[C#/WPF] Window 클래스 : 투명 윈도우 만들기

▶ MARGIN.cs

using System.Windows;

namespace TestProject
{
    /// <summary>
    /// 마진
    /// </summary>
    public struct MARGIN
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region Field

        /// <summary>
        /// 왼쪽
        /// </summary>
        public int Left;

        /// <summary>
        /// 오른쪽
        /// </summary>
        public int Right;

        /// <summary>
        /// 위쪽
        /// </summary>
        public int Top;

        /// <summary>
        /// 아래쪽
        /// </summary>
        public int Bottom;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MAGIN(thickness)

        /// <summary>
        /// 생성자
        /// </summary>
        /// <param name="thickness">두께</param>
        public MARGIN(Thickness thickness)
        {
            Left   = (int)thickness.Left;
            Right  = (int)thickness.Right;
            Top    = (int)thickness.Top;
            Bottom = (int)thickness.Bottom;
        }

        #endregion
    }
}

 

728x90

 

▶ GlassHelper.cs

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

namespace TestProject
{
    /// <summary>
    /// 글래스 헬퍼
    /// </summary>
    public class GlassHelper
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Import
        ////////////////////////////////////////////////////////////////////////////////////////// Static
        //////////////////////////////////////////////////////////////////////////////// Private

        #region Aero 기능 사용하기 - DwmExtendFrameIntoClientArea(windowHandle, margin)

        /// <summary>
        /// Aero 기능 사용하기
        /// </summary>
        /// <param name="windowHandle">윈도우 핸들</param>
        /// <param name="margin">마진</param>
        [DllImport("dwmapi.dll", PreserveSig=false)]
        private static extern void DwmExtendFrameIntoClientArea(IntPtr windowHandle, ref MARGIN margin);

        #endregion
        #region Aero 기능 사용 가능 여부 구하기 - DwmIsCompositionEnabled()

        /// <summary>
        /// Aero 기능 사용 가능 여부 구하기
        /// </summary>
        /// <returns>Aero 기능 사용 가능 여부</returns>
        [DllImport("dwmapi.dll", PreserveSig=false)]
        private static extern bool DwmIsCompositionEnabled();

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Static
        //////////////////////////////////////////////////////////////////////////////// Public

        #region 글래스 프레임 확장하기 - ExtendGlassFrame(window, marginThickness)

        /// <summary>
        /// 글래스 프레임 확장하기
        /// </summary>
        /// <param name="window">윈도우</param>
        /// <param name="marginThickness">마진 두께</param>
        /// <returns>처리 결과</returns>
        public static bool ExtendGlassFrame(Window window, Thickness marginThickness)
        {
            if(!DwmIsCompositionEnabled())
            {
                return false;
            }

            IntPtr windowHandle = new WindowInteropHelper(window).Handle;

            if(windowHandle == IntPtr.Zero)
            {
                throw new InvalidOperationException("글래스 확장 전 윈도우가 표시되어야 합니다.");
            }

            window.Background = Brushes.Transparent;

            HwndSource.FromHwnd(windowHandle).CompositionTarget.BackgroundColor = Colors.Transparent;

            MARGIN margins = new MARGIN(marginThickness);

            DwmExtendFrameIntoClientArea(windowHandle, ref margins);

            return true;
        }

        #endregion
    }
}

 

300x250

 

▶ MainWindow.xaml

<Window x:Class="TestProject.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Height="600"
    Title="투명 윈도우 만들기">
</Window>

 

▶ MainWindow.xaml.cs

using System;
using System.Windows;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public partial class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainWindow()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainWindow()
        {
            InitializeComponent();
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Protected

        #region 소스 초기화시 처리하기 - OnSourceInitialized(e)

        /// <summary>
        /// 소스 초기화시 처리하기
        /// </summary>
        /// <param name="e">이벤트 인자</param>
        protected override void OnSourceInitialized(EventArgs e)
        {
            base.OnSourceInitialized(e);

            GlassHelper.ExtendGlassFrame(this, new Thickness(-1));
        }

        #endregion
    }
}

※ 윈도우 7에서 작동되었으나 윈도우 10에서는 작동되지 않았다.