Qt video tutorials on YouTube

tbscope

A note about video 48.

At the end you say that QThread is not meant to be used with signals and slots. That's not true, a QThread can use signals and slots without any problem.

The problem is thread affinity. Although the documentation is correct and you can in general circumstances subclass QThread and implement the run() function, this will not work easily with signals and slots across threads.

If you define signals and slots inside the QThread subclass, they are called from the main thread context, not the new thread you created.

Maybe it is better to understand that QThread is NOT a new thread in itself. QThread is just a manager for one new thread. The QThread object itself lives in the thread it is created in (the main thread for example).

rootshell

[quote author="tbscope" date="1297435387"]A note about video 48.

At the end you say that QThread is not meant to be used with signals and slots. That's not true, a QThread can use signals and slots without any problem.

The problem is thread affinity. Although the documentation is correct and you can in general circumstances subclass QThread and implement the run() function, this will not work easily with signals and slots across threads.

If you define signals and slots inside the QThread subclass, they are called from the main thread context, not the new thread you created.

Maybe it is better to understand that QThread is NOT a new thread in itself. QThread is just a manager for one new thread. The QThread object itself lives in the thread it is created in (the main thread for example).[/quote]

Very good explanation - thank you!

saidiahd

Good initiative rootshell , it's very nice
i will show them to my colleague in university :)
thank you

qtrahul

Is there any facility available for searching with common name we can find all qt related videos in youtube.

For example If I search TED videos, then I can find all videos under TED, with just TED search.

Like wise If I search qtbynokia I suppose should find all videos related to Qt.

Thanks,

Rahul

rootshell

[quote author="qtrahul" date="1300803369"]Is there any facility available for searching with common name we can find all qt related videos in youtube. For example If I search TED videos, then I can find all videos under TED, with just TED search. Like wise If I search qtbynokia I suppose should find all videos related to Qt. Thanks, Rahul [/quote]

That...would be awesome!

rootshell

I added the tutorials and all the source code I have to my web site, "Voidrealms.com":http://www.voidrealms.com

Also added the ability to search :)

anandprabhu

Amazing work rootshell :) a great website for the beginners of C++ and Qt !

xavysp

Wow great!!! rooshell :-)
congratulations!!!
I have one video in spanish about (Hello World = Hola Mundo) in Qt Creator:
http://www.youtube.com/watch?v=m2ws7cnRB5Q

I'm thinking about making another video

Robbin

Lol, man, I've been following your videos and they helped me more or less to understand what a great framework Qt is and got me involved in all I did so far. I even visited your site several times, to look for updates there, as I found it easier at some point. But man! Stop speaking about your "gaming keyboard", lol. Other then that - great work!!!!!

rootshell

but that keyboard is awesome for gamming!!!

Hoping to hit 100 Qt videos by teh end of summer, but I have things to do with work.

Applied for the Qt ambasador, not word back but I remain optimistic.

mgran

Made this post a "sticky" since rootshell is pure awesome.

HerpaMoTeH

Rootshell thanks a lot for the good videos :) I'm a complete newbie in the programming with GUI (I have only programmed online systems with PHP) and your videos helped me understand a lot of things :)

john_god

I just found about this videos, I'm impressed. Congratulations rootshell, they are very nice !!!

qtqtqtqtqtqt

Wow these videos are excellent! Thanks for taking the time to make them.

Eddy

That's a good idea. Thanks!

Maybe you could add this as a wiki page?

2 more to go and voidrealms hits the 100!

Eddy

Great, thanks,

You could put a link here and everybody will follow you ;)

ZapB

Out of interest what tools do you use to record these videos please?

raja26

I have checked out your videos, they are excellent source of learning for beginners. I should probably do something like this just to give back something to the community.

ShadowMoses

I have watched quite a few of these videos and just would like to say thank you for all your efforts in making them. Keep up the great work.

Tslv

@rootshell thanks for your tutorials. They are great.
I too have had problems on finding good learning material for starting Qt for Symbian development. That is why I have decide to create few videos that deal with that subject. Currently there is only Hello world app explained. Any advice to would be appreciated. I am not a native speaker so I have provided subtitles. You can find videos here:

Channel
https://www.youtube.com/user/MobileDevVT/videos

Hello World for Symbian^3 with Qt Quick components done using Qt Creator
http://youtu.be/JnCAlHmhF_k

Qt HelloWorld Explained part 1 of 2
http://youtu.be/fLue8bbh-zc

Qt HelloWorld Explained part 2 of 2
http://youtu.be/YYtTouGKyQg

Button Qt Quick Components for Symbian Part 1 of 2
http://youtu.be/d73H5OsNK2Q