[qt] Forum Topics

Hello Everyone , I'am new to OOP and QT and i'm trying to write a simple chat program (client , server) with winsockets. I Have an error which i don't seem to understand : this is my code so far : [CODE] #include "pmessenger.h" #include "ui_pmessenger.h" #include <QMessageBox> #include <winsock2.h> …

Hi, thanks for choosing to help me. I want to do a simple music player, you know, the slider with the seconds you're on, play/pause, stop, open file, show recent files,about and exit. I tried QT's Phonon, but it isn't working, I get a lot of errors trying to compile …

I compiled a HelloWorld example using QtJambi. But on running it, it said "[B]failed to unpack native libraries[/B]. The complete error was : [CODE]daud@daud-laptop:~$ java -d32 com.trolltech.examples.tutorial.HelloWorld Exception in thread "main" java.lang.ExceptionInInitializerError at com.trolltech.qt.QtJambiObject.<clinit>(QtJambiObject.java:60) at com.trolltech.examples.tutorial.HelloWorld.main(HelloWorld.java:58) Caused by: java.lang.RuntimeException: Loading library failed, progress so far: Unpacking .jar file: 'qtjambi-linux32-gcc-4.6.3.jar' Checking …

Hello, I am trying to read the raw interrupts from a USB mouse (Installed and functional) in a C++ application. I have read over LibUSB and WinUSB but WinUSB does not seem to play nice in Qt and LibUSB seems overcomplicated for what should be a simple task. I do …

hello I need help with loading pages that have flash applications in them, my program works for just html pages, would anyone with qt knowledge plz help. TIA. here is my code: [code=c]#include <QApplication> #include <QWebView> #include <QUrl> #include <QWebSettings> int main(int argc, char *argv[]) { QApplication a(argc, argv); //QWebSettings::globalSettings()->setAttribute(QWebSettings::PluginsEnabled, …

Hi, I have a code design problem: I have several classes *MainWindow - holds 2 widgets, a QTableView Widget and a QTabWidget *TabLayout - layout of the tab, comboboxes etc. Creates an instance of TabCode and connects its signals to it. *VideoTab - contains the slots. Slots are called whenever …

Hi all, Im new to this website, and mostly to any type of programming. Recently Im trying to learn C++(Game Programming), and my father wants me to make him a web-based application, that flashes the window wether there is any sound playing(I believe it's called an audio visualization), I talked …

Guys I need help am using fedora 13 KDE desktop I want to install Qscintilla and its pyqt4 wrapper when a run [CODE]qmake qscintilla.pro [/CODE] I get an error message.........(bash: qmake command not found) thanxs

Hello I'm currently working on a program which read 16bit(565) BMP files. I've tried hard to read them with pyQt and show them directly but it never worked properly, the image were not read properly even with the good format as argument. So I've decided to call a wx App …

Applications like browsers, etc. are written in Java, Python, etc. But when they are installed on a system that doesn't have Java or Python installed, how does it ensure that its code runs there ? Actually, I wanted to write a browser in Java with WebKit as engine. Since the …

Can anyone tell me how to compile "mingw-util 0.3"? I am a little confused, when some article says "use make command and it is all done".But "make" command in unknown in my command prompt.I have MinGW installed which comes with codeblocks. I need it to compile MySQL driver, to use …

Hi, I'm currently writing an application using VS C++, Qt, and SQLite. I have a user interface where the user uses a series of combo boxes to select certain criteria that they want to fetch from the database. When this dialog closes, all of the combo boxes selected text (string …

hellow every body i m trying to do a graphique interface using c++ but i cant know which .dll i have to use such im using visual studio c++ 2010 express edition . when i thank to use QT with vs2010 there is a lot of problemes caus i don't …

Hii I am have suffering few problems in doing following assignment , please help me... Qtprogram using python to calculate addition, subtraction. please help me ...i am new python

Hi all! I am programming in Qt and I am trying to draw a line on the screen, but it fails. My header file: [CODE]#ifndef GAMEAREA_H #define GAMEAREA_H #include <QWidget> #include <QPainter> #include "character.h" class GameArea : public QWidget { public: GameArea(); QSize sizeHint() const; protected: void paintEvent(QPaintEvent *event); private: …

