1         [DllImport("user32.dll", EntryPoint = "FindWindow")]
 2         private static extern int FindWindow(string lpszClass, string lpszWindow);
 3         [DllImport("user32.dll", EntryPoint = "FindWindowEx")]
 4         private static extern int FindWindowEx(int hwndParent, int hwndChildAfter, string lpszClass, string lpszWindow);
 5 
 6         [DllImport("user32.dll", EntryPoint = "GetWindowRect")]
 7         private static extern int GetWindowRect(int hwnd, ref System.Drawing.Rectangle lpRect);
 8         [DllImport("user32.dll", EntryPoint = "SendMessage")]
 9         private static extern int SendMessage(int hwnd, int wMsg, int wParam, int lParam);
10 
11         private static readonly int WM_MOUSEMOVE = 512;

 1         /// <summary>
 2         /// 刷新任務欄圖標
 3         /// </summary>
 4         public static void RefreshTaskbarIcon()
 5         {
 6             //任務欄窗口
 7             int one = FindWindow("Shell_TrayWnd", null);
 8             //任務欄右邊托盤圖標+時間區
 9             int two = FindWindowEx(one, 0, "TrayNotifyWnd", null);
10             //不同系統可能有可能沒有這層
11             int three = FindWindowEx(two, 0, "SysPager", null);
12             //托盤圖標窗口
13             int foor;
14             if (three > 0)
15             {
16                 foor = FindWindowEx(three, 0, "ToolbarWindow32", null);
17             }
18             else
19             {
20                 foor = FindWindowEx(two, 0, "ToolbarWindow32", null);
21             }
22             if (foor > 0)
23             {
24                 System.Drawing.Rectangle r = new System.Drawing.Rectangle();
25                 GetWindowRect(foor, ref r);
26                 //從任務欄左上角從左到右 MOUSEMOVE一遍，所有圖標狀態會被更新
27                 for (int x = 0; x < (r.Right - r.Left) - r.X; x++)
28                 {
29                     SendMessage(foor, WM_MOUSEMOVE, 0, (1 << 16) | x);
30                 }
31             }
32         }