C# 调用SendMessage刷新任务栏图标(强制结束时图标未消失)

 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         /// 刷新任务栏图标  3         /// </summary>  4         public static void RefreshTaskbarIcon()  5         {  6             //任务栏窗口  7             int one = FindWindow("Shell_TrayWnd", null);  8             //任务栏右边托盘图标+时间区  9             int two = FindWindowEx(one, 0, "TrayNotifyWnd", null); 10             //不同系统可能有可能没有这层 11             int three = FindWindowEx(two, 0, "SysPager", null); 12             //托盘图标窗口 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                 //从任务栏左上角从左到右 MOUSEMOVE一遍，所有图标状态会被更新 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         }