Catching Qt/C++ signal from QML custom Item/code - howto

[anda_skoa]

Try changing the signal's signature to have an int instead of the enum.

Or use the property binding approach.

Cheers,
_

[MarkoSan]

Try changing the signal's signature to have an int instead of the enum.

Or use the property binding approach.

Cheers,
_

Ok, but binding works only in QML=>C++ way, not vice versa, as seen in http://doc.qt.io/qt-5/qml-qtqml-binding.html#details, what I need is update QML element based on C++ class member value:

Detailed Description

Binding to an Inaccessible Property

Sometimes it is necessary to bind to a property of an object that wasn't directly instantiated by QML - generally a property of a class exported to QML by C++. In these cases, regular property binding doesn't work. Binding allows you to bind any value to any property.

For example, imagine a C++ application that maps an "app.enteredText" property into QML. You could use Binding to update the enteredText property like this.

TextEdit { id: myTextField; text: "Please type here..." }
Binding { target: app; property: "enteredText"; value: myTextField.text }

and the last sentence in the mentioned docs states:
Whenever the text in the TextEdit is updated, the C++ property will be updated also.
Can you show me please what did you plan to do, since I need contra scenarium.

Sincerely,
Marko

[anda_skoa]

Ok, but binding works only in QML=>C++ way, not vice versa

No

as seen in http://doc.qt.io/qt-5/qml-qtqml-binding.html#details

Which is totally irrelevant here since you are not trying to bind a property of a C++ object to an expression.

what I need is update QML element based on C++ class member value

Indeed, which is just a plain and simple property binding.
The "state" property gets bound to an expression using the context property object's "connection status" property.

Cheers,
_

[MarkoSan]

No


Which is totally irrelevant here since you are not trying to bind a property of a C++ object to an expression.


Indeed, which is just a plain and simple property binding.
The "state" property gets bound to an expression using the context property object's "connection status" property.

Cheers,
_

Can you give me example please?!?!?!

[anda_skoa]

You've done that numerous times already, I am sure

state: ueApplicationStatus.m_ueDatabaseConnectionStatus === UeTypeDatabaseConnectionStatus.CONNECTED ?
                   "ueStatusIndicatorDabaseConnected" : "ueStatusIndicatorDabaseNotConnected"

state: ueApplicationStatus.m_ueDatabaseConnectionStatus === UeTypeDatabaseConnectionStatus.CONNECTED ?
                   "ueStatusIndicatorDabaseConnected" : "ueStatusIndicatorDabaseNotConnected"

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Cheers,
_