QML and Qt Quick

@VFCraig I would add that the Liberation Sans font we are using displays the zero character much narrower in width on my system than on the others, and on the character set sample images available on the net. I have installed the same font files as are used on the other systems. One additional note, I am using 5.15. The others are using 5.14. Though this does not seem the sort of thing impacted by such a minor version change.

@qAminzzz i assume you are talking about the footer of the ApplicationWindow type? If so wrap your footer item in a plain Item and animate the y position relative to this container parent.

Declare a property pointing to your mainView in your ApplicationWindow : ApplicationWindow { property alias mainView: mainView Rectangle { id: mainView } // ... } And then access it through the ApplicationWindow.window attached property in other files: ApplicationWindow.window.mainView

Would switching to a QAbstractListModel (you'll get roles instead of columns to define your data) and using a Repeater with a custom delegate work in your usecase? Whether it's a list or a table model doesn't matter much. The number of columns is fixed, so a list model (using roles instead of columns) is fine. This is actually a separate question I wanted to ask in another thread... I don't really understand the concept of "roles." I keep googling it to find more explanations but none of them make sense to me for some reason. The bigger issue is that I don't think I understand how to use a Repeater for this, if what I really need to do is draw something on a canvas for each of the items in the list (or for each row in the table). Can a repeater be used that way? That's because *Views already have the basic plumbing to connect to a model in place [...] just design a component that react to those signals. I think that's the part I was having trouble verbalizing, thank you for attaching the right words to it! Just to make sure I actually understand the methodology, let me type out a scenario and make sure it passes a sanity check. Let's say that I have my subclass of QAbstractTableModel, which, like all descendants of QAbstractItemModel, emits those signals. What I need to do is develop a QML component that connects to those signals. Here's where I'm a little weak in my understanding... It seems to me that there are two things I need to do: Somehow declare a model for the component, where the model is some QAbstractItemModel object in the context of my QQmlApplicationEngine Declare onDataChanged for my custom component, and it will automatically be connected to the dataChanged signal that gets emitted from that QAbstractItemModel object Is that correct, and if so, how do I declare the model object for my custom component? ListView and TableView do this through a delegate model, which, as I mentioned above, I'm not sure I know how to use to draw things on a canvas. Thanks for the help, @GrecKo and @VRonin!

I encapsulated a vertical table header myself.

@veryqtperson said in Hello World "pixelSize is not a member of QFont" (similar w/ "family"): Yet, one would expect a Qt-specific IDE such as Qt Creator not to have such errors when it doesn't know about documented properties of standard Qt/QML types. It depends on what kind of error you are talking about. Qt creator has nothing to do with JavaScript Engine used to run the QML code. What I said, is that even if you QML code is not totally correct, you can run it as long as you are not going through the wrong code part. This is the way JavaScript / interpreted languages works, so nothing direct link with Qt Creator. But, yes, Qt-Creator is far away from being bug free and the 'M16' error messages are very annoying

Hi, @MHermann said in Using barcode scanner causes disappearing of GUI of application: What is this and what can I do to prevent it? Not knowing anything about the implementation, it's hard to tell anything about what is going on.

@tacdin - no idea, sorry, never used slider in a project before.

I've gotten the same problem with my static build of Qt 5.15.2. The solution in my case (using CMake) was to call qt5_import_qml_plugins: get_target_property(QT_TARGET_TYPE Qt5::Core TYPE) if(${QT_TARGET_TYPE} STREQUAL "STATIC_LIBRARY") find_package(Qt5QmlImportScanner REQUIRED) qt5_import_qml_plugins(${CMAKE_PROJECT_NAME}) endif() Not sure what is the equivalent in Qt 6, haven't tested it myself and can't find qt6_import_qml_plugins in documentation. Anyway, qt5_import_qml_plugins is available only from Qt 5.14(?), so for older versions the alternative would be this external module.

@JKSH said in Found interesting way to crash QML app.: Would you be willing to submit a bug report to https://bugreports.qt.io/ ? Yeah, I can do that. Edit: https://bugreports.qt.io/browse/QTBUG-98032

Would you please tell how do you solve the problem?

@Mark81 Multimedia is reworked in Qt 6.2 from the recent talk of Lars Knoll and could have a lot of issues. I would not use it now. I do not use it and still apply gstreamer for playing videos.

Got it working. Initially tried to inherit QApplication and incorporate the eventFilter and the signal to be sent in there. That didn't work. Then sorted through Grecko's suggestion, which BTW, qmlRegisterSingletonInstance appears nowhere in the link provided, initially trying to make the QApplication object accessible from QML. That didn't work. Finally got it to work by making the custom object containing the eventFilter and signal accessible from QML (you would think that, installEventFilter, would reparent the object, but then again a custom QApplication that incorporated one didn't work either) and that allowed it to work.