389 Topics
Hi. I have made a simple testing program which I'll use in another program later. I create the items of the QListWidget through looping and now I want to make changes in one of the items of the list, which the user clicks. But when I call a fucntion to …
Hello, i started learn litle "Game-Developing", i download Tiled QT to create game map, but my question is, (Game will be in java) How i make my character go to specifically positions, i mean, in map are some walls and playrs must not go above the image... An idea is …
Hi guys. I am a bit confused among the following three functions. read() readAll() readLine() How do they work? I'll be really thankful to you all. Thanks alot for your precious time! Regards.
What does this statement mean "[B]These functions (read(), readline(), readAll()) read a line of ASCII characters from the device, [U]up to a maximum of maxSize - 1 bytes, stores the characters in data, and returns the number of bytes read[/U].[/B]" I have used readAll() and readLine() it returns all the …
I have designed a dialog in Qt designer and I want to use the name of each child widget for some coding in cpp file. But the names I have given to buttons etc in Qt designer are not working as pointer.More over their names in ui_[I]mydialogname[/I].h are not the …
Hi. I made a program and I write this code in order to make the window's size fixed. More over i am using a button to unhide some Groups on main window, But when i compile program, it crashes but when I comment out this line of code the program …
Hi guys I have been wondering can we develop android apps on Qt? Do we have to learn Java inorder to program for android in Qt or All the programming will be done in C++. Actually I don't want to learn Java any recent because I am working on someother …
what does the following code means in Qt programming.. QDialogButtonBox::Ok why are we using QDialogButtonBox:: .
I need to write a program in QT4 that converts the value entered by the user to Celsius or to Fahrenheit The temperatue.cpp: I need to write a program that converts celcius to fahrenheit and vice versa the temperature.cpp is: #include "temperature.h" //constructor Temperature::Temperature() { //{initializes and places widgets using …
Hi Guys! I'm new to the forum and I have a doubt. Who can help me, I thank you. This is a simple GUI .. formed by a simple table. How do I connect to a database file. Db so that is shown in table QtGui? I'm using SQLite in …
Hello. I compiled a basic GUI example written with Qt. When I run with valgrind, it tells that there is memory leak. It is stranger, because at each time I run the app, the number of malloc calls are different. Qt seems nondeterministic. [CODE] #include <QApplication> #include <QPushButton> int main(int …
I was dragging and dropping flv files onto this bat file so I could watch in fullscreen on my second monitor:[CODE]set vlcPath="C:\Program Files\VideoLAN\VLC\vlc.exe" %vlcPath% %1 --video-x=1366 --video-y=768 --width=300 --height=300 --fullscreen --no-video-title-show --no-embedded-video --no-qt-fs-controller[/CODE] but would rather write a batch file with a menu so I could simply select the video …
Hi, I've currently got a dilema. I'm aware that from within a C++ program, you can use return values to get data from a function, but I am currently developing a Qt program, and at the moment I have 2 GUI's: 1- Main Window 2- Dialog The main window calls …
Ive been trying to code a GUI application in qt but im having trouble trying to get a button work. homewindow.h: [CODE]#ifndef HOMEWINDOW_H #define HOMEWINDOW_H #include <QWidget> class homeWindow : public QWidget { Q_OBJECT public: homeWindow(); ~homeWindow(); void init(); private slots: int when(); private: QWidget *aWidget; }; #endif // HOMEWINDOW_H[/CODE] …
i finally started having a look at gui yesterday, and tried to do some things with PySide, however i have the following problem; Whats wrong with this code? [CODE] !/usr/bin/python # -*- coding: utf-8 -*- import sys from PySide.QtCore import * from PySide.QtGui import * class Form(QDialog): def __init__(self, parent=None): …
Hi everybody, i need your help choosing the best library for making GUI applications in c++ I dont want to use Visual c++. Please advise me. And where to download Qt ? Where to put the headers in order to use them ??? Note : I am using Netbeans with …
Hi all, I'm currently developing an application in QT, and using QML for the user interface. Using QDeclarativeView I am able to create custom objects and access their members from within QML (using the below code), however I am stuck when I want to access the methods from just within …
i want to Display my QTableView insid QTextEdit ? can i do this thing ?? if i can how i can do it ?
