<![CDATA[Get the binding expression of the property]]>Is it possible, using C++ backend, to get the value of the expression used for binding at some property.
Suppose I have a:

property var test: x * 10 + y * 20

When I call QMetaProperty::read and QQmlProperty::read, I get the already calculated value of the property. Is there any way to get a QJSValue that calculates this value? (in my example, I want to get "x * 10 + y * 20").

]]>https://forum.qt.io/topic/154977/get-the-binding-expression-of-the-propertyRSS for NodeSun, 14 Jun 2026 00:49:10 GMTThu, 29 Feb 2024 07:42:38 GMT60<![CDATA[Reply to Get the binding expression of the property on Tue, 05 Mar 2024 14:32:46 GMT]]>@GrecKo maybe you can suggest, is there any way to know if a property uses a binding to another property or not?

property int x1: 100
property int x2: x1

using QMetaProperty does not help to distinguish between these properties

]]>https://forum.qt.io/post/792177https://forum.qt.io/post/792177Tue, 05 Mar 2024 14:32:46 GMT<![CDATA[Reply to Get the binding expression of the property on Tue, 05 Mar 2024 10:04:15 GMT]]>@GrecKo I apologize for not responding for so long.
I need this for my dynamic debugging module. Also, several times I have encountered a situation where I need to copy a bind expression from one property to another. That is, not to bind one property to another, but to copy the expression used in Qt.binding() for target property.

]]>https://forum.qt.io/post/792127https://forum.qt.io/post/792127Tue, 05 Mar 2024 10:04:15 GMT<![CDATA[Reply to Get the binding expression of the property on Fri, 01 Mar 2024 09:26:30 GMT]]>@TurashviliAlik Why do you want it? Do you really want the string or way to evaluate it later?

There's QQmlScriptString and QQmlExpression.

Or you could have QJSValue and pass it a function instead:

property var test: () => x * 10 + y * 20 // or (x, y) => x * 10 + y * 20
]]>https://forum.qt.io/post/791818https://forum.qt.io/post/791818Fri, 01 Mar 2024 09:26:30 GMT