[C#] WPF App의 System Menu에 사용자 메뉴 추가하기

C#의 WPF Application 에서 System 메뉴에 사용자 메뉴를 추가하는 방법이다. 이 방법은 Add System Menu Items to WPF Window using Win32 API에서 알게된 방법으로 Form Application과 다소 다르다. Win32 API를 사용하는 것은 동일하게 보이나 메세지를 핸들링하는 부분이 다른 것 같다.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Runtime.InteropServices;
using System.Windows.Interop;

// For Custom menu on System menu
//using System;
//using System.Windows;
//using System.Runtime.InteropServices;
//using System.Windows.Interop;

namespace MyWPFApp
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
#region Win32 API Stuff
        // Define the Win32 API methods we are going to use
        [DllImport("user32.dll")]
        private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);

        [DllImport("user32.dll")]
        private static extern bool InsertMenu(IntPtr hMenu, Int32 wPosition, 
            Int32 wFlags, Int32 wIDNewItem, string lpNewItem);

        /// Define our Constants we will use
        public const Int32 WM_SYSCOMMAND    = 0x112;
        public const Int32 MF_SEPARATOR     = 0x800;
        public const Int32 MF_BYPOSITION    = 0x400;
        public const Int32 MF_STRING        = 0x000;
#endregion

        // The constants we'll use to identify our custom system menu items
        public const Int32 _SettingsSysMenuID   = 1000;
        public const Int32 _AboutSysMenuID      = 1001;

        /// <summary>
        /// This is the Win32 Interop Handle for this Window
        /// </summary>
        public IntPtr Handle
        {
            get
            {
                return new WindowInteropHelper(this).Handle;
            }
        }

        public MainWindow()
        {
            InitializeComponent();

            /// 아래 코드는 필요 없어 보임. 이벤트 핸들러가 아닌
            /// 임의의 함수를 할당할 때 필요한 것으로 보임
            //this.Loaded += new RoutedEventHandler(wndMain_Loaded);
        }

        private void wndMain_Loaded(object sender, RoutedEventArgs e)
        {
            /// Get the Handle for the Forms System Menu
            IntPtr systemMenuHandle = GetSystemMenu(this.Handle, false);

            /// Create our new System Menu items just before the Close menu item
            // Add a menu seperator
            InsertMenu(systemMenuHandle, 5, MF_BYPOSITION | MF_SEPARATOR, 
                0, string.Empty);
            // Add Setting Menu
            InsertMenu(systemMenuHandle, 6, MF_BYPOSITION, 
                _SettingsSysMenuID, "Settings...");
            // Add About Menu
            InsertMenu(systemMenuHandle, 7, MF_BYPOSITION, 
                _AboutSysMenuID, "About...");

            // Attach our WndProc handler to this Window
            HwndSource source = HwndSource.FromHwnd(this.Handle);
            source.AddHook(new HwndSourceHook(WndProc));
        }

        private static IntPtr WndProc(IntPtr hwnd, int msg, 
            IntPtr wParam, IntPtr lParam, ref bool handled)
        {
            // Check if a System Command has been executed
            if (msg == WM_SYSCOMMAND)
            {
                /// Execute the appropriate code for 
                /// the System Menu item that was clicked
                switch (wParam.ToInt32())
                {
                    case _SettingsSysMenuID:
                        MessageBox.Show("\"Settings\" was clicked");
                        handled = true;
                        break;
                    case _AboutSysMenuID:
                        MessageBox.Show("\"About\" was clicked");
                        handled = true;
                        break;
                }
            }

            return IntPtr.Zero;
        }
    }
}

실행 결과 화면

&n

Original Post : http://neodreamer-dev.tistory.com/588