Your delegate logic is more complicated than it needs to be when it references the selection model and so on. You should be able simply to access the selected property in the delegate. In fact, unless you do something like this, QML will not know that the color property needs to update. color: selected ? "#F1F8E0" : "#ffffff" The basic QML paradigm is that you react to property changes using logic like this. It is possible to use other approaches but this is the starting point for most things. QML tracks the declared dependencies between properties and updates any property that depends on another property that has changed. If you wanted to add logging in like you have in your current code, I think you can do it like this: color: { console.log("Color changing - selected = ", selected); selected ? "#F1F8E0" : "#ffffff" }

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In QT Design Studio, Tab Buttons are mostly for navigation within the UI, but each tab doesn’t automatically hide other content. Usually, a StackView or Loader is needed to switch visible content depending on the active tab.

@IamSumit can you reproduce the issue and share the Support Information logs. Please refer to the following Knowledge Base Article regarding how to obtain the Support Information is https://qatools.knowledgebase.qt.io/misc/collecting-support-info/collecting-support-information-linux-mac-windows/

I am looking for a teammate for this competition, an English-speaking person preferred living in Germany.

In qnamespace.h, I add some key_code mappings : For example : enum Key { [...] KEY_CLEYVER_F1 = 0x01002122, // unused Qt keycode map for Cleyver XTremTab8 F1 Key KEY_CLEYVER_F2 = 0x01002121, // unused Qt keycode map for Cleyver XTremTab8 F2 Key [...] } And in androidjniinput, I add switches in static QKeyCombination mapAndroidKey(int key) { [...] switch (key) { case 0x00000122: // XTREMTAB f1 return Qt::KEY_CLEYVER_F1 ; [...] } I have four android keycodes : 0x121, 0x122 (for Cleyver) , 0x1a0 and 0x1a1 (for Crosscall).

Le [=] n'étant pas nécessaire ici vu qu'il n'y a rien à capturer dans la lambda. connect(obj1, &MyObject::mySignal , this, [](int arg1){ qDebug() << arg1; });

Hi, I think you can use https://forum.qt.io/category/5/qt-io-webservices category for this type of question (moved there by the way). Are these in your "unread" section ? Are they marked as you following them ?