基于画布的WPF自定义控件，初始化代码放在哪里？

public class CustomControl : Control
{
    public CustomControl()
    {
        // 初始化代码
        // 设置默认属性值
        this.Width = 100;
        this.Height = 50;
        
        // 注册事件处理程序
        this.MouseLeftButtonDown += CustomControl_MouseLeftButtonDown;
        
        // 创建子控件
        var childControl = new Button();
        // 设置子控件属性
        childControl.Content = "Click me";
        // 将子控件添加到控件中
        this.Content = childControl;
    }
    
    private void CustomControl_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        // 鼠标左键点击事件处理逻辑
    }
}