[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; } } }

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