當需要報警時，就彈出對話方塊，並像QQ一樣不停地快閃記憶體，並且發出報警聲 C#

[System.Runtime.InteropServices.DllImportAttribute("user32.dll")]
        public static extern bool FlashWindow(IntPtr handle, bool bInvert);

        private void timer1_Tick(object sender, EventArgs e)
        {
            try
            {
                FlashWindow(this.Handle, true);
                if (enableAlarm && alarmCount>0)
                {
                    string path = System.Windows.Forms.Application.StartupPath + @"/Resources/ALARM8.WAV";
                    MediaSound.PlaySound(path, true, true, false);
                    this.alarmCount--;
                }
            }
            catch (Exception ex)
            {
                AirMonitorSysEventLog.WriteLog("FormAlarm--timer1_Tick: " + ex.Message, System.Diagnostics.EventLogEntryType.Error, AirMonitorSysEventLog.GeneralErrorEventId);
            }
        }
 

注意，這個Timer 's interval is 100 ms,

 public class MediaSound
    {
        #region 報警聲音
        /* 當例如監測xx大於xx
* 通過PlaySound(”msg.wav”, true, true, false)方法實現連續報警
* 還可以同時彈出視窗提醒之類的資訊.
* 關閉報警通過方法StopSound()實現就可以了.*/

        [DllImport("winmm.dll", EntryPoint = "PlaySound")]
        private static extern bool Win32_PlaySound(string pszSound, IntPtr hmod, uint fdwSound);

        /// <summary>
        /// 播放一個wav音訊檔案
        /// </summary>
        /// <param name="path"></param>
        /// <param name="asynchronous"></param>
        /// <param name="loop"></param>
        /// <param name="doNotStopPlay"></param>
        public static void PlaySound(string path, bool asynchronous, bool loop, bool doNotStopPlay)
        {
            Win32_PlaySound(path, IntPtr.Zero, (uint)((asynchronous ?
            PlaySoundMessage.SND_ASYNC : PlaySoundMessage.SND_SYNC) | (loop ?
            PlaySoundMessage.SND_LOOP : 0) | (doNotStopPlay ?
            PlaySoundMessage.SND_NOSTOP : 0) | PlaySoundMessage.SND_FILENAME));
        }

        /// <summary>
        /// 停止播放
        /// </summary> 
        public static void StopSound()
        {
            Win32_PlaySound(null, IntPtr.Zero, 0);
        }

        [Flags()]
        internal enum PlaySoundMessage
        {
            SND_SYNC = 0x0000,
            SND_ASYNC = 0x0001,
            SND_LOOP = 0x0008,
            SND_NOSTOP = 0x0010,
            SND_FILENAME = 0x00020000
        }
        #endregion

    }