389 Topics
Hallo, I must develop a Client application using (Qt) C++. The server application was developed by somebody. I need to register with the Server application to get data from it. I have problems here. Can anybody please let me know how to proceed. In order to register with the server, …
Hello all, I want to display a hyperlink in qt. For this i need to display the link for the url (as underlined text). I can achieve it easily using style sheets and the url can be opened with webbrowser module.. I want to get the clicked signal of the …
Hi guys, We're writing a GUI based on PyQt, and we're running into an issue when using different resolutions. Problem is, we can't find how to get the GUI elements to automatically resize when the window is resized, or when the GUI is running on a larger resolution than the …
hi guys, i am new in this forum, my project is about Quad Tree image compression, the problem is that it does not succeed to encode large images, it works good for my small 8 by 8 image, i work by QT c++ editor, i attached my project with my …
I have project for ATM application >> & design with QT windows >> How can connect between windows ? please help me soon....
Hi everybody, I just started learning pyqt.. I referred it's wiki page and found some but only two links are useful.. I finished pyqt tutorial in zetcode.. It was really good.. I've downloaded cross-platform GUI programming with pyqt book.. But it's not an ideal book to start with for the …
Hello, Im trying to make some small programs with QT4. Everyting goes well untill I want to create my own widgets with the Q_OBJECT in a class. Then I can't compile the thing anymore. It says: [code]Undefined symbols: "vtable for Communicate", referenced from: __ZTV11Communicate$non_lazy_ptr in main.o ld: symbol(s) not found …
ok, i'm technologically challeneged so please bear w/ me. i've just moved up from my old beaten up white macbook to my new 17" MBP came w/ snow leopard etc. i had a friend do the installs for me, including final cut pro - which is the main reason why …
I wrote a gui with qt and converted it into python.it came below. know I want to use the information witch user entered.for example the text boxes text or want decide around the buttons clicked or any thing else.at all how can i manage my qt forms data in my …
Hi there, please point me to decent 2D plotting library. Compatibility with QT/wx is an added advantage. Oh! I forgot to mention it should be free!
Hi all, and must say a great looking forum! I wish to start developing c++ apps on Linux and would like to know what GUIs are supports out of the box on Linux, especailly the main distros anyway? QT, KDE, GTK, etc? I basically want to write gui apps that …
Hallo All, I am a beginner in C++ and currently need help in finishing the following task: I need to write an UDP code(C++) which sends and receives a random number (between 0 to 100). On the receiver's side there must be an User Interface showing the number received graphically. …
The company that I work for just bought a Qt License, so we've been messing around with it. So far, it's really nice. I'm more of a Java guy, and it's made the transition from Java to C++ much easier. The only real problem I have with it now, is …
I'm creating a media player with Qt & the phonon module: [CODE] #include "mainwindow.h" #include "ui_mainwindow.h" #include <fstream> #include <string.h> #include <stdlib.h> #include <QtGui> void MainWindow::slotFinished(){ int index = sources.indexOf(mediaObject->currentSource()) + 1; mediaObject->enqueue(sources.at(index)); setLabelNowPlaying(); } std::string ExtractFilename( const std::string& path ) { return path.substr( path.find_last_of( '/' ) +1 ); } …
Hello, I have to change this code (c++) on Java, can you help me. [CODE] QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName) { QFile file(fileName); if (!file.open(QFile::ReadOnly)) return new QStringListModel(completer); #ifndef QT_NO_CURSOR QApplication::setOverrideCursor(QCursor(Qt::WaitCursor)); #endif QStringList words; while (!file.atEnd()) { QByteArray line = file.readLine(); if (!line.isEmpty()) words << line.trimmed(); } #ifndef QT_NO_CURSOR QApplication::restoreOverrideCursor(); #endif …
It is something of a good and bad news day for mobile phone giant Nokia. On the same day that it announces shipping of the new N900 handset, based on the open source Maemo 5 software, Nokia is also recalling a staggering 14 million mobile phone chargers due to concerns …
Howdy, I am creating a GUI in QT 4.5.3. I am having a problem trying to create a new subclass of QWidget. I already have several (3) other subclasses of QWidget, but when I attempt to add an additional one, the code does not compile. Here is the newClass: [CODE] …
