Qt in Education

Hi, and welcome to the Qt Dev Net!

[quote author="LaRainette" date="1398106709"]nothing that has been released publicly can be patented[/quote]Correct. But patents and copyrights are "not the same thing":http://www.uspto.gov/trademarks/basics/definitions.jsp. In this case, we're talking about a book which has been published -- it receives a copyright, not a patent.
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[quote author="LaRainette" date="1398106709"]without a proper copyright notice, publishing something publicly is equivalent to entering the public domain AFAIK.[/quote]No, copyright is "automatic":http://www.ipo.gov.uk/c-auto.htm.

[quote author="LaRainette" date="1398106709"]The author probably still owns some sort of copyright but... publishing something publicly is equivalent to entering the public domain AFAIK.[/quote]Note that "public domain" means "no copyright".

@Steven: Thank you! Your patch has been approved :D

@Alex: This is the beauty of an open-source project like Qt :) Everyone has the power to fix an issue they find.

Hi and welcome to devnet,

What is available for Qt 4 is mostly valid for Qt 5 or with some minor adaptation, so you can safely learn the ropes with Qt 4 material.

If you are starting now, you should rather go with Qt 5

The next step is reading the Qt source code I guess...

thank you IamSumit

In you project file you put
@
INCLUDEPATH += E:\opencv\build\include
@

And in you sources you use
@
#include <cxcore.h>
@

You should change either INCLUDEPATH
@
INCLUDEPATH += E:\opencv\build\include\opencv
@

or #include directive
@
#include <opencv/cxcore.h>
@

thank you Clochydd
thank you koahnig

Hello,
you can use @push.Button->setIconSize(const QSize & size)@

Hi and welcome to devnet,

Has silly has it may sound, you need to fix the code using OpenCV.

The problem is not Qt related. Qt just tells you that OpenCV has thrown an exception and you didn't catch it anywhere.

released!!!

Sorry, i didn't see that it's a thread from more than 1 month ago. I hope that i could still help you and/or someone else who didn't understand how to invoke QML methods.

Yeah, OK. I'll give it a new go with the porting guide in place.
Wasn't aware of that and I had a bad day (car broke down, refrigerator stopped working, things like that) so I was quite annoyed generally.

The books probably has a slightly higher value than estimated earlier... ;-)

For Android here's another good link for setup "http://www.kdab.com/qt-on-android-episode-2/":http://www.kdab.com/qt-on-android-episode-2/

Hi and welcome to devnet,

You should have a look at QListWidget::selectedItems and QListWidget::insertItems

if you are interested in QtQuick, "here":http://qmlbook.org/ is a good online book.

Hello norrbotten68,

Book is right , but you skipped following instructions..
"All the widgets look fine now, except the text label, which shows &Cell Location. Click Edit|Edit Buddies to enter a special mode that allows you to set buddies. Next, click the label and drag the red arrow line to the line editor, then release. The label should now appear as Cell Location, as shown in Figure , and have the line editor as its buddy. Click Edit|Edit Widgets to leave buddy mode."

Be patient with Digia, they might take time to answer. Depending on where you live you could try to ask on a more local sub-forum to see if anybody could burn and send you a DVD containing the needed packages.

Check this "sqlbrowser":http://qt-project.org/doc/qt-4.8/demos-sqlbrowser.html. It also uses in memory database and a QSqlTableModel and QTableView for displaying the data. (Refer browser.cpp)