qmake reports multiple targets and stops
I am working on Qt 5.1.0 with Qt creator 2.7.2 with minGW on windows7(sp1) I tried to build the hello project from command line (C:\Qt\Qt5.1.0\5.1.0\mingw48_32\exaples\qmake\tutorial\) as presicribed...
View Articleerrors with include qtwidget
Hi, i create a gui project and delete main.cpp. i add libpcap and ndpi libs to project. i run simple ndpi example in it's package and it works good (print every thing with printf). when include...
View ArticleAndroid : 'No JNI_OnLoad found' and much more
Hi, Ubuntu 12.04 LTS Qt 5.1.0/Qtcreator2.7.2 Just trying a QtQuick standard example (new project, qtquick etc.). settings: -‘deploy local qt libs/use local qt libs’...
View ArticleAccess a label from inside another thread
Currently i have code that start and stops a thread that counts to 10000. What i now what to do is pass the current number inside the QObject thread to the ui thread so that i can set the text for the...
View ArticleYouTube API v3 - upload video
I would like load myVideo.avi on YouTube with my Qt5 programm. I successful authorisation through OAuth 2.0 and get access_token without errors. But when I try to use API...
View ArticleHow to use cppcheck for Qt projects
Dear all, I’m working on a C++ / Qt project ( 4.5 ) and we would like to analyse the sources with cppcheck. However I’m not sure how to correctly configure it, especially in terms of macros and...
View ArticleQt C++ App and embedded Python
Hi! I’m embedding Python in my application, but I stumbled upon a problem. slots is a reserved keyword by Qt. But it’s also used in one of the Python header files (object.h, line 433). typedef struct{...
View Articleqmake reports multiple targets and stops
I am working on Qt 5.1.0 with Qt creator 2.7.2 with minGW on windows7(sp1) I tried to build the hello project from command line (C:\Qt\Qt5.1.0\5.1.0\mingw48_32\exaples\qmake\tutorial\) as presicribed...
View ArticleQtCreator temporarily freeze on compilation/qmake
Running Debug Compile and Execute for Android, running Win7 + Qt5.1OS + MingW48_32, freezes QtCreator UI temporarily. This does not happen on Qt4.6.3commercial,4.8.4static + QtCreator 2.3.1/2.7/2.8 +...
View Articleqt_debug_new.h
Hi Forum members! What is the “qt_debug_new.h” it good for? And why can’t I use the boost string.hpp library when “qt_debug_new.h” is included? kind regards, reinhart
View ArticleError: Failed to start program. Path or permissions wrong?
Getting the following error: Starting /opt/Qt5.0.2/5.0.2/gcc/bin/serialbutton… Failed to start program. Path or permissions wrong? /opt/Qt5.0.2/5.0.2/gcc/bin/serialbutton exited with code -1 The...
View Articledisplay number for device type LinuxFb
Hi Guys, I am running my embedded Qt application with the options specified below, and the application is not displayed on the Linux based hardware. .\myapplication -qws -display “LinuxFb” In the...
View ArticleQSqlTableModel::insertRow() from QSortFilterProxyModel
Hello. I am trying to get a new row inserted into a QSqlTableModel from a proxy model. I am aware of the map{To,From}Source methods, but I am not having much luck. Probably because I don’t get the...
View ArticleSetting position of individual tabs in a QTabWidget
Hello All. I have inherited a huge QT GUI (well, I say huge; looks big to me, but I’ve no idea what counts as “big” in QT circles) and a list of bugs/features to deal with. One such involves a tabbed...
View ArticleHow to update a label from another thread (correct method of signal/slots &...
below is code for a basic thread that counts to 100. How would i implement this console application in a gui application (specifically having the thread started and stoped by a push button and...
View ArticleThe book "C++ GUI Programming With Qt 4", by jasmin and Mark. Is it for a...
Hi all, Everyone says that the book, “C++ GUI Programming with Qt 4” by Jasmin Blanchette and Marx Summerfield is very good for beginners. But the book is talking about compiling all the projects using...
View ArticleUpdating a QML listview title when the model data changes
My listview is updating fine from c++ code. Problem I have is with the title, I need it to update to a title relevant to the current data – I cannot find an example or seem to work out how to do it.
View ArticleError when closing application in Qt4, C++ QML
Hello, I am having some trouble when I close my application I get an error. I am defining a new QML element by QDeclarativeItem and sharing a property through Q_PROPERTY. My class looks like this:...
View ArticleCan QtCreator 2.8 debug QML on Android device from Windows?
I am trying to make sure I have a working Qt5.1 development environment for Android QML development from a Windows 7 PC. I created a new project from the “Qt Quick 2 Application (Built-in Types)”...
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