implement proper display of generic shortcut keys such as OemQuestion

src/Main/Base/Project/Src/Commands/MenuItemBuilders.cs

@@ -442,7 +442,7 @@ namespace ICSharpCode.SharpDevelop.Commands
 						SD.Workbench.MainWindow.InputBindings.Add(
 							new System.Windows.Input.InputBinding(item.Command, kg)
 						);
-						item.InputGestureText = kg.GetDisplayStringForCulture(Thread.CurrentThread.CurrentUICulture);
+						item.InputGestureText = MenuService.GetDisplayStringForShortcut(kg);
 					}
 					
 					list.Add(item);

src/Main/ICSharpCode.Core.Presentation/Menu/MenuCheckBox.cs

@@ -34,7 +34,7 @@ namespace ICSharpCode.Core.Presentation
 			if (!string.IsNullOrEmpty(codon.Properties["shortcut"])) {
 				KeyGesture kg = MenuService.ParseShortcut(codon.Properties["shortcut"]);
 				MenuCommand.AddGestureToInputBindingOwner(inputBindingOwner, kg, this.Command, null);
-				this.InputGestureText = kg.GetDisplayStringForCulture(Thread.CurrentThread.CurrentUICulture);
+				this.InputGestureText = MenuService.GetDisplayStringForShortcut(kg);
 			}
 		}
 

src/Main/ICSharpCode.Core.Presentation/Menu/MenuCommand.cs

@@ -29,7 +29,7 @@ namespace ICSharpCode.Core.Presentation
 			if (!string.IsNullOrEmpty(codon.Properties["shortcut"])) {
 				KeyGesture kg = MenuService.ParseShortcut(codon.Properties["shortcut"]);
 				AddGestureToInputBindingOwner(inputBindingOwner, kg, this.Command, GetFeatureName());
-				this.InputGestureText = kg.GetDisplayStringForCulture(Thread.CurrentThread.CurrentUICulture);
+				this.InputGestureText = MenuService.GetDisplayStringForShortcut(kg);
 			}
 		}
 		

src/Main/ICSharpCode.Core.Presentation/Menu/MenuService.cs

@@ -4,7 +4,11 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Controls.Primitives;
@@ -240,5 +244,79 @@ namespace ICSharpCode.Core.Presentation
 		{
 			return (KeyGesture)new KeyGestureConverter().ConvertFromInvariantString(text.Replace('|', '+'));
 		}
+		
+		public static string GetDisplayStringForShortcut(KeyGesture kg)
+		{
+			string old = kg.GetDisplayStringForCulture(Thread.CurrentThread.CurrentUICulture);
+			string text = KeyCodeConversion.KeyToUnicode(kg.Key.ToKeys());
+			if (text != null) {
+				if ((kg.Modifiers & ModifierKeys.Alt) == ModifierKeys.Alt)
+					text = "Alt+" + text;
+				if ((kg.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
+					text = "Shift+" + text;
+				if ((kg.Modifiers & ModifierKeys.Control) == ModifierKeys.Control)
+					text = "Ctrl+" + text;
+				if ((kg.Modifiers & ModifierKeys.Windows) == ModifierKeys.Windows)
+					text = "Win+" + text;
+				return text;
+			}
+			return old;
+		}
+	}
+	
+	static class KeyCodeConversion
+	{
+		[DllImport("user32.dll")]
+		static extern int ToUnicodeEx(uint wVirtKey, uint wScanCode, byte []
+		                              lpKeyState, [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pwszBuff,
+		                              int cchBuff, uint wFlags, IntPtr dwhkl);
+
+		[DllImport("user32.dll")]
+		static extern bool GetKeyboardState(byte[] pbKeyState);
+		
+		[DllImport("user32.dll")]
+		static extern uint MapVirtualKeyEx(uint uCode, uint uMapType, IntPtr dwhkl);
+
+		[DllImport("user32.dll")]
+		static extern IntPtr GetKeyboardLayout(uint idThread);
+
+		/// <remarks>Only works with Windows.Forms.Keys. The WPF Key enum seems to be horribly distorted!</remarks>
+		public static string KeyToUnicode(WinForms.Keys key)
+		{
+			StringBuilder sb = new StringBuilder(255);
+			byte[] keyState  = new byte[255];
+			IntPtr hkl = GetKeyboardLayout(0);
+			
+			if (!GetKeyboardState(keyState)) return null;
+			
+			uint scanCode = MapVirtualKeyEx((uint)key, 0, hkl);
+			if (scanCode < 1) return null;
+			
+			ClearKeyboardBuffer(hkl);
+			int len = ToUnicodeEx((uint)key, scanCode, keyState, sb, sb.Capacity, 0, hkl);
+			if (len > 0)
+				return sb.ToString(0, len).ToUpper();
+			
+			ClearKeyboardBuffer(hkl);
+			return null;
+		}
+		
+		static void ClearKeyboardBuffer(IntPtr hkl)
+		{
+			StringBuilder sb = new StringBuilder(10);
+			uint key = (uint)WinForms.Keys.Space;
+			int rc;
+			do {
+				rc = ToUnicodeEx(key, MapVirtualKeyEx(key, 0, hkl), new byte[255], sb, sb.Capacity, 0, hkl);
+			} while(rc < 0);
+		}
+		
+		public static WinForms.Keys ToKeys(this Key key)
+		{
+			WinForms.Keys result;
+			if (Enum.TryParse(key.ToString(), out result))
+				return result;
+			return WinForms.Keys.None;
+		}
 	}
 }

src/Main/ICSharpCode.Core.Presentation/ToolBar/ToolBarButton.cs

@@ -42,7 +42,7 @@ namespace ICSharpCode.Core.Presentation
 			if (!string.IsNullOrEmpty(codon.Properties["shortcut"])) {
 				KeyGesture kg = MenuService.ParseShortcut(codon.Properties["shortcut"]);
 				MenuCommand.AddGestureToInputBindingOwner(inputBindingOwner, kg, this.Command, GetFeatureName());
-				this.inputGestureText = kg.GetDisplayStringForCulture(Thread.CurrentThread.CurrentUICulture);
+				this.inputGestureText = MenuService.GetDisplayStringForShortcut(kg);
 			}
 			UpdateText();