@mrjj
I still don't understand how to put LED's on different places on the map

@mrjj said in how to show LED in GUI and use push button to control it:

i use promotion. that allows you to copy them around and at run time they be the leds.

please explain more.
how to use promotion?

@ambershark Well I haven't found any information on the web so could you please show how would you do it with cmake?

This error happens when you compile with one version but another one is found at runtime, either you need to deploy your libraries, plugins and qml and configured to be found by ld or compile for another version

Regards

Hi
button also enabled in newer Creator.
You kit looks ok.

If you in Kits, select Managed to the Right of
Device. button is still grey?

well I guess I can add the row of selected items in the mimeData of the QDrag and then in the drop event do the move manually (taking the items and inserting them again in the position of the drop event...)
I'll post the code when I'll have some time to give it a try

thanks for sharing this information
tutuapp

@ronpetit put here the output of the file: config.summary

Cleiton Bueno

Blog | Linkedin | B2Open

@o6a6r9v1p said in QT5 application code size or data memory size limit?:

it is not very big, around 1.8MB.

The size is definitely not a problem.

when i declared a variable additionally, USB stops responding.

And what about the rest of your app? Do other parts still work?

when that variable is commented, compiled, it works fine, and works correctly.

Give us more details about the variable.

i didnot debug this because it is addition of one line code, and because earlier code was working fine.

You should debug it because your code stops working.

This is my guess: That new variable isn't the root cause of your problem. There was an existing, hidden problem in your code before, but you didn't notice it before because it didn't stop your USB comms. After you added the variable, your app's memory layout or timings changed a tiny bit, and that was enough to cause the existing, hidden problem to become noticeable.

Hi
Yes, its from Qt3.3 so its like stone dead in 2018.

FYI: I created https://bugreports.qt.io/browse/QTCREATORBUG-20834 to get a warning message for such cases.

@CroCo
well im asking as \n can be used as terminator to know all data been read.
have you tried hooking up
ReturnPressed() ? ( just to test)

You can override KeyPressEvent and
handle the input there. Use a timer to trigger sending to textEdit
once data is complete if goal is just to avoid
it trigger the processing too soon.

Hi
Just as a note
retranslateUi is not magical by any means. it just re-sets the text for u if created via designer.

void retranslateUi(QMainWindow *MainWindow)
{
MainWindow->setWindowTitle(QApplication::translate("MainWindow", "MainWindow", nullptr));
pushButton->setText(QApplication::translate("MainWindow", "load", nullptr));
pushButton_2->setText(QApplication::translate("MainWindow", "save", nullptr));
pushButton_3->setText(QApplication::translate("MainWindow", "clear", nullptr));
}

So to make your own, you just have to re-set any text you have.

@BadeTech
I would give it one more day to see if anyone has idea.

Construct the strings in C++ and pass them to QML as strings. That is the simplest solution. In fact, QDateTime can help you greatly here, see its toString() method.

Do you have X server running (Raspbian GUI) when you launch the example? If so, don't. Start the app directly from command line, without the X server. Not sure if it will help, but maybe.

I have not encountered that error myself.

@Guest said in Creating a Virtual Instrument with Qt:

@Annabelle Hi A. I'm presuming you visited http://doc.qt.io/qt-5/qtmultimedia-index.html
It may not be exactly what you want, I have a feeling you might be interested in the JUCE libs. I tried integrating it into Qt and got it working on a very basic level. https://juce.com/ But don't take my word for it, I'm a gnoblar.

How did you get JUCE to work in Qt? Is there a specific code I should try for the JUCE libraries to work for the virtual instrument I'm wanting to create?

@VRonin said in How to properly uninstall docs?:

Just delete the folder. There's nothing fancy about it

This might leave stale entries in the Maintenance Tool database.

It's a known issue, see https://bugreports.qt.io/browse/QTBUG-52386 (most useful is Eike Ziller's comment: As a workaround... uninstall the left-over documentation and example packages when starting MaintenanceTool with --show-virtual-components)

@mpergand said in How to add menu items under application menu on macOS?:

QAction::ApplicationSpecificRole This action should be put in the application menu with an application specific role

Create the action with this menuRole:

action=menu->addAction(tr("Purchase...")); action->setMenuRole(QAction::ApplicationSpecificRole);

Perfect! Thank you....

hi @DavidM29 ,
Show the Slider code please.

What if you just add a margin to your QProgressBar, try like 4 pixels. Should keep the chunks inside.

Hi
what type of step by step are you after?
I mean, what did pdf show ?
There is
https://www.ics.com/blog/getting-started-qt-and-qt-creator-windows

@Weichao-Wang said in cout does not work in Qt:

How can I modify the code so that the program could return to the command prompt automatically?

If you aren't going to use anything from the QCoreApplication, just remove that stuff. "a.exec()" is telling it to enter an event loop and wait until it gets a signal to quit. Normally this event loop is used because you open some windows that you want to stay open, or you start a network service that should stay running. If you don't use any of the Qt features, then you don't need to have QCoreApplication (or QApplication for a GUI) or enter the event loop.

@JonB Lol totally, I take full responsibility for that and apologize. ;)

Keyboard and mouse (or touch screen) are not the same. So which one are you currently using and what is you exact goal ?

Hi,

Is that SDK available somewhere ?

Thanks for the feedback !

Get a stack trace from those processes that hang and post it here. (e.g. as described here)
That's the best you can do to trace it, at least that is if it doesn't already hang in the debugger ...

PS.
Show us (parts) of your Worker class, as I see trouble brewing here.

This:

worker->stop(); //sets boolean cancel to true to let worker finish its work

and this

workerThread->quit();

very rarely go hand in hand.

Hi,

Why are you using setCellWidget and not a QDoubleSpinBox based QStyledItemDelegate ?

@jars121

did you ever solve this issue? I have the same problem

Hi
first step is to check return of the connects to see they all return true .

Use the official git repos or archives: https://download.qt.io/official_releases/qt/5.11/5.11.1/single/ There is no need to run syncqt.pl on them, just configure and then make / make install.

However, there is no need to go through all the trouble of compiling yourself. Just use the Qt installer https://www.qt.io/download-qt-installer

So the reason for my question was I just updated to Qt 5.10.1 and the newest Android SDK.

My Qt project would compile without errors, but failed in the APK build process with a lot of java exceptions.

A "Clean Project" and "Build Project" was done and this had no effect..still errors.

After much online searching, I found a 5 year old thread on StackOverflow that suggested deleting the "android-build" folder..the entire folder. The Qt build process recreates it if it is not there. Problem solved. APK built w/o issues.

Thanks guys, I have been going full speed on the DLL lately, these tips have helped a lot.

Hi
Italian or Spanish ?