C#WPF透明窗口带边框

Question

我想制作一个透明的简单应用程序,但保留"普通"边框,关闭按钮,最小化和最大化按钮.

我知道如何使用标准使窗口透明

<Window
    WindowStyle="None"
    AllowsTransparency="True"
    Background="Transparent">
</Window>

但这会删除边框和右上角的按钮.我读了这个帖子,

带边框的透明窗口

哪种解决方案,但实际上,我只是希望能够保持标准边框,如果我没有使窗口透明.我可以移动窗口,调整大小,关闭等等的方法......这可能吗？

Answer 1

我扔一起快速TransparencyConverter类基于本教程Microsoft.com上,你可以使用这个目的:

using System;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;

namespace WpfApplication2
{
    class TransparencyConverter
    {
        private readonly Window _window;

        public TransparencyConverter(Window window)
        {
            _window = window;
        }

        public void MakeTransparent()
        {
            var mainWindowPtr = new WindowInteropHelper(_window).Handle;
            var mainWindowSrc = HwndSource.FromHwnd(mainWindowPtr);
            if (mainWindowSrc != null)
                if (mainWindowSrc.CompositionTarget != null)
                    mainWindowSrc.CompositionTarget.BackgroundColor = System.Windows.Media.Color.FromArgb(0, 0, 0, 0);

            var margins = new Margins
            {
                cxLeftWidth = 0,
                cxRightWidth = Convert.ToInt32(_window.Width) * Convert.ToInt32(_window.Width),
                cyTopHeight = 0,
                cyBottomHeight = Convert.ToInt32(_window.Height) * Convert.ToInt32(_window.Height)
            };

            if (mainWindowSrc != null) DwmExtendFrameIntoClientArea(mainWindowSrc.Handle, ref margins);
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct Margins
        {
            public int cxLeftWidth;
            public int cxRightWidth;
            public int cyTopHeight;
            public int cyBottomHeight;
        }

        [DllImport("DwmApi.dll")]
        public static extern int DwmExtendFrameIntoClientArea(IntPtr hwnd, ref Margins pMarInset);
    }
}

完成此操作后,将Transparent Background属性添加到XAML并订阅Window_Loaded事件并调用MakeTransparent方法:

<Window etc etc Background="Transparent" Loaded="Window_Loaded">

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    var transparencyConverter = new TransparencyConverter(this);
    transparencyConverter.MakeTransparent();
}

屏幕截图如下: