Watch the video here: http://bit.ly/28Yllql

1. Qt For Beginners - Part 5
Ask The Experts
Jeff Tranter
Brian Quinn
Christopher Probst
Integrated Computer Solutions
Visit us at http://www.ics.com
Video: http://bit.ly/28Yllql
Copyright 2016, Integrated Computers Solutions, Inc.
This work may not be reproduced in whole or in part without the express written consent of
Integrated Computer Solutions, Inc.
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2. In QML, I have a Text item with wrapMode:
Text.Wrap but the text isn't wrapping. What am
I doing wrong?
Questions
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3. import QtQuick 2.6
Rectangle {
width: 400
height: 300
Text {
anchors.centerIn: parent
font.pixelSize: 18
width: parent.width
wrapMode: Text.Wrap
text: "No live organism can continue for long to exist sanely under conditions of absolute reality;
even larks and katydids are supposed, by some, to dream. Hill House, not sane, stood by itself against
its hills, holding darkness within; it had stood so for eighty years and might stand for eighty more.
Within, walls continued upright, bricks met neatly, floors were firm, and doors were sensibly shut;
silence lay steadily against the wood and stone of Hill House, and whatever walked there, walked alone."
}
}
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4. Would it be possible to go into more detail with
kit configuration for cross-platform development
and remote deployment? Preferably with device
configuration and deployment demonstration.
To demonstrate the concept you could use any
device, but I have a particular interest in a
Raspberry Pi running Linux, and a Surface Pro
running Windows 10.
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5. Still having difficulty connecting to PostgreSQL from Qt.
Looked at forums, followed their recommendations and still
get "Not Loaded".There's a Russian and a Spanish step-
by-step guide, which I find awkward to follow properly. Is
there something very similar in English? Video plus text
would be great. I'm using Windows 7 x64 and MingW. I can
connect directly using pgAdmin3, Valentina Studio, MS-
Visual Studio, SQL Studio for PSQL, LibreOffice... Hope
you can help. Thanks in advance.
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6. Should I use the QML Designer in Qt Creator? I
heard it was not really ready for production use.
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7. I would like to develop a simple app to open up
a URL to a website and then get information
from the website that will populate some fields
in my app. What is the easiest way to do this?
are there any Qt Quick controls that can assist?
Questions
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8. Is it possible to place a button widget over top of an QOpenGLWidget to make
a UX comparable to Google maps? The button widget would be like the
stationary user account button in Google maps while the map would live in the
QOpenGLWidget. Ideally the button would be transparent. This person
http://stackoverflow.com/questions/16889319/put-transparent-qwidget-on-top-
of-qmediaview-in-qt5-on-ubuntu did something similar by making the button a
separate window that tracked the main window, but is hackish.
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9. What are some of the pros and cons of using
Qt resources?
Questions
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10. Can you give me some guidance on whether to
use qmake, qbs, or cmake as my build system?
Questions
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11. Can I use QML to create an editable TableView
that uses SQLite as the backend datastore? If
so, how do I do this? If not, is there another
technique I can use to achieve an editable table
with a database backend?
Questions
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12. WebEngine is not available for MINGW on
Windows. Will WebEngine support for MINGW
be available soon for 5.7 ?
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13. How do you handle QML textEdit that anchored
to bottom of screen on iOS and Android
devices?
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14. Someone told me that widgets are obsolete?
Should I not be using them?
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15. How can I contribute to the Qt project?
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16. Are all Qt classes derived from QObject?
Questions
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17. Are there virtual slots? How about virtual
signals?
Questions
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18. Qt promises binary compatibility between
releases. What does that mean?
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19. What does the access level (public, private,
protected) mean for slots?
Questions
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20. What is the recommended approach for fetching and displaying images on iOS
using Apple's Photos framework and Qt Quick? Simply invoking the default
image picker is not sufficient because the intention is to allow the user to select
multiple images. On Android this is fairly straightforward: fetch a set of URLs in
C++, and pass them in a model to a QML view whose delegate includes an
Image. However, it does not appear to be possible to use URLs in this way on
iOS unless the image is an asset in the project. Moreover, iOS image data
(NSData *) cannot be fed directly into the constructor for QImage, for example,
with the idea of wrapping the QImage in a sub-class of QQuickPaintedItem. So,
what can we do? Thank you!
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21. What is the difference, if any, between Qt Quick
and QML?
Questions
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22. What is a d-pointer?
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23. I suspect I have a memory leak. How can I
track it down?
Questions
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24. Is there a way to make system() calls through
Qt? For example, can I open the Windows
notepad from within a Qt application?
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25. How can I know what Qt header files I need to
include?
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26. What is the preferred rendering backend to use
for Qt on embedded Linux?
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27. This Completes the Qt for
Beginners Webinar series.
Thanks for attending!
Watch for more webinars coming up in the future.
Consider taking a formal Qt training class from ICS.
Hope to see you at the Qt World Summit 2016!
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