Jesper K. Pedersen
292 results
Anchor Layout
9 January 2020
User interfaces are built by positioning controls on screen. While changing x/y coordinates works for individual items, it doesn't scale for entire interfaces. Layout managers automatically handle positioning and sizing. This video introduces Qt Quick's anchor layouts - the simplest yet most common system. Anchors "glue" element sides together, making it easy to place elements side-by-side or align within parents.
Binding Loops
9 January 2020
This video discusses the dreaded "binding loop detected" warning that comes from the QML engine. Sometimes, it's pretty clear that we have created a loop (property A depends on B, which depends on A) and we can easily fix our code. Some other times, especially when anchor layouts are involved, this is not so clear. Watch this video for an explanation of what is going wrong and how to fix it.
Colors and Gradients
9 January 2020
Qt Quick offers more than simple colored rectangles with "color: 'red'". This video demonstrates various color specification methods including HTML hex-strings and normalized RGB floating point values, plus creating gradients in Qt Quick for more sophisticated visual effects beyond basic solid colors.
Exercise: Understanding QML properties
31 October 2019
Qt Creator: How to Display Scope
31 October 2019
Understanding properties in detail
31 October 2019
A Short History of Qt
31 October 2019
Welcome and Introduction to Qt Quick
31 October 2019
The first in a video series that teaches the foundations of programming with Qt Quick / QML. The content is extracted from our highly rated "Introduction to QML" training course regularly taught around the world by KDAB engineers. This video shows how to recreate the famous "Hello World" example using Qt Quick and QML. You will learn how to actually go from a QML source file to having a standalone running executable, that indeed shows the "Hello World" text.
Qt Migrations Photon to Qt Migration
7 March 2015
http://www.kdab.com/wp-content/uploads/stories/photon_migration.mp4 The Photon to Qt migration framework helps you control the complexity and cost of the migration project. The framework consists of the following parts: a partial implementation of the Photon API in Qt, covering the most important use cases a library of Qt widgets as slot-in replacements for Photon widgets that do not exist […]
The Challenge Previously on this blog, we featured a series of articles about our QML-based presentation tool, SlideViewer. To quickly recap: SlideViewer is a presentation program that allows writing slides entirely in QML. There are situations in which the slide deck needs to be available in PDF format in addition to the QML source: For […]
Introduction At Qt developer Days in Berlin 2013 I had an Aha! moment. I saw a presentation written in QML rather than the usual Powerpoint/LibreOffice/Keynote. It wasn't that I did not imagine this was possible, rather the contrary, after all in KDAB we have more than 3000 slides on Qt-related topics, all written in .... […]
