I'm working on a small project and I need to use OpenGL and Qt. I'm a newbie with both libraries, so I need a good tutorial that illustrates how to use both of them together. Is it better to ...

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 lik...

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 ...

I've tried these in my mainform's constructor: QRect desktopRect = QApplication::desktop()->availableGeometry(this); move(desktopRect.center() - frameGeometry().center()); QRect desktopRect = ...

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 abou...

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 thi...

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 ...

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 cl...

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().

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 ...

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 tri...

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 + Rig...

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 Ope...

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 ...