Posts Tagged ‘Qt’

Qt eLearning

February 16th, 2010 No comments

Qt eLearning solutions provide audio and multimedia-based content to enhance your Qt skill set and expand your ways of learning beyond Qt documentation, books and classroom training.

Technical Sessions (Developer Days 2009)

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Qt Smart Pointers

February 7th, 2010 No comments

Qt Creator reference card

January 21st, 2010 No comments

The QT Creator reference card is a handy reference designed to assist your use of Qt Creator. It is available in Windows/Linux as well as Mac versions and for ease of printing comes in A4 and US letter formats.

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Optimizing Performance in Qt-Based Applications

December 13th, 2009 No comments

Video of this presentation (3 parts) will give you a brief overview of performance improvements done in Qt

Performance is a key component of usability and crucial for the user experience, especially in today’s modern user interfaces where graphical elements are being animated and transitioned. Bringing Qt Everywhere means a significant need for speed across desktop and embedded platforms. This presentation will give you a brief overview of performance improvements done in Qt, and will be highly interactive with hands-on sessions on how to squeeze every last drop of performance out of your Qt application.



December 5th, 2009 No comments

The QGraphicsAnchorLayout is a very flexible layout, yet the concept is simple. By creating an anchor between two edges of two layout items you are giving the anchor layout a constraint to fulfill. In the simplest case you are just saying that the distance between the two layout edges should be a fixed distance. You can do this with the left, right, top, bottom and the “center edges” of any layout item. You can also have an edge that has several anchors connected to it. This is not possible with linear layout and it is partly possible with a grid layout. This allows you to build up the structure the layout should have. The layout will then try to fulfill the constraints you have given it by potentially growing or shrinking the layout items. You can also configure each anchor to grow or shrink if that is preferred.

Anchor layout joins the family of QGraphicsLayout



December 1st, 2009 No comments

Qt Assistant: Indicates that the widget contents are north-west aligned and static. On resize, such a widget will receive paint events only for parts of itself that are newly visible. This flag is set or cleared by the widget’s author. (Link)

But also it prevents to avoid flicking during resizing.

The demo demonstrates the effect of setting the Qt::WA_StaticContents attribute on any widget in Qt 4.5

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Qtitan Multimedia library

November 12th, 2009 No comments

The Qtitan Multimedia library adds various multimedia technologies, such as Adobe Flash, Adobe Reader and Microsoft Silverlight, to applications designed using Qt framework. Qtitan Multimedia integrates with the Qt Designer form designer, simplifying the addition of new objects and speeding up the design process. Qtitan Multimedia is just what programmers need to create applications with big possibilities for multimedia.

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Parallel Programming

October 22nd, 2009 No comments

Qt State Machine Overview

September 24th, 2009 No comments

QtCreator and language IDE

September 21st, 2009 No comments

QtCreator uses default user settings to determine IDE language. To change language IDE preferences you need to set  LANG variable to en_US value, for example.

It can be achieved by:

  • set this variable into Environment Variables section (Start menu -> “Control Panel” -> “System Properties” -> “Advanced”)
  • add “set LANG=en_US” command into qtenv.bat file (Qt\2009.05\bin directory) and run QtCreator from command prompt:
    Qt\2009.05\bin > qtenv.bat
    Qt\2009.05\bin > QtCreator.exe
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