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Cannot Create A Qwidget When No Gui


An easy calculus inequality that I can't prove Converting the weight of a potato into a letter grade Short story about a human entering a large alien creature, inside of which Related 1Developing standalone gis applications using pyqgis1PyQGIS standalone gdal_ECW_JP2ECW.dll error3QGIS Python script for creating project file5How to add a legend to a canvas in a standalone PyQGIS application?2How to remove a nimingzhe2008 last edited by When I ran my code,no widget appeared and IDE showed me the message "QWidget: Cannot create a QWidget when no GUI is being used" . You need a book to learn Qt, and I suggest you to read "C++ GUI Programming with Qt 4 (2nd Edition)" from Jasmin Blanchette. Source

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 If I receive written permission to use content from a paper without citing, is it plagiarism? It says: QCoreApplication is the base class, QGuiApplication extends the base class with functionality related to handling windows and GUI stuff (non-widget related, e.g. 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

Qapplication Vs Qguiapplication

Mysterious creeper-like explosions Is it safe to use cheap USB data cables? where you have added some data. Glad to know your question was solved (I had no idea). inside custom componentNative Development Reply Topic Options Subscribe to RSS Feed Mark Topic as New Mark Topic as Read Float this Topic to the Top Bookmark Subscribe Printer Friendly Page «

Registration is fast, simple and absolutely free so please, join our community today! QGuiApplication do not support QWidget, so qcustomplot object can't be used in QGuiApplication. Thanks! A perfect metro map Is there a name for the (anti- ) pattern of passing parameters that will only be used several levels deep in the call chain?

Welcome! Qml Qwidget Cannot Create A Qwidget Without Qapplication How can I trust that this is Google? n-dimensional circles! Change QGuiApplication to QApplication and the code will run just fine. #include #include"MainWindow.h" int main(int argc, char *argv[]) { QApplication app(argc, argv); MainWindow w; w.show(); return app.exec(); } If you want

P.S: Did you test with Qt5.4 using QGuiApplication? more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Here is what i did to make it work #include int main(int argc, char *argv[]) { QApplication a(argc, argv); QWidget widget; widget.show(); return a.exec(); } And i did not change For any GUI application using Qt, there is precisely one QApplication object, no matter whether the application has 0, 1, 2 or more windows at any given time.

Qml Qwidget Cannot Create A Qwidget Without Qapplication

asked 7 months ago viewed 197 times active 7 months ago Get the weekly newsletter! 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 Qapplication Vs Qguiapplication Only users with topic management privileges can see it. Qcoreapplication Vs Qapplication The result was this error: "Cannot create a QWidget when no GUI is being used" I looked into it and sure enough people talking about it say: Well...

We recommend upgrading to the latest Safari, Google Chrome, or Firefox. this contact form How to justify Einstein notation manipulations without explicitly writing sums? You cannot get a console to display with QT+=gui no matter how you link. (You can have two executables, or have one call the other, or implement your own console-like thing 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 ); Qt Qapplication

For more details check this "QCoreApplication Class Reference.":http://qt-project.org/doc/qt-4.8/qcoreapplication.html#details Reply Quote 0 Loading More Posts 6 Posts 7169 Views Reply Reply as topic Log in to reply 1 / 1 A site Why is this C++ code faster than my hand-written assembly for testing the Collatz conjecture? Reply With Quote The following user says thank you to wysota for this useful post: KShots(24th April 2007) 24th April 2007,14:18 #5 KShots View Profile View Forum Posts View Blog Entries have a peek here Why are password boxes always blanked out when other sensitive data isn't?

more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Reply Quote 0 MuhamedAuda last edited by Dear nmingzhe2008 it easy to build this project if u used Qt Creator wizard just start new project. From Qt docs: QApplication specializes QGuiApplication with some functionality needed for QWidget-based applications.

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asked 6 months ago viewed 624 times active 6 months ago Related 1How to create a qt plugin that inherits from QWidget0A layout is set, but the QWidget still looks empty3Qt How small could an animal be before it is consciously aware of the effects of quantum mechanics? 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 You also don't have to connect all the slots.

On verses, from major Hindu texts, similar in purport to those found in the Bhagawat Gita Is it unethical to poorly translate an exam from Dutch to English and then present Advanced Search Forum Qt Qt Programming QWidget: Cannot create a QWidget when no GUI is being used If this is your first visit, be sure to check out the FAQ by Is there any known limit for how many dice RPG players are comfortable adding up? Check This Out Therefore, I created an application which uses the Qt core module and makes use of the ncurses, panel, and menu libraries (just to make it fancy).

Where I lived... share|improve this answer answered Apr 2 '11 at 7:12 Daniel Gallagher 4,9841223 add a comment| up vote 9 down vote I found that you can do it with a Qt Console c++ qt qwidget share|improve this question asked Apr 2 '11 at 7:02 Simplicity 10k49138216 add a comment| 5 Answers 5 active oldest votes up vote 15 down vote The problem is and as we all know, Qt does not reliably show icons and other graphics over VNC, so it would become spotty at best.

Unfortunately you'd have to redesign your plugin system for that to work. RaspberryPi serial port What does the Hindu religion think of apostasy? 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. Linked 6 How can I access `processing` with Python?