Hi everyone ! i havent posted in a while i guess i just took a break O.o But i am having a problem i designed a UI in qt designer and then did [CODE]pyuic4 -x backup.ui -o backup.py[/CODE] That worked perfectly i can execute it and i have a nice …
I am making a application for maping some keyboard shortcuts to some event. So, i need detecting the keyboard shortcuts pressed after clicking a button. For Example, i have a button having text on it "change". When i click on it text on it changes to "press keys" then i …
[B]Hello , I'm new here as I'm new in python.. :D I need help in viewing database's data ,[B][U] I could view data in python[/U][/B] but i need to view it in GUI . [B][COLOR="Red"]i'm using:[/COLOR] - Qt designer - pysqlite[/B] Thank you all :)[/B]
Hello everyone! I am Pat, I am currently 16 years old and I've been programming for 4 years. I started with PHP, then Python, then Ruby and currently I am programming in C++ with the awesome Qt framework ;). I hope to learn some new stuff here and meet like-minded …
I am a web developer and this is my first time doing coding for desktop program. I am looking for a software development tool to use for c++ which include GUI and be able to pack up and run on windows after I have finished written the program. This software …
i was working on a project to send sms through my cellphone connected to my usb, but i did it on java with the comm library and on windows, now im working on ubuntu with c++, but i dont find any library that i could use to communicate with the …
Hey, I am doing my Final Year Project on NLP - something along IBM's Deep QA Project. [URL="http://en.wikipedia.org/wiki/Watson_(computer)"]http://en.wikipedia.org/wiki/Watson_(computer)[/URL] I would like to know what will be a good IDE to work on. My parameters for a good IDE in this project would be : 1)Good API's for Speech to Text …
Hi, I started with C++ development recently, and I think I'm ready to start building GUIs for my apps. I'm thinking about using Qt, since it is the most popular C++ GUI library, but the licensing is really confusing, and there isn't a lawyer nearby that understands software licensing who …
I'm running Mac OS X Lion on my 64-bit MacBook, and I can't run any of the QT Jambi applications I create. Here's the code of the test program I'm trying to deploy. [CODE]import com.trolltech.qt.gui.QApplication; import com.trolltech.qt.gui.QPushButton; public class GUI { public static void main(String[] args) { QApplication.initialize(args); QPushButton b …
i have this 2 custome modules and when i try to call module turtle i get an error message and i dont know what it means or better said i dont know where seems to be a problem. i think it should work just fine this is the message i …
Hi all, i'm writing a Qt SIGNAL/SLOT capable class in order to be able to work with raw socket in a Qt application. To achieve this, i'm using a QSocketNotifier to monitor socket incoming data event in a S/S way. Now the problem: entering the event loop, causes the process …
Hello altogether, I am supposed to work through a project written in C++ and QT for Windows platforms. Now I am not an expert in window-related stuff. I installed MinGW 3.4.5 and QTSDK on Win XP SP3. I am using the tool "qmake" to create a makefile with all dependecies …
Hi there everyone, I really hope someone can help me, I am working with Visual C++ with QT libraries and using... well... something that represents MVC (long story)... now I need to pass a const QString& from my 1 controller class to the model of another class... When doing so …
hello people, I have got a problem. I have written a program to simulate round robin scheduling program using visual c++ , version 6.0. Now, I want to add some simple graphics in my code so that a graphical representation of RR scheduling can be made. But, I don't know …
Can QT be used in creating an application for Nokia N90? If yes, Which would be better to use, Symbian C++ or QT? Thanks!