Hi All I'm using the QClipboard class provided by Qt. I'm trying to create a QList that holds the last twenty items that have been copied. I am declaring the list as follows: [CODE] QList<const QMimeData*> *copiedList; [/CODE] I am creating the list as follows: [CODE] copiedList = new QList<const …

Hi I have been trying to install the ERIC python IDE [url]http://www.die-offenbachs.de/eric/eric-links.html[/url] for a while now to no sucess. I could not i kept getting errors when installing the QT module [code] Determining the layout of your Qt installation... Error: Make sure you have a working Qt v4 qmake on …

Hi All I'm using SetWindowsHookEx to hook the keyboard. The connection is made and I am able to trap key presses. I'm also trying to call GetKeyboardState to obtain the state of the other keys at the time of the key press (to identify if shift, ctrl etc is pressed). …

hello I want too choose among c++ + qt + php and java for my programming language and platform please help me too choose best platform I want to choose a platform that has this features : speed, portable I am c++ programmer and familiar with java programming language i …

Hello, I have come across a compile error, which should have a very simple solution, but I cannot figure it out. I am fairly new to programming and am still getting used to OOP. I am trying to call a function from another class. The class seems to work but …

What's Up? I can't seem to post this in the PyQt section (No post new thread button) Anyway I've started using PyQT to design a UI for my python script, I've googled around for ages and racked by brain, But to no avail, Nothing I've found is specificy tailored to …

Hi friends, i want to make a gui using perl qt, any one have any useful links plz send me. faithfully

Here is my issue: I have a program, that downloads roms off the internet. Everything works fine, but I would like to show an indefinite progress bar while it is downloading. I have that with the following code: [code] # -*- coding: utf-8 -*- # Form implementation generated from reading …

Hi everybody have not posted in a while. In all truth i am stuck but very close to finding the collision answer. Note 1 (Most of this skelton was premade for the assignment). Some variables i don;t even know what they do like Vy1. Incx, Incy. Stuff like the file …

Hi, In my application I have two object type. One is field item, other is composite item. Composite items may contain two or more field items. Here is my composite item implementation. [CODE] #include "compositeitem.h" CompositeItem::CompositeItem(QString id,QList<FieldItem *> _children) { children = _children; } CompositeItem::~CompositeItem() { } QRectF CompositeItem::boundingRect() const …

Hi everyone I have system that has classes derived from QGraphicsWidget. I manage derived class objects in layouts on QGraphicsScene. Now I need a compound item that contain two or more QGraphicsWidget in it and also I need to put that item inside my layout. So I choose QGraphicsItemGroup and …

Hi All, I have a small company which is studying the posibilty to create a freeware opensource Visual Basic IDE, built in QT/C++ for running under linux and generating object code and assembler code in a easy way. So to start, I was wondering if anyone have a Visual Basic …

Hello Friends, I'm using PyQt 4.9... I want to have an IDE with code completion to work with Python and PyQt (since we are storing both the codes in a single file with .py extension).. Once i've tested eclipse and pydev plugin.. It was pretty good to work with.. Shall …

Hi, I have been working on a Reversi/Othello game using QT and have got stuck when trying to implement a new game function which will return the game state back to its original state. reversigame.cpp [CODE]/** @file reversigame.cpp @author Rob Charrett @brief ReversiGame implementation. */ #include "reversigame.h" ReversiGame::ReversiGame(QWidget *parent, Qt::WFlags …

In linux Qt use “ksystemtray.h” for developing program. Anyone know which header file equal to “ksystemtray.h” use in Windows (mingW). Thanks Advance:)

How integrate .dll files in Qt4 c++. Any sample codes ?? Thanks Advance.

I am planning on starting a project during summer break. I am going to create a employee clock in system for my work place (and anywhere else that wants it.) I figured it'd be good to get some practical experience before I graduate. The actual structure of the program I …

Well, I am currently learning Qt and I develop on two systems, a Mac OSX 10.5 and Ubuntu. I decided to make a small app with the default template in QtCreator (Qt4 GUI app). I put some menubar entries, and the last entry "Exit" is separated by a separator. While …

hi... i need to automate my system.... for which i need to run a c++ program from a php function.. how cani do this plz help...!

