General and Desktop

Now it finally starts making sense. I was able to link the signals and slots together thanks to your explanation. I think the signal procedures are like radio transmitters that emit a message at a certain frequency. And a slot is the transmitter that must be tuned to the same frequency with connect() to be useful. But just like in radio, repeater receiver/transmitter pairs (chaining) are needed over long distances (across class boundaries). Please excuse my ramblings and many thanks for your helpful, clear explanations.

@Kent-Dorfman +1 for your command of the English language to (correctly) use "one fell swoop", and not the spelling so often found which refers to football or chickens... :) In a single word, is the way to achieve your desired behaviour by defining an eventFilter() on the dialog, where you can select which events to handle/pass on and which to ignore?

@Kill-Animals said in Do I need the private libraries in order to make a custom QGraphicsLayout?: do I need to be using the private libraries here No. They are private to the Qt library itself for a reason. The subclasses that already exist layout items in non-overlapping areas (horizontally, vertically, or both). It sounds like you want something far more complex than that. If you want to handle this as a layout manager then you really have no choice but to subclass QGraphicsLayout. When you do that your subclass needs to implement its own logic for all of the pure virtual members and develop its own mechanisms for actually laying out the contained items. It should not need to reach into the private workings of the abstract QGraphicsLayout to achieve this.

My mistake. If you note the second constructor does what I want: get a two dimensional array of [row ][column] that will allow me to construct a contiguous array of qreals. White the final constructor I was trying to make it less verbose. Some other languages allow something like x[0][:] to return and array with the first row of x[][]. Also, I will note that I have watching on but I do not get a notification unless I click no the icon, before a number, representing the number of notifications, would appear on the icon.

@JonB You are right. I will try.

@Publicnamer I look forward to your future illustration of such fundamental bugs in QString. The problem with programmers these days is that they do insist there are no bugs (without evidence), I don't agree with your sentiment here. Rather I find the problem with (some) programmers is that they are too quick to blame their tools --- toolkit, Qt, whatever --- when they should reflect on how widely used it is among other people and it is their own code they should examine instead. Speaking at least from experience on this forum I know just how many people come say "there is a bug in Qt" when their own code is faulty. Lots & lots of times....

@pingal That is a funny one! Windows should be case-insensitive, filename-wise. However, it looks like MinGW linker is case-sensitive to some degree.

What exactly do you want to happen when clicking on that QLabel ? The proper way is to create a subclass of QLabel and re-implement mousePressEvent however you can do things a bit differently since you are using Python.

About running such a script as a QProcess : I am trying to make it work in a sandbox environment (App Store), but I'm not sure wether the main app's entitlements apply to the osascript QProcess launched ? I'm getting access violation errors but I'm not sure if it's because my app is not signed correctly with entitlements, or if maybe it is because I must figure out a way to get the entitlements to apply also to the subprocess...

@Guigui64 said in block C++ and waiting for a qml signal to continue execution: However I think that, as you recommend, I will turn to another solution, maybe split the code in 2 separate functions and avoid the "blocking" solution.... That's much better, and what you should do, yes. As a side note, QEventLoop is used correctly, as far as your code goes and as far as I can tell, but you should avoid it in principle.

@Gabber said in How to hide all widgets from a QVBoxLayout with spacer?: The "morph into" function in the QT creator does exactly what you write, doesn't it? There I can also convert the layout into a QWidget. I have hard time to figure out how to convert (morph?) a layout to a widget.

@mrjj said in Uniquely identify a machine: then it should be rare that someone change the mac ID yeah that's what I counting on.

As stated in the documentation you gave us, you have to set _WIN32_WINNT to a value greater or equal to Windows 8 and you must not redefine a value defined by the windows headers itself. When you use qmake you can add a compiler definitions with the DEFINE command: https://doc.qt.io/qt-5.12/qmake-variable-reference.html#defines DEFINES += _WIN32_WINNT=0x0602 But since we're here in Qt-forum - why not use QHostAdress?

@mrjj Thanks for your code example, it works perfectly! I have thought about the whole thing again and will stay for now with a simple select (without shift). Therefore I will mark the thread as solved.

Hi Many use an online code revision system as not to lose code if the system fails. Like https://bitbucket.org/product You don't have to use an online service but if you use it only locally, the safety is lacking. Alternatively, you can use a sync service like pcloud and let it store copies of the projects into the cloud.

Hello, I want to know how to add a suffix to a file after saving it on filedialog in qml and I came here in hope to find my answer. But It makes me sad when I can't find it. I tried filePath = filePath + '.txt' but isn't working for me. Can anyone share a website with me in which I can find the solution? I will be very much thankful to you.

These slots are named to take advantage of automatic connections between signals and slots implemented by QMetaObject::connectSlotsByName() and most often used in Qt Designer UIs. This mechanism is not inherently evil. However, if you rename the object in the Designer UI and not the matching slot then the automatic connection will not happen (silently). Conversely (and less likely), if you name a function on_blah_triggered() for a reason unrelated to the UI, but where blah exists and has a triggered() signal, you may find an unexpected connection is made (silently). You will find these at run time. This fragility is the reason for the warning. The alternative is to avoid the automatic connection naming and explicitly code connections in your constructor. If you use new-style connect() then this will fail at compile time in the first case, and the connection will not be present in the second.

If you mean official documentation for QtMvvm then no. This is a third-party library, so The Qt Company is not the one to document it. I have no idea what Qt_MVC might be referring to. I suspect the answer is the same.

Text { anchors.left: parent.left anchors.verticalCenter: parent.verticalCenter anchors.leftMargin: 8 font.pixelSize: 12 text: modelData.name color: "#b9b5b5" Component.onCompleted: { console.log(JSON.stringify(modelData.name)) } } so modelData.name does the trick....maybe there are better ways, if someone hve any suggestion, please share