WPF NotifyIcon

--------------
Initial import

git-svn-id: https://svn.evolvesoftware.ch/repos/evolve.net/WPF/NotifyIcon@52 9f600761-6f11-4665-b6dc-0185e9171623

Source/NotifyIconWpf/Interop/TrayLocator.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Runtime.InteropServices;
+
+namespace Hardcodet.Wpf.TaskbarNotification.Interop
+{
+  public struct Rect
+  {
+    public int left;
+    public int top;
+    public int right;
+    public int bottom;
+    public override string ToString()
+    {
+      return "(" + left + ", " + top + ") --> (" + right + ", " + bottom + ")";
+    }
+  }
+
+  public struct TaskbarInfo
+  {
+    public int cbSize;
+    public IntPtr WindowHandle;
+    public int uCallbackMessage;
+    public TaskbarPosition Position;
+    public Rect Rectangle;
+    public IntPtr lParam;
+  }
+
+
+
+  public enum TaskbarPosition
+  {
+    Left = 0,
+    Top,
+    Right,
+    Bottom
+  }
+
+
+
+
+  /// <summary>
+  /// Locates the position of the tray area.
+  /// </summary>
+  public class TrayLocator
+  {
+    public enum ABMsg
+    {
+      ABM_NEW = 0,
+      ABM_REMOVE = 1,
+      ABM_QUERYPOS = 2,
+      ABM_SETPOS = 3,
+      ABM_GETSTATE = 4,
+      ABM_GETTASKBARPOS = 5,
+      ABM_ACTIVATE = 6,
+      ABM_GETAUTOHIDEBAR = 7,
+      ABM_SETAUTOHIDEBAR = 8,
+      ABM_WINDOWPOSCHANGED = 9,
+      ABM_SETSTATE = 10
+    }
+
+    public enum ABNotify
+    {
+      ABN_STATECHANGE = 0,
+      ABN_POSCHANGED,
+      ABN_FULLSCREENAPP,
+      ABN_WINDOWARRANGE
+    }
+
+    [DllImport("shell32.dll", EntryPoint = "SHAppBarMessage", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
+    public static extern int SHAppBarMessage(int dwMessage, ref TaskbarInfo pData);
+
+
+    /// <summary>
+    /// Determines the current location of the taskbar.
+    /// </summary>
+    /// <returns></returns>
+    public static TaskbarInfo GetTaskbarInformation()
+    {
+      TaskbarInfo tbInfo = new TaskbarInfo();
+      tbInfo.cbSize = Marshal.SizeOf(tbInfo);
+      
+      //retrieve the bounding rectangle of the Windows taskbar.
+      SHAppBarMessage((int)ABMsg.ABM_GETTASKBARPOS, ref tbInfo);
+
+      return tbInfo;
+    }
+
+  }
+}