Removing widgets from layout without destroying them
I’m using a QTabWidget to display various data. This data is contained in classes that are derived from QWidget. As I have several versions of the same data ( for several different years ), I want to...
View ArticleProblem with DB connection
I’ve been trying to connect my program to a database, unsuccessful #include <QCoreApplication> #include <QtSql> #include <QtDebug> int main(int...
View ArticleProblem with DB connection
I’ve been trying to connect my program to a database, unsuccessful #include <QCoreApplication> #include <QtSql> #include <QtDebug> int main(int...
View ArticleQTableView strange behavior after editing
After finishing edit any new row then pressing ENTER QTableView hides the data from the new row and shows “!” character in Vertical header of that row although it added physically in the database...
View ArticleQML ShaderEffect and property type
Hi all, I would like to pass a matrix3×3 to my openGL script but I can’t find the right type to use in QML. It works with a matrix4×4 in the following example : ShaderEffect { ......
View ArticleHelp! Building Qt libraries for VS2012 runtime
Hi, I need to build and link the latest (5.0.1) Qt libraries against the VS2012 runtime libraries. I’m using the non-commercial Qt. I’ve downloaded the qt-everywhere-opensource-src-5.0.1 package and...
View ArticleQt 5 & Python integration
Hello, I have a general question. I have a couple of Python scripts (use python 2.6) based on Numpy, Scipy, PyLab, PyUsb, PySide, … The goal is to integrated the python into Qt 5.0, build a nice GUI,...
View Article[SOLVED] mingw32-make: *** No rule to make target 'all'
I have installed Qt 5.0.1 libraries and Qt Creator 2.6.2 for windows 32-bit (MinGW 4.7), and i get thew followind compile output: 14:18:25: Running steps for project QtGrid... 14:18:25: Starting:...
View ArticleQCA Build on QT5
Hi, I’m trying to compile QCA to use it on QT5. That’s why I downloaded the sources of QCA using the following link: http://delta.affinix.com/download/qca/2.0/qca-2.0.3.tar.bz2 I then downloaded the...
View ArticleHow to pass a signal forwarded parameter into a lambda, defined in the...
I am having difficulties figuring out how to get access to a parameter, passed by a signal in the lambda the signal is connected to. Any ideas?
View ArticleQThread and QTimer
Hi, I have a slot that is connected to QTimer’s signal. I like to move this function to another thread since it’s a very time consuming process but I also need to start or stop the function from...
View ArticleWhen will Qt5.0.2 be released as tar-ball?
Hi Guys, does any one know when the 5.0.2 version will be released? Will it be officially released? I know I can get it from git but it would be nice to know if and when it will be officially released....
View ArticleLooking for Qt and C++ Developer in Sophia Antipolis (France)
Hi, On behalf of our company I’d like to encourage you to apply for the offer below. Cyclad is an international IT Consulting and Outsourcing Company. Since 2007 we have been supporting our Clients and...
View ArticleAnimate QGraphicsWidget by change of position.
This must be an easy one, but for some reason I can’t animate my Widget. So a snippet of my widget code is: class RoundedBox : public QGraphicsWidget { Q_PROPERTY( QPointF pos...
View ArticleQt performance on Windows CE
Hello, I’ve been trying to find information on how Qt libraries performance compare to WinGDI on Windows CE 5. So far, I’ve found nothing useful. Has anyone tried both? How does Qt perform? I’m looking...
View ArticleMinGW Qt Application Deployment NOT WORKING
Before anything: yes, I have followed the guide: http://qt-project.org/doc/qt-5.0/qtdoc/deployment-windows.html My platform target is windows. My toolchain is mingw. I am using Qt Creator. Here are the...
View Articlepause functionality in Qt using QTimer on button press
0 down vote favorite I am trying to implement pause button for a game I am developing in Qt + OpenGL. I want to implement it using QTimer. Basically I am updating screen per 100ms. So in order to pause...
View ArticleQSqlDatabase: QMYSQL driver not loaded. Why?
Hi I compiled Qt 5.0.2 with MySQL support. Driver plugin is there but program can’t load it with a funny message: QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QSQLITE QMYSQL...
View ArticleProblem building quazip-Libary 0.5.1
I have problems building the quazip libary (version 0.5.1) on Windows 7 (32-bit) with Qt 5.0.1 32-Bit LGPL installed. When i run in the Qt-Commandprompt: qmake mingw32-make with the...
View ArticleQt5 (How to install an addon/ module like Qt Location for instance)
Hello dear all! I installed QtSDk 5.0.1 under Ubuntu this evening and the maintanance tool provides “Remove all components” only. I would like to add the add-on/ module Qt Location to my Qt5...
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