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This is an overview of the latest updated topics, visit the full forum here.
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A free book on Qt5 over a day ago
Is there a free book available (released) for on Qt5?
like:
C++ GUI Programming with Qt 4
The Book of Qt 4 The Art of Building Qt Applications
An Introduction to Design
Patterns in C++ with Qt 4
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Under Win7 64 bit, cannot add mysql driver. May 8, 2013
Under Win7 64 bit, cannot add mysql driver.
I use 32Bit qt and 32 bit mysql, build mysql driver ok, QSqlDatabase::drivers() can see “QMYSQL”, but QSqlDatabase::addDatabase(“QMYSQL”) failed.
I copied the libmysql.dll to C:\Windows\System32, still fail.
I succeed connect mysql under Win7-32bit.
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A book on Qt5? June 4, 2012
Coming from Amazon, all the books on subject Qt are focused on Qt4 (some even on Qt3) – with the beta of Qt5 already available and the final release hopefully approaching, are there (plans for) any Qt5 books, focusing on the more recent features of Qt? Even thou Qt Quick is part of Qt4, its late arrival resulted in its total absence from books on Qt4.
Devtalks are somewhat informative but don’t come nowhere near the informational value of a good a thorough book.
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Qt All functions December 31, 2011
My IE gets crazy when I try to see Qt All Functions page. So please give me a document (doc, pdf…) which contains all contents on Qt All Functions page. Thank you very much. It’s neccessary for me. Thank you again.
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Advanced Book December 27, 2012
Hi:
I would like to know, is there any advanced book whick focuse on qt subject and design, specially thread, signal slot mechanism and event system?
I like to understand qt internal mechanism, many books partially mentoined these subject and designed for rapid learning…
I need more detail about qt model…
Regards,
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Translations of "Qt in Education Course Material" to other languages June 16, 2010
Would you be interested in translations of “Qt in Education Course Material” to other languages (than English)? I could do (part of) the translation in my native language (Greek).
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OpenGL Tutorial Release 1.0 by Digia, Qt Learning March 27, 2013
The OpenGL Tutorial [qt-project.org] (dated February 28, 2013) provided is a excellent introduction to OpenGL using the Qt framework. However, the document has some inconsistencies regarding the shaders. I can’t find any other ways of giving feedback other than posting here:
Edit:
The document does not state what version of Qt it is based on, but I am using Qt 5.0.1. This of course implies the use of OpenGL ES, and I would assume that a tutorial published on February 28th 2013 was using Qt 5.0.1. The source code examples referred to in the documents have however problems compiling in Qt 5.0.1 due to the shaders.
Section 3.1, page 20: paragraph states: “.., the vertex variable needs to be declared as an attribute vec4.” But in the following source code it is declared as: in vec4 vertex;, and this do not compile (QOpenGLShaderProgram). It should be attribute vec4 vertex;
Same section and page: paragraph states: “The main() function the sets the built in hl_FragColor output variable…”. First, it is gl_FragColor. Secondly, the following source code is given in the document:
- uniform vec4 color;
- out vec4 fragColor;
- void main(void)
- {
- fragColor = color;
- }
This results in a compiling error when calling QOpenGLShaderProgram.addShaderFromSourceCode(QOpenGLShader::Fragment,….
It should be:
- uniform mediump vec4 color;
- void main(void)
- {
- gl_FragColor = color;
- }
As the document is self is pointing out, functions in GLSL need to specify in/out, but this do not apply for the main-function.
The same errors occur in the shaders given in section 3.3 page 27, section 3.4 page 30 and section 3.5 pages 34-35.
Luckily, I saw it right away, but as an introduction tutorial it should be corrected.
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Capturing MJPEG March 21, 2012
Hello im a student from belguim and im dooing a project atm and i have to inport MJPEG data from a ip cam into Qt.
this is my first year of Qt and i searched al around and i cant find somthing that helps me get started.
could annyone get me anny idea’s how to get started?
thx on forward
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Problems with videos not loading March 5, 2013
I’m somewhat sure this isn’t an issue on my end, but I’m willing to try anything. I am unable to view or download videos from the video tutorials page. For example: http://qt-project.org/videos/watch/qt_quick_introduction_to_qt_quick_part_1_4
I see a large white area where the video should be, right clicking on that area brings up a ‘about shockwave flash’ menu. I am able to watch youtube videos and even videos on the Qt homepage (e.g. Livecoding effects vid on http://qt-project.org/) I am also unable to use the download link for the previous intro to qt quick (http://download.qt.nokia.com/videos/DevDays2010/TrainingDay/DevDays2010_-_Qt_Quick_2_User_Interaction_User_Input_and_States.mp4) getting a 404 error.
I am running Linux, viewing the page in Chromium (v.25), using the chrome-pepper flash plugin
Thanks!
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Does QT can be installed on UBUNTU March 8, 2013
Hi, I want to install QT 4.8 on UBUNTU. If its possible, please tell me from where i can downlad and how to install.
Thanks & Regards,
Mythili.
This is an overview of the latest updated topics, visit the full forum here.