C#实现操作ppt使屏幕自动无限循环播放指定幻灯片

gslv06344 2016-05-10 07:48:47

各位老师好想写个软件使电脑自动播放ppt 幻灯片无限循环播放。现在自动播放已经实现但是无法自动循环。求教如何修改

public void PPTAuto(string filePath, int playTime) //输入要播放的ppt文件和播放间隔时间

        {  

            //防止连续打开多个PPT程序.

            if (this.objApp != null)

            { return; }

            objApp = new POWERPOINT.Application();

            objPresSet = objApp.Presentations.Open(filePath, OFFICECORE.MsoTriState.msoCTrue, OFFICECORE.MsoTriState.msoFalse, OFFICECORE.MsoTriState.msoFalse); 

            // 自动播放的代码（开始）      

            int Slides = objPresSet.Slides.Count;

            int[] SlideIdx = new int[Slides];

            for (int i = 0; i < Slides; i++) 

            { SlideIdx[i] = i + 1; }; 

            objSldRng = objPresSet.Slides.Range(SlideIdx);

            objSST = objSldRng.SlideShowTransition;      

            //设置翻页的时间.

            objSST.AdvanceOnTime = OFFICECORE.MsoTriState.msoCTrue;

            objSST.AdvanceTime = playTime;     

            //翻页时的特效! 

            objSST.EntryEffect = POWERPOINT.PpEntryEffect.ppEffectCircleOut;

            //Prevent Office Assistant from displaying alert messages:      

            bAssistantOn = objApp.Assistant.On;

            objApp.Assistant.On = false;     

            //Run the Slide show from slides 1 thru 3.

            objSSS = objPresSet.SlideShowSettings;

            objSSS.StartingSlide = 1; 

            objSSS.EndingSlide = Slides;

            objSSS.Run(); 

            //Wait for the slide show to end.

            objSSWs = objApp.SlideShowWindows;

            while (objSSWs.Count >= 1) System.Threading.Thread.Sleep(playTime * 100);

            this.objPresSet.Close(); 

            this.objApp.Quit();  

        }