<td style="background:#676767; color: white">Qt Widgets (main.cpp) / Qt Quick (main.qml)</td>
<td>&#10229; UI code, written by hand</td>

<td style="background:#3daefd">src/Binding.h</td>
<td rowspan="3" style="valign: center">&#10229; generated from binding.json</td>

<td style="background:#3daefd">src/Binding.cpp</td>

<td style="background:#3daefd">rust/src/interface.rs</td>

<td style="background:#676767; color: white">rust/src/implementation.rs</td>
<td>&#10229; Rust code, written by hand</td>

json
{
    "cppFile": "src/Binding.cpp",
    "rust": {
        "dir": "rust",
        "interfaceModule": "interface",
        "implementationModule": "implementation"
    },
    "objects": {
        "Greeting": {
            "type": "Object",
            "properties": {
                "message": {
                    "type": "QString",
                    "write": true
                }
            }
        }
    }
}

bash
rust_qt_binding_generator binding.json

rust
use interface::*;

/// A Greeting
pub struct Greeting {
    /// Emit signals to the Qt code.
    emit: GreetingEmitter,
    /// The message of the person.
    message: String,
}

/// Implementation of the binding
/// GreetingTrait is defined in interface.rs
impl GreetingTrait for Greeting {
    /// Create a new greeting with default data.
    fn new(emit: GreetingEmitter) -> Greeting {
        Greeting {
            emit: emit,
            message: "Hello World!",
        }
    }
    /// The emitter can emit signals to the Qt code.
    fn emit(&self) -> &GreetingEmitter {
        &self.emit
    }
    /// Get the message of the Greeting
    fn message(&self) -> &str {
        &self.message
    }
    /// Set the message of the Greeting
    fn set_message(&mut self, value: String) {
        self.message = value;
        self.emit.message_changed();
    }
}

cpp
#include "Binding.h"
#include <QDebug>
int main() {
    Greeting greeting;
    qDebug() << greeting.message();
    return 0;
}

qml
Rectangle {
    Greeting {
        id: rust
    }
    Text {
        text: rust.message
    }
}

<img src="demo/screenshots/demo.png" alt="Qt Widgets UI with Rust logic"/>
<figcaption><a href="demo/src/main.cpp">Qt Widgets UI</a> with <a href="demo/rust/src/implementation/file_system_tree.rs">Rust logic</a></figcaption>

<img src="demo/screenshots/demo2.png" alt="Qt Quick Controls UI with Rust logic"/>
<figcaption><a href="demo/qml/DataAndChart.qml">Qt Quick Controls UI</a> with <a href="demo/rust/src/implementation/time_series.rs">Rust logic</a></figcaption>

<img src="demo/screenshots/demo3.png" alt="Qt Quick Controls 2 UI with Rust logic"/>
<figcaption><a href="demo/qml/FileTreeView2.qml">Qt Quick Controls 2 UI</a> with <a href="demo/rust/src/implementation/file_system_tree.rs">Rust logic</a></figcaption>