While this class provides access to the database, the bulk of database creation is split off into a regular C++ file. /* * Copyright (c) 2018 Roland Hughes and Logical Solutions ALL RIGHTS RESERVED * * This code is “as-is” without any warranty expressed or implied. You may not modify or distribute it * without having purchased the right to do so from the copyright holder. This code is provided for * demonstration purposes only. … Qt and USB – Pt. 3Read more
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Posted inInformation Technology / Raspberry Pi
Qt and USB – Pt. 2
Hopefully you can all see the featured image. It’s a screen shot of our little application so far. No, I didn’t make it pretty. That is not the purpose. Here is a slightly different shot of the same screen. This is the way it looks when the system is slow and the database is being created. The little circle with bars is an animated gif I generated on this site. When the main window catches … Qt and USB – Pt. 2Read more
Posted inInformation Technology / Raspberry Pi
Qt and USB – Pt. 1
Recently I’ve had some discussions on the qt-interest mailing list about Qt and USB and why it is not integrated in the package. Many of the kids there aren’t old enough to shave so they don’t remember this _exact_ same journey with serial ports. Couldn’t be done in a cross platform blah blah blah. Then there were various “unofficial” Qt based serial port classes. Then we had “almost” official stuff showing up in the Qt … Qt and USB – Pt. 1Read more
Posted inExperience / Information Technology
Question From a Reader
The following question came in from a reader who happened to catch one of my posts on a programming email list. ==== As usual, I quite enjoy your detailed analysis coupled with historical contexts, since I learned my trade through those days (Sun SPARC workstations, VAX minicomputers running VMS, etc.). They are always entertaining, usually edifying, and sometimes nostalgic for me. :) I’m curious, though, about one particular point you made: Windows isn’t even going … Question From a ReaderRead more
Posted inInformation Technology / Raspberry Pi
How Far We’ve Come – Pt. 16
As I pointed out many times in my Qt and databases book, most of the database examples you find online and even in official Qt documentation are shit. This is not my ego talking. They all do everything in the main event loop. Almost all of the cheat by using only a handful of rows so everything “seems” to work. Then you try to use it on real data and wonder why the application seems … How Far We’ve Come – Pt. 16Read more