摘要

在項目中有這樣的一個需求，需要在一臺宣傳機器上循環播放一段視頻，並在體驗的用戶單擊鼠標左鍵的時候推出全屏，可以讓用戶體驗電腦的其它功能。

解決方案

考慮到都是windows系統的，所以采用了windows自帶的播放器，Windows Media Player Com組件作為視頻播放器。

如圖

但是，為了更好滿足需求，下面的播放控制面板需要隱藏，該怎麽做呢？最後找到解決方案，設置播放器屬性

windowsMediaPlay.uiMode = "none";

循環播放的代碼，這裏為播放器添加播放列表，代碼如下：

 string[] filePaths = Directory.GetFiles(_videoDirPath).Where(x => x.EndsWith("
 
.mp4") || x.EndsWith(".wmv")).ToArray();
                //添加循環播放列表
                foreach (var item in filePaths)
                {
                    windowsMediaPlay.currentPlaylist.appendItem(windowsMediaPlay.newMedia(item));
                }
                //不再任務欄顯示
                this.ShowInTaskbar = false
 
;
                this.FormClosing += VideoFrm_FormClosing;
                windowsMediaPlay.ClickEvent += windowsMediaPlay_ClickEvent;
                windowsMediaPlay.KeyUpEvent += windowsMediaPlay_KeyUpEvent;
                windowsMediaPlay.StatusChange += windowsMediaPlay_StatusChange;
                windowsMediaPlay.ErrorEvent 
 
+= windowsMediaPlay_ErrorEvent;
                windowsMediaPlay.DoubleClickEvent += windowsMediaPlay_DoubleClickEvent;
                windowsMediaPlay.Ctlcontrols.play();

那麽，如何在用戶單擊的時候，讓程序最小化？

註意

在uiMode = "none"的情況下，單擊會觸發視頻暫停的事件，並不會退出。視頻暫停，是不是視頻狀態變化了呢？所以在截獲單擊視頻事件，我們完全可以在視頻暫停的時候，對其進行截獲。statechange事件對應的方法如下：

       void windowsMediaPlay_StatusChange(object sender, EventArgs e)
        {
            /*  
             * 0 Undefined Windows Media Player is in an undefined state.(未定義) 
               1 Stopped Playback of the current media item is stopped.(停止) 
               2 Paused Playback of the current media item is paused. When a media item is paused, resuming 
playback begins from the same location.(停留) 
               3 Playing The current media item is playing.(播放) 
               4 ScanForward The current media item is fast forwarding. 
               5 ScanReverse The current media item is fast rewinding. 
               6 Buffering The current media item is getting additional data from the server.(轉換) 
               7 Waiting Connection is established, but the server is not sending data. Waiting for session to begin.(暫停) 
               8 MediaEnded Media item has completed playback. (播放結束) 
               9 Transitioning Preparing new media item. 
               10 Ready Ready to begin playing.(準備就緒) 
               11 Reconnecting Reconnecting to stream.(重新連接) 
           */
            try
            {
                switch (windowsMediaPlay.playState)
                {
                    case WMPLib.WMPPlayState.wmppsBuffering:
                        break;
                    case WMPLib.WMPPlayState.wmppsLast:
                        break;
                    case WMPLib.WMPPlayState.wmppsMediaEnded:
                        break;
                    case WMPLib.WMPPlayState.wmppsPaused:
                        //單擊了視頻則退出
                        HideVideo();
                        break;
                    case WMPLib.WMPPlayState.wmppsPlaying:
                        if (!windowsMediaPlay.fullScreen)
                        {
                            windowsMediaPlay.fullScreen = true;
                        }
                        break;
                    case WMPLib.WMPPlayState.wmppsReady:
                        break;
                    case WMPLib.WMPPlayState.wmppsReconnecting:
                        break;
                    case WMPLib.WMPPlayState.wmppsScanForward:
                        break;
                    case WMPLib.WMPPlayState.wmppsScanReverse:
                        break;
                    case WMPLib.WMPPlayState.wmppsStopped:
                        break;
                    case WMPLib.WMPPlayState.wmppsTransitioning:
                        break;
                    case WMPLib.WMPPlayState.wmppsUndefined:
                        break;
                    case WMPLib.WMPPlayState.wmppsWaiting:

                        break;
                    default:
                        break;
                }
            }
            catch (Exception ex)
            {
                LogInfoData.WriteLog(new LogInfo
                           {
                               Dt = DateTime.Now,
                               IsSend = false,
                               Message = ex.Message,
                               Op = "media_state_change_err"
                           });
            }
        }

關於雙擊全屏截獲的邏輯也可以在這裏處理，雙擊之前肯定會有一次單擊，所以在這裏也能進行雙擊最大化的處理。

[Winform]Media Player播放控制面板控制，單擊事件截獲