Description: 开始播放视频
Input: video: 视频对象
videoID: 视频索引
view: 窗口对象
viewID: 窗口索引
userData: 用户数据
Function: typedef VOID (ELOAMAPI *ELOAM_ATTACHCALLBAK)(HELOAMVIDEO video, LONG videoId, HELOAMVIEW view, LONG viewId, LPVOID userData);