WPF创建无边框窗体

WPF自带的窗体边框和标题栏只包含基础的功能，无法满足项目的视觉效果，经常会遇到需要去掉框架自带标题栏的情况。

现总结如下：
首先，通过WindowChrome自定义窗口样式：

    <WindowChrome.WindowChrome>
        <WindowChrome CornerRadius="10" GlassFrameThickness="10"  ResizeBorderThickness="4" CaptionHeight="0" />
    </WindowChrome.WindowChrome>

其次，使用一个StackPanel来模拟标题栏的功能：

最后，通过代码定义行为：

public partial class MainWindow : Window
    {
    
    
        public MainWindow()
        {
    
    
            InitializeComponent();
            this.Loaded += MainWindow_Loaded;
        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
    
    
            Window_StateChanged(null, null);
        }

        private void StackPanel_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
    
    
            if (e.ClickCount == 2)
            {
    
    
                if (this.ResizeMode != ResizeMode.CanResize && this.ResizeMode != ResizeMode.CanResizeWithGrip)
                {
    
    
                    return;
                }

                if (this.WindowState == WindowState.Maximized)
                {
    
    
                    this.WindowState = WindowState.Normal;
                }
                else
                {
    
    
                    this.WindowState = WindowState.Maximized;
                }
            }
            else
            {
    
    
                this.DragMove();
            }
        }

        private void StackPanel_MouseMove(object sender, MouseEventArgs e)
        {
    
    
            if (e.LeftButton == MouseButtonState.Pressed)
            {
    
    
                var mousePostion = e.MouseDevice.GetPosition(this);
                var point = PointToScreen(mousePostion);
                this.Left = point.X - (this.RestoreBounds.Width * 0.5);
                this.Top = point.Y;
                this.WindowState = WindowState.Normal;
                this.DragMove();
            }
        }

        private void Window_StateChanged(object sender, EventArgs e)
        {
    
    
            if (this.WindowState == WindowState.Maximized)
            {
    
    
                this.BorderThickness = new Thickness(8);
            }
            else
            {
    
    
                this.BorderThickness = new Thickness(0);
            }
        }
    }

（注意：当窗体最大化时，内容与屏幕会有一个负8的margin，所以在Window_StateChanged里判断当Maximized时手动补偿正8的margin。）

效果：

无边框窗体样式