Hello to everyone. I'm trying to write a piece of C++/Qt code and I always seem to get stuck at the same thing. I'm creating a DAQ System for my MSc thesis, who's purpose is to present and get some variables from the user interface (class name Interface) and when …
I'm having a problem on try again program.I checked the syntax and yet is still not working.am trying to make a program that will output the student's grade and when the program is finished it will ask whether to try again or not.If the input is y or Y, the …
My code for the calculator is: calculator.h [CODE]#ifndef CALCULATOR_H #define CALCULATOR_H #include <QWidget> #include <QGridLayout> #include <QLineEdit> #include <QLabel> #include <QPushButton> #include <QLCDNumber> #include <QString> #include <QMessageBox> #include <QErrorMessage> class Calculator : public QWidget { Q_OBJECT public: //constructor Calculator(); public slots: //function to add the two numbers that the user …
I recently stumbled upon a boost installer (which I think is awesome), here [url]http://www.boostpro.com/download/[/url] and I was wondering if there is anything similar for QT and Visual Studio 2010? On the QT Website I found this page, but no VS2010 installer. Will the 2008 one work ? [url]http://qt.nokia.com/downloads[/url] I suppose …
[CODE=c++] #include <QtGui> class MaskedLabel : public QLabel { protected: void resizeEvent(QResizeEvent* event) { QLabel::resizeEvent(event); QPixmap pixmap(size()); pixmap.fill(Qt::transparent); QPainter::setRedirected(this, &pixmap); QPaintEvent pe(rect()); paintEvent(&pe); QPainter::restoreRedirected(this); setMask(pixmap.mask()); } }; int main(int argc, char* argv[]) { QApplication a(argc, argv); QLabel* label = new MaskedLabel(); label->setText("Qt Centre!"); QFont font = label->font(); font.setPointSize(72); label->setFont(font); label->show(); …
Hi. I have a very very easy problem in my program. The problem is that i want to load another page via press a button. It till work like any webbrowser. First och gonna write in the URL in a textbox, then press a button named Go or Enter or …
Ok, in a very simplified version ive got to write a C++ app to interface with a joystick and play various sounds depending on its position - Its a USB joystick and I will have a QT GUI. This app already exists, for Windows/C# . I just need help porting …
I literally hate to ask this question but I am having trouble with Qt 4 basically all I am trying to do is clear the textEdit area with clear() but I am not sure of what to do. In C++ I would just [CODE]textEdit->clear();[/CODE] and it would do so. I …
i am using QT software in solaris, i opened remote system through QFtp methods i.e.. connectToHost() after that, loged in through login(). now my problem is, i am trying to get data from remote system, through int get ( const QString & file, QIODevice * dev = 0 ) at …
Hello, I would like to use the QT LGPL version with my software, but I'm really not sure what I'm allowed to do with it. The license is very confusing. I'm hoping I can dynamically link to some QT DLLs and use them without too much GNU-tape. What other requirements …
Greetings, I'm using PyQt4 and trying to add a QGraphicsItem exactly in the center of the current screen, by clicking a menu button. So each click will add an item in the center of my screen. My QGraphicsScene is very large (10k X 10K), so the QGraphicsView cannot show it …
Hi everyone, I am trying to create Tag Extractor which is much like Twitter's Trending topics or Google's Top searchwords. Input file consists of a collection of some 3000 tweets. Problem 1: I am using "Qt" as the front end.(Entirely newbie to qt). Using two "List View" controls. one loads …
I noticed that the main.cpp in a Qt application has to contain the following line: QApplication app(argc, argv). I know that argc is the number of command-line arguments, and argv is that array list of command-line arguments. But, the question in my mind is: what are those arguments I'm passing …
I have the following `main.cpp` file: [CODE] #include <QApplication> #include "ui_checkabder.h" #include <QDialog> int main(int argc, char *argv[]) { QApplication app(argc, argv); Ui::CheckAbder ui; QDialog *dialog = new QDialog; ui.setupUi(dialog); dialog->show(); return app.exec(); }[/CODE] And, get the following errors when trying to run the program: [CODE] C:/Users/avbder/Desktop/abder/main.cpp:7: error: 'CheckAbder' is …
When I try running a Qt application with the following main.cpp file: [code] #include <QApplication> #include "ui_checkabder.h" #include <QDialog> int main(int argc, char *argv[]) { QApplication app(argc, argv); Ui::CheckAbder ui; QDialog *dialog = new QDialog; ui.setupUi(dialog); dialog->show(); return app.exec(); } [/code] I get the following errors: c:/QtSDK/Desktop/Qt/4.7.3/mingw/lib/libqtmaind.a(qtmain_win.o):-1: In function `WinMain@16': …
Nokia announced two new Symbian devices, the Nokia E6 and the Nokia X7. With the new smart phones, Nokia also introduced its latest software update, known as Symbian Anna. For details on the news check this: [URL="http://blogs.forum.nokia.com/blog/nokia-developer-news/2011/04/12/symbian-anna-software-and-2-new-devices"][U]http://blogs.forum.nokia.com/blog/nokia-developer-news/2011/04/12/symbian-anna-software-and-2-new-devices[/U][/URL] These devices also power apps developed with Qt, thus the business opportunity with …
just have those questions about those code sinppets from the C++ GUI Programming with Qt 4 book: GoToCellDialog::GoToCellDialog(QWidget *parent):QDialog(parent) Does that mean we are inheriting QDialog(parent)? Or, what exactly does this mean? setupUi(this); Here, this code snippet is part of the gotocelldialog.cpp file, which is the implementation of gotocelldialog.h header …
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