关联WMP播放状态事件(PlayStateChangeEvent)

[Floatping原创]

以下是选取的部分代码，红色部分指明了为JarulyPlayer实例加入PlayStateChange事件和具体的方法体：

// // JarulyPlayer // this.JarulyPlayer = new AxMicrosoft.MediaPlayer.Interop.AxWindowsMediaPlayer(); this.JarulyPlayer.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right))); this.JarulyPlayer.ContextMenuStrip = this.contextMenuStrip1; this.JarulyPlayer.Enabled = true; this.JarulyPlayer.Location = new System.Drawing.Point(0, 21); this.JarulyPlayer.Margin = new System.Windows.Forms.Padding(0); this.JarulyPlayer.MinimumSize = new System.Drawing.Size(400, 300); this.JarulyPlayer.Name = "JarulyPlayer"; this.JarulyPlayer.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("JarulyPlayer.OcxState"))); this.JarulyPlayer.Size = new System.Drawing.Size(438, 340); this.JarulyPlayer.Text = "JarulyPlayer"; this.JarulyPlayer.PlayStateChange += new AxMicrosoft.MediaPlayer.Interop._WMPOCXEvents_PlayStateChangeEventHandler(JarulyPlayer_PlayStateChange);

WMP9预置了一个“ PlayStateChange”这样的事件接口，在VS.NET中用_WMPOCXEvents_PlayStateChangeEventHandler方法来实现。要注意的是它们所用的语法。下面是具体实现该接口的方法体：

public void JarulyPlayer_PlayStateChange(object sender, AxMicrosoft.MediaPlayer.Interop._WMPOCXEvents_PlayStateChangeEvent e) { //TODO: 添加事件处理代码; MessageBox.Show("Changed"); }

附WMP核心类属性和方法：http://www.webtropy.com/articles/art14-2.asp?Interop=WMPCore