One important thing omitted in the list of changes

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One important thing omitted in the list of changes
by Benoit Minisini on Tuesday 06/May/2008, @14:08

...is that Qt 4.4 draws things _faster_ than Qt 4.3.4!

I recently ported Gambas GUI component to Qt 4.3.4. On my Core Duo with Linux (Mandriva 2008.1) and a NVIDIA 8300 GS graphic card, the Gambas IDE is almost unusable. Drawing and resizing are as slow as GTK+!

Then I downloaded Qt 4.4 RC1, and compare the demos and examples: at first glance, drawing is now twice faster, maybe faster than Qt 3. But using OpenGL for drawing does not work at all.

Of course, these are completely subjective tests.

But now I am happy, I will be able to finally use Qt 4 with Gambas! :-)

Related Links

·   Articles on Qt
·   Also by Benoit Minisini
·   Contact author

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Re: One important thing omitted in the list of changes
by txf on Tuesday 06/May/2008, @15:03

I believe that Qt slowness is derived partially from your nvidia card. People with certain Intel cards did not seem to have problems in Qt 4.3 ...

so basically it means that Qt 4.4 is fast in spite of Nvidia?

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Re: One important thing omitted in the list of cha
by Ian Monroe on Wednesday 07/May/2008, @06:52

My guess is that credit goes to "Alien": now Qt applications appear to X as one big widget, so like resizing operations especially should be faster.

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