原文:wpf 状态栏图标背景闪烁提醒 FlashWindowEx
using System;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;
namespace XCommon {
public static class WindowExtensions {
#region Window Flashing API Stuff
private const UInt32 FLASHW_STOP = 0; //Stop flashing. The system restores the window to its original state.
private const UInt32 FLASHW_CAPTION = 1; //Flash the window caption.
private const UInt32 FLASHW_TRAY = 2; //Flash the taskbar button.
private const UInt32 FLASHW_ALL = 3; //Flash both the window caption and taskbar button.
private const UInt32 FLASHW_TIMER = 4; //Flash continuously, until the FLASHW_STOP flag is set.
private const UInt32 FLASHW_TIMERNOFG = 12; //Flash continuously until the window comes to the foreground.
[StructLayout(LayoutKind.Sequential)]
private struct FLASHWINFO {
public UInt32 cbSize; //The size of the structure in bytes.
public IntPtr hwnd; //A Handle to the Window to be Flashed. The window can be either opened or minimized.
public UInt32 dwFlags; //The Flash Status.
public UInt32 uCount; // number of times to flash the window
public UInt32 dwTimeout; //The rate at which the Window is to be flashed, in milliseconds. If Zero, the function uses the default cursor blink rate.
}
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool FlashWindowEx(ref FLASHWINFO pwfi);
[DllImport("user32.dll")]
private static extern IntPtr GetForegroundWindow();
#endregion
public static void FlashWindow(this Window win, UInt32 count = UInt32.MaxValue, UInt32 interval = 100) {
//Don't flash if the window is active
if (win.IsActive) return;
WindowInteropHelper h = new WindowInteropHelper(win);
FLASHWINFO info = new FLASHWINFO {
hwnd = h.Handle,
dwFlags = FLASHW_ALL | FLASHW_TIMER,
uCount = count,
dwTimeout = interval
};
info.cbSize = Convert.ToUInt32(Marshal.SizeOf(info));
FlashWindowEx(ref info);
}
public static void StopFlashingWindow(this Window win) {
WindowInteropHelper h = new WindowInteropHelper(win);
FLASHWINFO info = new FLASHWINFO();
info.hwnd = h.Handle;
info.cbSize = Convert.ToUInt32(Marshal.SizeOf(info));
info.dwFlags = FLASHW_STOP;
info.uCount = UInt32.MaxValue;
info.dwTimeout = 0;
FlashWindowEx(ref info);
}
}
}使用方法：
开始闪烁：FlashWindow(this Window win, UInt32 count = UInt32.MaxValue, UInt32 interval = 100)
win 主窗体，count 闪动次数微信是4次，interval 闪烁间隔毫秒
例子：WindowExtensions.FlashWindow(this, 5, 500);
停止闪烁：
private void window_OnActivated(object sender, EventArgs e) {
if (this.IsActive) {
if (notificationTimer.Enabled) {
notificationTimer.Enabled = false; // 停止闪烁通知区域图标
notifyIcon.Icon = icons[0];
}
WindowExtensions.StopFlashingWindow(this); // 停止闪烁任务栏
}
}