The Lounge

April 2021:
Since the last time I looked, there appears to be Qt for small business, where businesses making < 250K $US per year can license Qt for $499 per year... Extra distribution fees apply for embedded devices.

This is an affordable thing for small businesses.

@Kent-Dorfman
It's still alive: in this forum! I can be grumpy at times when answering, and I know of a certain expert here whose replies are very good yet often delivered in a "non-gentle" fashion... ;-)

Hi Everyone and thank you so much for your help. Actually i have solved the Problem of the Linker by adding the Source Code of the libraries to my Ptoject (Add Existing Files .... / Add Existing Directory .... ) to bypass the linker. So thank you so much.

@tham the very first stupid decision was to create QtC........

@Joel414 said in Bluetooth "news":

@AnneRanch said in Bluetooth "news":

I can turn on bluetooth SETTING n Ubuntu 20.10

Many laptop computers have a hardware switch or key combination to turn Bluetooth on and off. Look for a switch on your computer or a key on your keyboard. The keyboard key is often accessed with the help of the Fn key.

AS I said - bluetooth is not, IN MY OPINION, subject to many posts.
My comment was directed to MAJOR and undocumented changes implementing / enabling bluetooth in general in Ubuntu 16 and then in Ubuntu 20 .
In 20 I could not get out of "airplane mode " to "turn the bluetooh on" .
On Ubuntut 20 .10 it works as expected - but it no longer appears as "bluetooth is on" on top status bar.
Top status bar had few other indicator icons ALL BY DEFAULT - no setup was necessary. Now on latest Ubuntu they are all gone. Maybe because nobody was using them ?
But this is QT forum and OS problems are "off topic ".

@Kent-Dorfman Was he teaching object oriented using modula, or was he confused about what modula was out of the box? I have talked to a few people who use languages without object oriented support, but program them in the object oriented style. open65241 is one such project that programs C in oop style.

My OP was a bit dense, suffice it to say that I wish that Qt was completely free and open source while being mutually beneficial for users and contributors.

@AnneRanch said in Please help me to understand:

So the forum expects me to be silent and not express MY OPINION

Well, forum is not a thinking entity. There are many people here with very different opinions. We're just talking. You are expressing your opinion, I'm expressing mine and hopefully we can come to some common ground.

to some uncalled for petty or off subject commentaries?

I'm sorry but I'm not sure what you are referring to. The subject was your post being moved and I was explaining that there's nothing wrong or antagonistic about that.

Do I really care ? ( about rating)

Oh, you mean the +1/-1? Honestly I didn't really pay attention to that but it seems to be a bit misused here. In the forum software It's intended to help promote helpful answers. I don't really think it should be a thing in the lounge because people sorta seem to use it as "I agree/I don't agree" and it has unintended user privilege consequences. To be clear I'm just talking and didn't -1 your posts.

That's a good point actually. While I think it's ok to rate answers in the technical sections to promote helpful answers and mark down misleading or simply wrong ones, rating discussions in the lounge is not a good idea IMO. I don't think this can be set up on per forum section basis, but I can ask.

@JonB said in Which device is "faster "?:

The only real slowness comes when something tries to physically push a byte out onto that stick.
Is that not right? I am interested in these things, but know nothing :)

To fulfill this, my (last) 2 cts.
I am also had speed limitations on file transfer between VirtalMachine Guest (Linux/Ubuntu) <=> Host (Windows 7/10).
One trick what helps me was to use SAMBA, which transfer rates was much more better as Shared Directory (with VirtualBox).

But this implies 2 transfers, on from Guest to Host and then vom Host to USB-Stick, it is not so smart but quicker ;)

ITS WORKING all I had to do was run it as admininstrator

@JKSH said in Do I have to pay money?:

Does this mean you've found a way to resolve the "usability issues" you mentioned before, without depending on the proprietary library/application?

Usability issue is that you either use proprietary viewer with more functionality or else convert to .pdf and use system viewer. What I had in mind was that application could either use or not proprietary library (if one has a license), which should be resolved at build time. But in this case the application cannot be GPL.

keep in mind that these stone age ancestors ran on machines that did not have virtual memory, but a flat real-mode address space...and were subsequently limited in their capabilities because of that. memory management is a very significant portion of any modern OS footprint. The UNIX you wrote of really bore absolutely no resemblence to modern UNIX.

I fondly remember the days of the 16KB Z80, where half of it was a prom BASIC interpreter, and if you wanted to do anything snazzy you had to allocate stack space, stuff hex machine code into it, and syscall() the address of that stack buffer.

Ah, nostalgia. About the closest to a 4KB OS you have these days is some of the microkernel RTOS systems that cater to microcontrollers.

That's a good explanation; thanks.

The initial job is working on a built-in UI for a medical product. It's an American company, but they're building this product for a French concern, and evidently the European powers-that-be influenced the choice of Qt for the UI. Areas I need to learn more about include (lightweight) animation and QML.

Still not much call for Qt programmers here in the US, but I think it might be starting to grow a bit.