C#刷新托盘图标区域,清理残留托盘图标
类库:
using System; using System.Runtime.InteropServices; public class TaskBarUtil { struct RECT { public int left, top, right, bottom; } public static void RefreshNotificationArea() { var notificationAreaHandle = GetNotificationAreaHandle(); if (notificationAreaHandle == IntPtr.Zero) return; RefreshWindow(notificationAreaHandle); } private static void RefreshWindow(IntPtr windowHandle) { const uint wmMousemove = 0x0200; RECT rect; GetClientRect(windowHandle, out rect); for (var x = 0; x < rect.right; x += 5) for (var y = 0; y < rect.bottom; y += 5) SendMessage( windowHandle, wmMousemove, 0, (y << 16) + x); } private static IntPtr GetNotificationAreaHandle() { const string notificationAreaTitle = "Notification Area"; //const string notificationAreaTitleInWindows7 = "User Promoted Notification Area"; const string notificationAreaTitleInWindows7 = "用户显示的通知区域"; //for chinese version var systemTrayContainerHandle = FindWindowEx(IntPtr.Zero, IntPtr.Zero, "Shell_TrayWnd", string.Empty); var systemTrayHandle = FindWindowEx(systemTrayContainerHandle, IntPtr.Zero, "TrayNotifyWnd", string.Empty); var sysPagerHandle = FindWindowEx(systemTrayHandle, IntPtr.Zero, "SysPager", string.Empty); var notificationAreaHandle = FindWindowEx(sysPagerHandle, IntPtr.Zero, "ToolbarWindow32", notificationAreaTitle); if (notificationAreaHandle == IntPtr.Zero) notificationAreaHandle = FindWindowEx(sysPagerHandle, IntPtr.Zero, "ToolbarWindow32", notificationAreaTitleInWindows7); return notificationAreaHandle; } [DllImport("user32.dll", SetLastError = true)] static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle); [DllImport("user32.dll")] static extern bool GetClientRect(IntPtr handle, out RECT rect); [DllImport("user32.dll", CharSet = CharSet.Auto)] static extern IntPtr SendMessage(IntPtr handle, UInt32 message, Int32 wParam, Int32 lParam); }
使用方法
TaskBarUtil.RefreshNotificationArea();