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Questions tagged [qt4.6]

For issues relating to using the Qt framework, version 4.6.

Qt (pronounced officially as cute (/kyut/) though commonly pronounced as Q.T. (/ˈkyu ti/)) is a cross-platform application development framework widely used for the development of GUI programs (in which case it is known as a widget toolkit), and also used for developing non-GUI programs such as console tools and servers. wikipedia

Qt can be downloaded here.

Qt was created by Trolltech, and is currently developed and maintained by Digia.

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QCompleter Custom Completion Rules

I'm using Qt4.6 and I have a QComboBox with a QCompleter in it. The usual functionality is to provide completion hints (these can be in a dropdown rather than inline - which is my usage) based on a prefix. For example, given chicken soup chilli…
jcuenod
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Any good implementation of Qt + Lisp?

I was searching for a good Qt + Lisp implementation on the internet and couldn't find any. Most projects were closed down or so. Does anybody know of a good Common Lisp + Qt integration? Thanks in advance.
Daniel Higueras
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How can you edit a QTableView cell from a QTest unit test?

I'm writing a unit test for a custom Validator in a QTableView using the QTestLib framework. One of the most basic test cases could be described like this: Double click the table cell in the third column and the fourth row, and append the number…
Tim Meyer
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How to work with OpenGL and QT?

I'm Working on a small project and i need to work with OpenGL + QT I'm Newbie in both of them. So i need a good tutorial that illustrates how to work with them each other not individually is it better to work OpenGL on QT Creator or use QT Visual…
Amr Ramadan
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How to trigger the edit mode of an item in a QTableView?

I'm using QTableView and QStandardItemModel now. In the QTableView, if you double-click a cell, this cell will get into edit mode and you can edit its content. Now I have a problem, I want to trigger the edit mode of an item by code (by command),…
Claire Huang
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Where to control the QWizard button?

I'm using Qt, and I use a QWizard object which contains several pages. when it comes to a specific page, I want to hide the "Next" button first, and shows it after the user do something (such as clicking on a radiobutton...) I want to do some…
Claire Huang
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How to produce Capital hexadecimal digits with QString::arg() ? [QT]

I'm trying to create a QString which is a hexadecimal number with its letter digits in Capitals instead of small caps, how can it be done? QString( " %1" ).arg( 15, 1, 16 ) yields f and I'd like F
Petruza
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how to calculate qfont pixel size from point size

How do I convert my font on a QGraphicsObject from point size to pixel size? I need to do this so the fonts will look right when I print my QGraphicsScene using QGraphicsScene::render().
David Burson
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how to center a Qt mainform on the screen?

I've tried these in my mainform's constructor: QRect desktopRect = QApplication::desktop()->availableGeometry(this); move(desktopRect.center() - frameGeometry().center()); QRect desktopRect =…
David Burson
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How to use OpenGL functions on a QT OpenGL Widget?

I'm starting off QT 4.6's example "OpenGL - 2D painting" It uses a subclass of QGLWidget, and makes painting operations with the class QPainter. I'd like to know how to do drawing directly with OpenGL functions on the OpenGL Widget.
Petruza
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Reduce a table view's cell padding or margin

I'm using a Table View. I'd like to remove the cell padding (or margin) so I can squeeze more cells in less space. How can this be achieved? The cells size is set to 32 pixels on QT designer, if I set it smaller, the cells contents don't show and…
Petruza
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Qt4 expanding tabs in QTabBar

I am subclassing QTabWidget to add a QTabBar, who's tabs stretch over the whole width of the tabBar. Therefore I am setting the expanding property to true. This doesn't seem to change anything about the behavior of the tabs. Did anyone encounter the…
user636530
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QSpinBox buttons size

Is there a way to obtain the size of the buttons/arrows of a Qt QSpinBox? Note: This question has nothing to do with changing the style of a QSpinBox. On the contrary: The intent is to use the QSpinBox style as given and obtain at runtime the size…
user674263
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how to print a QGraphicsScene that has text and graphics

I have a QGraphicsScene that has graphics as well as text drawn on it. When I try to print, the graphics are fine, but the text is using a font size defined in points, so scene->render() when I pass it a QPainter initialized with a QPrinter, has…
David Burson
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Hook key & key combinations from keyboard with Qt 4.6

Let's say I have a window-less application which has only an icon on the Taskbar (Windows, Mac OS X & Linux). I want it to capture some key & key combinations, let's say Right Control + Right Shift. Upon keying in correct, combination, it will do…
Viet
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