如何使用SwiftUI扩展按钮的宽度

struct ButtonWidthModifier: ViewModifier {
    var width: CGFloat

    func body(content: Content) -> some View {
        content
            .frame(width: width)
            .background(Color.blue)
            .foregroundColor(.white)
            .cornerRadius(10)
    }
}

extension View {
    func buttonWidth(_ width: CGFloat) -> some View {
        self.modifier(ButtonWidthModifier(width: width))
    }
}

struct ContentView: View {
    var body: some View {
        VStack {
            Button("点击我") {
                // 按钮点击事件
            }
            .buttonWidth(200) // 设置按钮宽度为200
        }
    }
}