<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[displaying and applying transformation matrix to shapes]]></title><description><![CDATA[<p dir="auto">Hello,<br />
I have an existing GUI, to which I would like to add a circle, to which I shall apply a transformation matrix and change its location, based on user input.<br />
How can this be done?<br />
After some searching, I seem to be able to do this by creating a widget, in which I define a painter, draw a circle in it  and apply a QMatrix to the painted area.<br />
The problem is that this takes effect on widget.show(), which creates a new window, while I want to embed the image in an existing window.<br />
How can this be done?<br />
Is there a better way of doing this?<br />
Thanks!</p>
]]></description><link>https://forum.qt.io/topic/110733/displaying-and-applying-transformation-matrix-to-shapes</link><generator>RSS for Node</generator><lastBuildDate>Mon, 12 Oct 2026 09:33:37 GMT</lastBuildDate><atom:link href="https://forum.qt.io/topic/110733.rss" rel="self" type="application/rss+xml"/><pubDate>Thu, 16 Jan 2020 18:29:43 GMT</pubDate><ttl>60</ttl></channel></rss>