qt

Resizing qt widgets when their children are hidden

I have the situation in the following image: How would I go about resizing the widget when the retry child is hidden so that it looks as in the first image? The main layout is a QVBoxLayout, the retry child is a widget with a QVBoxLayout as well. I've tried the following: update() updateGeometry() setGeometry(childrenRect()) layout...

CD burning using ICDBurn

hi i want to burn my audio files into CD. Is it possible to do programatically. I heard about ICDBurn. But not gettng that much idea when reading MSDN. I am from embedded domain. Can u give some help or sample program. I want to implement in VC++ or qt. ...

Qt: force resource reloading on every compilation.

Is there a way to force QtCreator to recompile all the resources (images / qss files) i have specified in my qrc file every time i build the project? Currently if i change some styles in my qss file but dont remove the file and re-add it to the qrc file the old version of my qss file is used. Thanks. ...

building a static version of QT Library

I would like to build a static version of QT Library for X11 like shown in the doc Deploying an Application on X11 Platforms but I am stuck at the first step. where it says : cd /path/to/Qt ./configure -static -prefix /path/to/Qt make sub-src 1) Where is the path/to/Qt. Is this a path to libs or executables or what? In /usr/bin...

Instruction for installing an environment with Qt and Qt integration with Visual Studio 2008.

I want to use Qt lib but I don't know how to install Visual Studio 2008+Qt+Qtintegration. I have read some forums, that step by step tell what to download, where to download from, and then what to do. But that was for old versions of mentiond products. I ask to Qt developers tell me the way to install these items on Windows. Any forum o...

Overloading the QDataStream << and >> operators for a user-defined type

I have a an object I'd like to be able to read and write to/from a QDataStream. The header is as follows: class Compound { public: Compound(QString, QPixmap*, Ui::MainWindow*); void saveCurrentInfo(); void restoreSavedInfo(QGraphicsScene*); void setImage(QPixmap*); QString getName(); private: QString name, hom...

Is there a more expressive way of executing SQL query using Qt?

I currently have this code: // Construct query QString const statement = QString("drop database if exists %1") .arg(databaseName_); QSqlQuery query(db); query.exec(statement); Is there a better way to code than the above? Specifically, I dont like how I use QString for SQL statement. It'd ...

How can I link glibc statically with qt

I have built a static version of qt and download a static version of glibc. Now I would like to link glibc statically to my qt application. I know about going into the .pro and adding the line LIBS += -L path/to/static_lib but I am wondering if these that is enough? Will it still link glibc statically even though the OS I am building...

Why do I get two clicked or released signals when using a custom slot for a QPushButton ?

here's the main code at first I thought is was the message box but setting a label instead has the same effect. #include <time.h> #include "ui_mainwindow.h" #include <QMessageBox> class MainWindow : public QWidget, private Ui::MainWindow { Q_OBJECT public: MainWindow(QWidget *parent = 0); void makeSum(void); ...

what is the oldest glib version that a qt 4.6 application can run with

I am trying to build a standalone qt application (built on ubuntu and deployed on Red Hat 5.3, both 64 bits) after building a qt application that is statically linked to the qt library I tried to run the program on red hat and got an error saying libc.so.6 was not found and that GLIBC_2.9 or GLIBC_2.10 is not installed and needed. I tr...

Verfiying the network connection using Qt 4.4

Hi, I have an application which runs a tool that requires network connection. Now my aim is to check whether the user has a network connection, if he don't have one, i can straight away display an error without proceeding further. If he has, he can continue working with my application. So my basic need is to check whether the user has a ...

how to set the item selection forcefully in Qt

Hi.. Can any one tell me how to set the item to be selected forcefully.. I tried this after adding items to list row.. QModelIndex index = mylistview->currentIndex(); mylistview ->setCurrentIndex(index); its not working.. index I am getting index (-1,-1).. can any one help me on this Thanks ...

Using Qt CSS to set own Q_PROPERTY(QFont)

Hi there. I'm using Qt 4.6.2 and i have problem with QCSS. I have own Q_PROPERTY(QFont myFont READ myFont SET setMyFont). I want to change it with QCSS but it doesn't work. I've tried using normal font syntax but it doesn't work. I've also tried few other combinations like: qproperty-myFont: font(serif 20 1 0) font(serif 20 bold) QFont(...

how to implement code completion in qt

i am writing an ide using qt (on c++) and i need to add auto completion feature to it so i want to know : how to do that (i am using qtPlainTextEdit) ? what the data structure i should use ? ...

How to copy QT folder to another folder without reinstalling it?

I have QT installed on disc D (on Windows). And I want to move it to disc C. Is it possible to do that? If I just copy QT folder from C to D then I see lot of errors when I compile my applications that use QT. Errors are because qmake.exe contains full paths to include, bin and libs folders inside. So, when I create solution for Visual...

Qt - How to use rich text in a QComboBox?

I am trying to use rich text in a QComboBox but it does not support it. Perhaps I should write a subclass? But I am unsure on what I would need to override as I have never done anything like this before. Please help. Thanks! ...

How to get tag parameter value with XQuery

For example i have this xml. I need to get value of parameter val of tag foo with id="two" <top> <sub id="one"> <foo id="two" val="bar" /> sometext </sub> </top> Whis this query (using Qt QXmlQuery): doc('test.xml')/top/sub[@id='one']/foo[@id='two']/<p>{@val}</p> I receive <p val="bar"/>, but I need only tex...

what is the mistake in my code

class myslot { public: Q_OBJECT myslot() { } ~myslot() { } typedef enum Emycars{volvo,benz,tata}cars; public slots: void hellowslot(myslot::cars); }; void myslot::hellowslot(myslot::cars cars1) { } class mysignal { public: Q_OBJECT public: mysigna...

Is it possible to add a menu bar to a widget

I would like to add a QMenuBar to a window of my program (not the QMainWindow) from QtDesigner but I do not see this widget in there and it seems the only way to do this from designer is to use a mainwindow. Would I absolutely need to create this QMenu by hand coding it. Is it possible/ok to instead add a QMainwindow that is actually d...

How can I update fontconfig to a newer version in Red Hat 5.3?

I want to update fontconfig to a newer version but it seems that the OS is still finding the old fontconfig and I need the newer version to build qt. How do I make Red Hat 5.3 see the newer version? I do not know if this helps but when I did a search for fontconfig I found some files in a folder called cache. When I do yum update it t...