Tag Archive: qt

Jul 10

Continue using QPointer

Early in the Qt 5 development cycle, we had made the decision to deprecate QPointer and replace it with the more modern QWeakPointer. That decision is now reversed, so please continue using QPointer where you were using them. Moreover, don’t use QWeakPointer except in conjunction with QSharedPointer. To understand the reason behind this back and …

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Jun 13

AVX-optimised raster painting for Windows too

Yesterday, one of my contributions to Qt was merged which finally adds better support for optimised raster painting on Windows, with SSE2 and AVX instructions. This feature has long been present on the Unix systems, but it was somewhat lacking on Windows. If you’ve read my past blogs, you know I often talk about and …

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May 18

I’m going to Akademy and the Qt Contributor Summit

Just a quick post so I can say I’m going to both events: Akademy 2012 and the Qt Contributors Summit 2012. I hope to see many of you there, and we have a lot to discuss and work on.

May 11

Source code must be UTF-8 and QString wants it

I’ve talked about source code encoding in the past, arguing that the C++ language lacks a fundamental setting. However, since this Monday, Qt 5 now starts to enforce that source code must be UTF-8. In a way. The commit that landed on the qtbase repository finally changed the codec used by QString’s 8-bit methods to …

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Apr 30

Quick update to the Qt Project statistics

Update on last Friday’s post on the Qt Project’s statistics: the script ran again this morning, so we now have data for last week. The Qt Project Statistics Page now includes the number of contributors per week: Visit the statistics page for more graphs.

Apr 27

Qt Project Statistics

For about a month, I’ve been improving a set of scirpts to calculate statistics on the Qt Project. What I wanted to know, at first, was how well I was doing, how much I was contributing. Another question I had in mind and I know many others did too was “how much is the Qt …

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Apr 03

Qt 5 alpha released

Lars writes to let us know that the first (and hopefully only) Qt 5 alpha has been released! It’s the first in the major release series in 7 years, the first major release of the Qt Project (though not the first release in of the project, since we released 4.8.1 just a few weeks ago). …

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Feb 22

The value of passing by value

I’ve written in the past about how passing certain types by value in C++ would be more efficient than passing by constant reference. But it turns out that the ABI rules are somewhat more complex than what I said back in 2008. Time to investigate. This is also prompted by the discussion on qreal on …

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Jan 13

Qt temperatures drop from January to June

I’ve previously talked about how the Qt 5 Winter is coming. Since we started talking about that, people have begun asking what are the date limits for each thing, when the API would freeze, when Qt 5.0 would be stable, when we’d release, etc. This blog tries to answer that a little. Last month, we …

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Dec 22

Winter is coming

Winter is also coming for Qt 5.0: we are approaching feature freeze. The exact date, I can’t tell you, because we don’t know yet. That’s actually the subject of this blog: we need to find a date and I need your help to get there.

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