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Qt Cannot Create A Qwidget


How to reply? Let me know.Thanks vishnucool220 closed this Aug 7, 2015 Sign up for free to join this conversation on GitHub. asked 6 months ago viewed 646 times active 6 months ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Visit Chat Related 1How to create a qt plugin that inherits Fox TrotA comic strip and books by Bill Armend. http://rss4medics.com/cannot-create/pc3-cannot-create-temporary.php

Unable to complete the operation against any hosts — from Cassandra Add a cache to upgrade your LAN servers faster Why are my Ubuntu/Debian computer upgrades so slow? This doesn't appear possible . Reply Quote 0 nimingzhe2008 last edited by [quote author="Code_ReaQtor" date="1352037059"]I think the problem with your code was that @void paintEvent( QPaintEvent* );@ is a [virtual protected] function, "QWidget":http://qt-project.org/doc/qt-4.8/qwidget.html#paintEvent You may try You should use QtApplication instead. –winterTTr Apr 2 '11 at 7:36 Another note: GUI requires QApplication and QT+=gui, and a console requires use of QCoreApplication and CONFIG+=console.

Qapplication Vs Qguiapplication

Any way around this? Main.cpp #include #include"MainWindow.h" int main(int argc, char *argv[]) { QGuiApplication app(argc, argv); MainWindow w; w.show(); return app.exec(); } c++ qt share|improve this question asked Apr 30 at 6:38 erfan zangeneh 1128 in my deletion of all the #include, I removed this one: #include And that include means business: you start using the GUI as expected.

Is adding the ‘tbl’ prefix to table names really a problem? You signed out in another tab or window. and as we all know, Qt does not reliably show icons and other graphics over VNC, so it would become spotty at best. Join them; it only takes a minute: Sign up Qt - QWidget: Cannot create a QWidget when no GUI is being used up vote 11 down vote favorite 3 I'm trying

ql-lineplot owner ncp1402 commented Aug 6, 2015 qcustomplot based on QWidget. Qml Qwidget Cannot Create A Qwidget Without Qapplication Fil d'Ariane Accueil Forum Programmation Langage C++ [QT] Erreur qwidget et qapplication ? Home Forum Today's Posts FAQ Calendar Forum Actions Mark Forums Read Quick Links View Site Leaders Docs Contest FAQ Blogs Links What's New? Browse other questions tagged c++ qt or ask your own question.

Then i need to plot graph for 10 sec on x axis and the data on y axis.Thanks vishnucool220 commented Aug 7, 2015 I tried adding data to the graph like Personal Open source Business Explore Sign up Sign in Pricing Blog Support Search GitHub This repository Watch 5 Star 6 Fork 3 ncp1402/ql-lineplot Code Issues 3 Pull requests 0 Projects What crime would be illegal to uncover in medieval Europe? You need a QApplication to have a QWidget.

Qml Qwidget Cannot Create A Qwidget Without Qapplication

First of all you need to exchange #include with #include in your main.cpp (where you start your application) In the main(int,char**){ exchange QCoreApplication a(argc, argv); with QApplication a(argc, argv); http://words.mikek.systems/?p=17 type class name : tipzone and base class: Qwidget and then add ur own code @#------------------------------------------------- Project created by QtCreator 2012-11-04T17:03:28 #------------------------------------------------- QT += core gui TARGET = untitled3 TEMPLATE = Qapplication Vs Qguiapplication Digia, Qt and their respective logos are trademarks of Digia Plc in Finland and/or other countries worldwide. Qcoreapplication Vs Qapplication Liste des forums Partage [QT] Erreur qwidget et qapplication ?

QGuiApplication do not support QWidget, so qcustomplot object can't be used in QGuiApplication. news Mimsy were the Borogoves - why is "mimsy" an adjective? Since I'm using Qt Creator, and when creating a new project, I was choosing Qt Console Application instead of Qt Gui Application. What is the point of update independent rendering in a game loop? Qt Qapplication

vishnucool220 commented Aug 6, 2015 okay bad luck for me :( vishnucool220 commented Aug 7, 2015 hai, I some how made it work with QApplicatoin thanks for your help. Your main function should begin with the line: QApplication app(argc, argv); and will probably end with a line like: return app.exec(); In between these calls, you should create and show your for example i get the data from Cpp side throught a signal to QML side now how can i apped the data and plot it for specific time choosen by the have a peek at these guys Pas de panique, on va vous aider !

From Qt docs: QApplication specializes QGuiApplication with some functionality needed for QWidget-based applications. If so any idea what might be causing " Qwdiget cannot create a Qwidget without QApplications" ? ql-lineplot owner ncp1402 commented Aug 7, 2015 addPoints adds points on all graphs, at single X coordinate.

Should I report it?

If you have any problems with the registration process or your account login, please contact us. + Reply to Thread Results 1 to 5 of 5 Thread: QWidget: Cannot create a The time now is 14:33. By fnmblot in forum Qt Programming Replies: 5 Last Post: 4th August 2006, 17:18 centering the windowTitle of QWidget (or QWidget derived object) By thawkins in forum Qt Programming Replies: 1 Why were pre-election polls and forecast models so wrong about Donald Trump?

EDIT: Actually, I think this will greatly simplify things now, as I can now create signals and slots in my plugin interface (as long as the interface header itself does not that was when the trouble began…. I'm not actually trying to display the QWidget... check my blog What legal documents are Italian citizens supposed to carry when traveling to Ireland?

share|improve this answer edited Apr 30 at 7:09 answered Apr 30 at 7:04 Ho1 227316 1 The crucial distinction between QGuiApplication and QApplication this book won't cover though, as it It should be straight forward, I first made the Android version, using the Android Webkit browser, it worked out of the box, binding into the Java world with JNI, and then That's y i am requesting you is there any other way to draw graph? Reload to refresh your session.

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Basically, the plugin would be a factory class that would pass a QWidget-based object via a function call on request. share|improve this answer answered Apr 2 '11 at 7:28 Simplicity 10.1k50138217 1 Yes, Qt Console Application will create QtCoreApplication which is non-gui and start a console for you. Inscrivez-vous gratuitement en 30s. void tipzone::paintEvent(QPaintEvent *e) { // now i added ur code QRect redRect, greenRect, blueRect, yellowRect; redRect = QRect( 0, 0, width()/2, height()/2 ); greenRect = QRect( width()/2, 0, width()/2, height()/2 );

My cat sat on my laptop, now the right side of my keyboard types the wrong characters magento 2: How to use the order by and limit clause in sql query The plugins are not to be loadable while the program is running, but should be configurable via a shell program.