安装QT5，过程省略

安装rust，过程省略

创建工程

cargo new slint_demo

在cargo.toml添加依赖

[dependencies]
slint = "1.1.1"

[build-dependencies]
slint-build = "1.1.1"

创建build.rs

fn main() {
    slint_build::compile("ui/main.slint").unwrap();

    println!("cargo:rustc-link-lib=static=Qt5Core");
    println!("cargo:rustc-link-search=native=D:/Qt/qt/5.15.2/msvc2019_64/lib");
}

创建UI文件main.slint

import {GroupBox, LineEdit, Button} from "std-widgets.slint";

export component MainWindow inherits Window {
    title: "slint demo";
    width: 640px;
    height: 480px;

    VerticalLayout { 
        alignment:start;
        padding-left: 25px;
        padding-right: 25px;

        Text { 
            font-size: 27px;
            font-weight: 700;
            color: #6776FF;  
         }

        GroupBox{
            title:"用户名";
            LineEdit {
                placeholder-text: "请输入用户名";
            }
        }

        Button {
            text: "登录";
            clicked => { self.text = "单击"; }
        }

    }
}

创建main.rs

slint::include_modules!();

fn main() {
   MainWindow::new().unwrap().run().unwrap();
}

目录结构

编译

cargo build

运行

cargo run

把qt的dll文件路径加入PATH环境变量

set PATH=D:\Qt\qt\5.15.2\msvc2019_64\bin;%PATH%