Hello, I have a problem.How I must add QMainWindow to my code, because the error is: [COLOR="Red"]Exception in thread "main" java.lang.Error: Unresolved compilation problem: The method menuBar() is undefined for the type Calendar[/COLOR] [CODE]package Kalendarz; import com.trolltech.qt.gui.*; import com.trolltech.qt.core.*; import com.trolltech.qt.gui.QMenu; import com.trolltech.qt.gui.QAction; import com.trolltech.qt.gui.QApplication; import com.trolltech.qt.gui.QColor; import com.trolltech.qt.gui.QIcon; import …
Hello, I have a problem which is this: [CODE]private void setupEditor() { QFont font = new QFont(); font.setFamily("Lucida Console"); font.setFixedPitch(true); font.setPointSize(10); textEdit = new QTextEdit(); textEdit.setLineWrapMode(QTextEdit.LineWrapMode.NoWrap); textEdit.setFont(font); new Highlighter(textEdit.document()); new CodeEditor(textEdit.document()); } public class CodeEditor extends QPlainTextEdit { public CodeEditor(QTextDocument textDocument) // public CodeEditor() { lineNumberArea = new LineNumberArea(this); blockCountChanged.connect(this, …
Not sure this is the best place to post this: I'm an experienced C++ oop developer wanting to develop my own semi-complex website ( e.g. with very nice GUI and graphics in general). I've used Qt for C++ GUIs I'm a newbie to web development, and after researching languages, it …
Hello geeks, First of all thanks to the members of this forum for their active participation, contribution and willingness to help. Now i'm in need of your valuable suggestions for my project in python. 1) I want to have GUI interface in my project and now i'm using python 3.1.1. …
Hello guys, I have one question about Qt... I`m fairly new in Qt and... I create the application in Qt in Linux and now I want to make a version for Windows, but do not know how to do it. I have read and follow tutorials for cross-over compiling but …
What's the simplest way of being able to build Qt Applications using C++? notepad? specific IDE? HOW do I do it? Can someone PLEASE walk me through it. I found instructions online for integrating MS Visual C++ with Qt. I ended up taking 5-6 hours out of my time to …
Anyone have a clue what would cause the compiler to complain about static members and functions and virtual functions ? I've written a bunch of stuff with Qt in C++ without this problem. The only new thing is I've overrided a virtual function and created a few static data members …
Hello, I'm new to QT and I need a little help making a custom widget . Basically I need to subclass QTableWidgetItem and have it draw a translucent image with a set color in the background. In some cases the color in the back ground pulses (dark to bright) so …
If you’re looking for low-cost GUI-test automation for Java, Qt, Mac OS X and Web applications, here’s a product you might find useful. Have you heard of Squish? It’s an automated function-testing tool from [URL=http://www.froglogic.com/pg?id=Home]Froglogic[/URL]. Released today was Squish 3.4, adding support for the May release of Trolltech’s [URL=http://trolltech.com/company/press-center/Qt4PressRoom]Qt 4.4 …
Dear Pythoneers, I have been reading really good answers on this forum so I thought I'll give it a try and see whether someone can help me. What I want to do: "I want to embed Python in C++ and use Python's capabilities in order to create a expression evaluator" …
Please consider the below code. 1 #include <QApplication> 2 #include <QLabel> 3 int main(int argc, char *argv[]) 4 { 5 QApplication app(argc, argv); 6 QLabel *label = new QLabel("Hello Qt!"); 7 label->show(); 8 return app.exec(); 9 } Now, I'm abit doubtful about line 5. According to the book(from which I …
Hello All, I am a new user of c++. Until now I just worked on basic console applications. I have to develop a program which will be able read two images and open them in separate windows and do some geometric calculations background. Also this program should allow user to …
Sorry I am asking a beginners problem between professional discussion.But I realy confused witch one is better.qt, gtk, wx, opengl or one else.please guide me with a clear comparison. Thanks dears. Editor ... moved from Re: Python GUI Programming (rule is: ask question in regular forum)
Hi guys...I am starting with Qt and I have problems with configuring it. It write: "Start C:/Apps/Qt/demo/demo.exe... This proccess could not be started !" I am using Qt Creator 1.2.1 on Win XP SP2. In code: [CODE] #include <QApplication> int main( int argv, char* argc[]) { QApplication demo(argv,argc); return demo.exec(); …
Hi all I have some questions 1-Is an API just a set of functions that let you do sth easier that using the things that make up the API,directly?If yes so and API must be able to be compiled in every IDE but you can see that Qt's API needs …
