persists problems in running/deploying app in android emulator or...
View ArticleProblem in deployment on Android
followed all on http://qt-project.org/doc/qt-5.1/qtdoc/android-support.html now problem is how to deploy it on AVD? please help
View ArticleWidget connection doubt
Hi! I have a Widget working with OpenGL properly and i create a Camera Object and i´m trying connect some signals form my Widget to my Camera Object. In my main.cpp i have the following code:...
View ArticleDoes anyone here know how to insert an image into the forum post?
I uploaded an image to photobucket.com, but no matter what I try the post preview in this forum will not show the image. I tried all http:// links to no avail. I already read the forum help and FAQ,...
View ArticlecomboBox read info from database table and close connection in different ui....
Hi, I would like to draw your attention to the following scenario: I created a connection to insert some info into my database table1 (driver QMYSQL). I have an ui. form to create users account; info...
View ArticleDo Qt's network operations support constant streaming of data?
I’d like to use Qt to get streaming data from a Trading Brokerage. I’m using KQPAuth library, but it’s unclear if Qt’s NetworkManager will allow me to make an authenticated request(this it will do) and...
View ArticleQTQuick Memory problem ~~~~~
Our studio using QT 5.1 dev a page editing software , Our software using QML\C++\JS for UI interface & all , When user create New page ( 1024 X 768 ,even 2048 × 1536 iPad ) , The page is...
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