Model/View Charting/Graphing
I have used a number of Qt Charting libraries like QWT and QCustomPlot but finding them limited since they can’t be easily used for graphing large data. In my thesis, I stored my data in a QSqlDatabase...
View Articlesize inconsistent after converting QByteArray to QString
Hello, I have wrote the following code void PacketDisplayer::log(QString str) { std::cout << str.toAscii().constData() << std::endl; } void...
View Articleqitemdelegate signal / slot
Hello, i have a qitemdelegate on a qtreeview. When the user moves with the cources over a position in a qitemdelegate, i will open a popup window. How can i check the position in a qitemdelegate??
View Articlenot displaying image in the window
the source code QPalette p = palette(); QPixmap pixmap1(":/new/prefix1/BG"); ...
View ArticleQt5 Static Build Error
I’m trying to build the Qt static libraries, but I get the following error: LINK : fatal error LNK1181: cannot open input file 'SDK\Lib\x86.obj' NMAKE : fatal error U1077:...
View Article[SOLVED] Qt5 mingw and mysql driver
did you tested mysql driver in Qt5 with mingw? i’ve created libmysql.a just like i was before with Qt4. when i try to load the driver, fails but afterward lists QMySQL and QMySQL3 as available drivers.
View ArticleHow can i know what animations QPropertyAnimation can do?
For example i know how to fade in/fade out a widget QGraphicsOpacityEffect* opacityEffect = new QGraphicsOpacityEffect(this); ...
View ArticleSize of custom qml types
Hi all, I’m trying to extend qml by a custom type defined in C++. My type – called SvgItem – is supposed to be able to render a single element of a svg file (by elementId, like QGraphicsSvgItem). I got...
View ArticleCannot include QtMultimedia on Qt 4.8.1
Hello everyone, I think I have a little problem I want do a Audio recorder but… I cannot include the QtMultimedia I’m using Ubuntu 12.04.1 LTS, and the 4.8.1 version of Qt here is the .pro file: QT +=...
View ArticleCreating IDE-like layout?
Hey there. I’d like to create IDE-like layout. What I mean by that – this screen describes it all: https://secweb.cs.odu.edu/~zeil/cs252/website/Info/yourOwnCompiler/pages/codeblocks.gif My only...
View ArticleQt OpenGL window example crash and slow behavior.
I am using the code from this OpenGL window example: http://qt-project.org/doc/qt-5.0/qtgui/openglwindow.html The only thing I haven’t changed is the default .pro file:...
View ArticleA little bit OFF but interesting...
Future of JavaScript in desktop applications: http://treitter.livejournal.com/14871.html
View ArticleQt 5, bluescreen
Hi, I have a very strange problem since I upgraded Qt from 4.8.0 to 5.0.1 (qtCreator and mingw included, so everything is up to date) My computer is maybe quiet old but it’s still Windows 7 and I never...
View ArticleMinor security vulnerability found for Unix-like systems
Hi, a new and important security message was just posted on Qt-Announce by Thiago. Here is a link [lists.qt-project.org]. Affected are all versions before 5.0.1. Fix will be included in next 4.7.x and...
View ArticleDeploy an QML App in Windows!
Hi there! I had just started working on QT and QML for a project! I had compiled a sample program with QT5.1 and used dependency walker for solving the dll dependencies! While running the exe it asked...
View ArticleOpenGL from 4.8 to 5.0.1
I am trying to compile my application using Qt 5.0.1 (mingw4_7). 6 errors something like: ‘GLdouble’ has a previous declaration as ‘typedef double GLdouble’ and about 300 warnings: GL_FALSE redefined,...
View Articleqt-creator : Recommanded way to create a window to integrate an mdiarea
I get one project A with, for the time being one form. In this form is defined an mdiarea. I now want to design the widgets that the mdiarea will host. How should I proceed : Add New > Qt...
View ArticleSenior Application Developer wanted: London - Mobile
Truphone’s Labs team has the important task of being disruptive in product development in real-time communications applications on mobile devices, within a larger company. We’re focussed on making...
View ArticleQTableView: delegate::paint() is not called when mouse leaves the widget
Hi, I use a QTableView along with my custom delegate and model. I have enabled mouse tracking for QTableView. When the mouse enters a table cell, I draw an icon in the cell and clears this icon when...
View ArticleStatic const member value not available (at runtime) - code works fine under...
Developed under Qt 4.8 last year using Visual Studio 2010 and have had the code working for months. Moved to Qt5 this year and also started using Qt Creator (QML/QtQuick 2). The code contains a global...
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