Call function in ui.qml!

[Hesam]

Please help me!
how can i call a c++ function in ui.qml file?!

[ODБOï]

hi @Hesam you can't, functions are not supported in ui forms. https://doc.qt.io/qtcreator/creator-quick-ui-forms.html#javascript-functions
Why do you need to call a function in the .ui.qml ? Why not call it in the component (.qml)

[Hesam]

thank you for your response
I started a project on Qt Design Studio and then convert it into a Quick project
Now the only files I have are ui.qml files
Now I need to call the signals from the c ++ files
this is my question: how can i call c++ function when i clicked on a shape in ui.qml file?

[Muddassir]

To call CPP function in Screen1.ui.qml ... im renaming file name to Screen1.qml ... is it proper way to call functions?

@ODБOï could you provide guidance how can we call functions in the component(.qml)... e.g. i need to call function when button clicked.

[kaixoo]

You need to create a model with Q_INVOKABLE function:

class MyModel : public QObject {
  Q_OBJECT
  QML_ELEMENT

  MyModel() = default;
  ~MyModel() = default;

public:
  Q_INVOKABLE void doSomething();
};

Then add it to your QML Widget:

import Your.App.Namespace

Item {
  MyModel { id: myModel }
}

Then you can use myModel.doSomething().

Maybe read the QML documentation or contribute to a QML project to see how it works? I learnt all this while forking MuseScore.