I have this code being called by a QMainWindow: [code=c++] centralWidget()->currentWidget()->addSubWindow(new SubWindow()); [/code] the centralWidget is a QTabWidget the currentWidget is a QMdiWindow and I get the error: [icode] error: 'class QWidget' has no member named 'currentWidget' [/icode] please help
Hi - I've been spinning my wheels for days using Carbon.Qt to try and extract one frame from a quicktime movie, and save as a .jpg or .png or .gif to be used as a thumbnail. (You see, I have a load of quicktime movies that I'm uploading to a …
Hi everybody! I am a mechanical engineer trying to change career towards software development. Currently I am reading about design patterns and starting to build something in C++/Qt4 using the IDE QtCreator. I live in Toronto/Canada. Cheers, Joey
Hi guys! I am having a bit of difficulty trying to get to a 'timecode' track in a QuickTime file using the QTKit framework in Mac OSX 10.5 I am using XCode 3. I have a QTMovie object (set as self.movie) and I can get my python fingers into it …
Im currently doing a project in QT and when I compile my project with my header/source files that i created, I get this "error: expected constructor, destructor, or type conversion before ‘->’ token ". Essentially i've created my own classes outside of QT and my objects work fine etc but …
Hi every bod y I am new in programming and I like to start with pyqt but I can not find anything for learning in internet please help me how how can I write program with gt designer & when I make a form in qt how can it work(my …
Just a curious Question. What do you prefer, QT or wxWidgets? How do compare the two in terms of: 1. Nativity 2. Easiness to learn 3. Documentation 4. Weight (The size in MB) 5. Licencing 6. Any other factor(AOF) Thanks all!
Below I have a small portion of the code I have been writing for QT GUI. It is important for my design that I am able to use signals and slots within my GamePanel class, but for some reason it will not work there! When I click on the button …
Hello everybody, I’m experimenting with PyQt, trying to learn it, and I’m a bit stuck with Signals and Slots. I don’t usually like just to repeat the examples you find in tutorials and guides because I think it’s more useful for learning to experiment concepts by yourself. Tutorials usually teach …
hello everyone I am working on my application that deals with photos. well i have created my UI using Qt designer and converted it to python classes using pyuic4 but i am facing problem with the file dailoug where i can browse my directory and choose photos but i can't …
Hi all. I have just started using Qt, and i can't find any primer on how to connect my Sql Server2008 database. What are the steps that i need to make, so my database is connected with Qt. Additional info: I'm using Qt 4.4.3 open source on Windows XP and …
Hello Friends, I've to work with "Quicktime". But, I'm finding it quite difficult to find the resources which will help me in understanding the technology. Can you please suggest me any links which will help me in understanding Quicktime classes and methods, during my project building?
hello again, Ive got the basics under my belt and ready to start making things happen:D. I want to experiment with different things so could you show me to some good tutorials on some of the following things. 1. sending and receive messages through the internet-what library/Mod should i use? …
hi, I must do in Qt a "undo" ( QKeySequence::Undo ) but I don't know do this.Help me ex. [CODE] void MyWindow::Save () { QFile file (fileName); if (file.open (QFile::WriteOnly | QFile::Text)) { QTextStream out (&file); out << textEdit -> toPlainText (); statusBar() -> showMessage ("message",2000); } } [/CODE] but …
This is QT btw. I get the following error when i write "make" in the terminal window: [code]QObject::setParent: New parent must be in the same thread as the previous parent[/code] here's my headerfile: [code]#ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QDate> #include <QMainWindow> #include <QTableWidget> class QAction; class QLabel; class MainWindow : …
Hi, I have been trying to wrap my head around this problem for a while now and I just can't figure it out. I've included the code that is involved with the runtime error. Basically, I have a pointer that points to another pointer. Action points to an array of …
Hello, I've been pulling my hair out trying to figure out how to fix this. I don't have a lot of experience with OOP, so I'm at a bit of a dead end. I am getting an error: [QUOTE]error: expected class-name before '{' token[/QUOTE] The header file is this: [CODE]#ifndef …
Hey, I just recently ran into a problem compiling a C++ project (no, I didnt mean to put this in the C++ forum). I got an error saying that a certain header file couldn't be opened (I had compiled with the same file before). I looked up the error and …
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