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/WinApi.cs

@@ -0,0 +1,80 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Hardcodet.Wpf.TaskbarNotification.Interop
+{
+  /// <summary>
+  /// Win32 API imports.
+  /// </summary>
+  internal static class WinApi
+  {
+    /// <summary>
+    /// Creates, updates or deletes the taskbar icon.
+    /// </summary>
+    [DllImport("shell32.Dll")]
+    public static extern bool Shell_NotifyIcon(NotifyCommand cmd, [In]ref NotifyIconData data);
+
+
+    /// <summary>
+    /// Creates the helper window that receives messages from the taskar icon.
+    /// </summary>
+    [DllImport("USER32.DLL", EntryPoint = "CreateWindowExW", SetLastError = true)]
+    public static extern IntPtr CreateWindowEx(int dwExStyle, [MarshalAs(UnmanagedType.LPWStr)] string lpClassName,
+                           [MarshalAs(UnmanagedType.LPWStr)] string lpWindowName, int dwStyle, int x, int y,
+                           int nWidth, int nHeight, uint hWndParent, int hMenu, int hInstance,
+                           int lpParam);
+
+
+    /// <summary>
+    /// Processes a default windows procedure.
+    /// </summary>
+    [DllImport("USER32.DLL")]
+    public static extern long DefWindowProc(IntPtr hWnd, uint msg, uint wparam, uint lparam);
+    
+    /// <summary>
+    /// Registers the helper window class.
+    /// </summary>
+    [DllImport("USER32.DLL", EntryPoint = "RegisterClassW", SetLastError = true)]
+    public static extern short RegisterClass(ref WindowClass lpWndClass);
+
+    /// <summary>
+    /// Registers a listener for a window message.
+    /// </summary>
+    /// <param name="lpString"></param>
+    /// <returns></returns>
+    [DllImport("User32.Dll", EntryPoint = "RegisterWindowMessageW")]
+    public static extern uint RegisterWindowMessage([MarshalAs(UnmanagedType.LPWStr)] string lpString);
+
+    /// <summary>
+    /// Used to destroy the hidden helper window that receives messages from the
+    /// taskbar icon.
+    /// </summary>
+    /// <param name="hWnd"></param>
+    /// <returns></returns>
+    [DllImport("USER32.DLL", SetLastError = true)]
+    public static extern bool DestroyWindow(IntPtr hWnd);
+
+
+    /// <summary>
+    /// Gives focus to a given window.
+    /// </summary>
+    /// <param name="hWnd"></param>
+    /// <returns></returns>
+    [DllImport("USER32.DLL")]
+    public static extern bool SetForegroundWindow(IntPtr hWnd);
+
+
+    /// <summary>
+    /// Gets the maximum number of milliseconds that can elapse between a
+    /// first click and a second click for the OS to consider the
+    /// mouse action a double-click.
+    /// </summary>
+    /// <returns>The maximum amount of time, in milliseconds, that can
+    /// elapse between a first click and a second click for the OS to
+    /// consider the mouse action a double-click.</returns>
+    [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+    public static extern int GetDoubleClickTime();
+ 
+
+  }
+}