I'm a newbie so please be patient... :) [CODE]def canvas(self): import qt self.setCaption('My Canvas') c = qtcanvas.QCanvas(self) # <- gives the canvas a parent QObject c.resize(315, 207) v = qtcanvas.QCanvasView(self) v.setGeometry(QRect(200,590,321,211)) lay = qt.QVBoxLayout(self) lay.addWidget(v) v.setCanvas(c) l = qtcanvas.QCanvasLine(c) l.setPen(qt.QPen(qt.Qt.black)) l.setPoints(10,10,390,390) l.show() v.show() c.update() l1 = qtcanvas.QCanvasLine(c) l1.setPen(qt.QPen(qt.Qt.red)) l1.setPoints(20,60,10,230) l1.show() …

I need a qtimer to trigger reading of a file line by line, I have the code working running with the timer trigger but qtimer will just read the first line over and over as it is now. Here is the code so far: self.lcdtimer = QTimer() self.connect(self.pushButton85,SIGNAL("clicked()"),self.update) self.connect(self.lcdtimer, SIGNAL("timeout()"), …

Hi all, This might be bit of a silly question, but it's stumped me now for over a day and I've scourged the net for info but haven't found anything to sort out what I should be doing. I am currently using Qt Creator 1.3.1 (Based on Qt 4.6.2 (32 …

Each time I create a new GUI, the bit that I always hate, is the bit where the buttons and entries look like I am working on a Windows 98 machine, isn't there a way to make my buttons and entries look like Qt would look like? They're well squary …

Hi! I have a program with two QSpinBoxes with integers in them. When user clicks one spinbox it should affect to the other one. And vice versa. I can't use valueChanged() signal because it causes an endless loop that won't stop until the maximum values of the boxes have been …

I am going to write a game with QT but i dont know how to start. Give me a tutorial for QT please.

Hi Pros! I've started a project called grina ( code name) which is web browser program fro people to view web pages using C++ with Qt based on the QtWebKit module. The fact is that, i know a little about the web browser system, that it acts like a compliers …

Hi forum! My name is Eduardo and I´m from Portugal. I´m a newbie to C++ and I hope to learn a lot with you I´m facing a doubt that I couldn´t solve yet. (I will also post this thread at c++ area, hope you don´t mind ) My doubt lies …

Could anyone tel me that how can I link two widgets in PyQt4. one more thing I want to know. I have created a tabbed view. How can I add the vcontents in a tabbed view?

Hello, I'm seeking a solution to how to keep text updated in windows forms, currently Im using QT forms, and trying to keep my labeltexts updated but always fails, tried infinite true here and there but program always crash=\

Hi all. Im developing a qt app to use on a wince device. I have compiled the OpenSource version of Qt for winCE, and it is working. My program compiles fine. However, if i have any slots defined in the header file, it throws the following linker error: moc_updatedialog.obj : …

I know the heading is a bit confusing.. what made me to put this question here is that :Recently i heard an article that [URL="http://lwn.net/Articles/69835/"]the rumours are true! GTK is LGPL, QT is GPL big difference[/URL] It means even if I create something with front end QT , I can't …

Hey, I have a problem, if checkboxes is activated, it could be download packages ( Ubuntu ), would be necessary to verify to checkboxes and if it's true, then these packages, which should installed my system ( Ubuntu ). [CODE]#!/usr/bin/python # -*- coding: utf-8 -*- # Copyright (C) 2010 from …

I downloaded the latest version in the repository and unless the tutorial im following is incorrect in the #include function then im lost. here is the code im trying to compile taken from the tutorial. [CODE] #include <QtGui> int main(int argc, char *argv[]) { QApplication app(argc, argv); QLabel label("Hello, world!"); …

Hey Everyone, I was just thinking it would be nice to have a forum dedicated to software development using Qt. I know IDE topics aren't really the goal of DaniWeb software development, but with the growing popularity of Qt I think it would be a move in the right direction. …

Hello I'm trying to use taglib in my Qt-program but it won't work. With this code, it doesn't compile although it should because I just changed the parameter [I]a[/I] from the example included with the source. [CODE]void Test(){ const char* a = std::string("song.mp3").c_str(); TagLib::FileRef f(a); }[/CODE] When I drop the …