c# 怎么捕获 PPT的开始放映和结束放映

[shijihongwei]

做了一个倒计时的小软件，用于PPT倒计时。

如何捕获ppt的播放，然后倒计时开始；
ppt退出播放后，倒计时结束。

怎么捕获它的事件：ShowSlideBegin 和 ShowSlideEnd

看了一下
https://support.microsoft.com/zh-tw/help/308825/how-to-handle-powerpoint-events-with-visual-c-.net

也没弄懂。

到底如何来捕获呢？

[vlevle]

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using PowerPoint = Microsoft.Office.Interop.PowerPoint; namespace PPTEventTest { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private PowerPoint.Application oPPT; private void button1_Click(object sender, EventArgs e) { oPPT = new PowerPoint.Application(); oPPT.Visible = Microsoft.Office.Core.MsoTriState.msoTrue; oPPT.Activate(); oPPT.SlideShowBegin += new PowerPoint.EApplication_SlideShowBeginEventHandler(SlideShowBegin); oPPT.SlideShowEnd += new PowerPoint.EApplication_SlideShowEndEventHandler(SlideShowEnd); } private void SlideShowEnd(PowerPoint.Presentation Pres) { this.listBox1.Items.Add("结束放映"); } private void SlideShowBegin(PowerPoint.SlideShowWindow Wn) { this.listBox1.Items.Add("开始放映"); } private void Form1_Load(object sender, EventArgs e) { System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false; } private void button2_Click(object sender, EventArgs e) { oPPT.SlideShowBegin -= SlideShowBegin; oPPT.SlideShowEnd -= SlideShowEnd; oPPT.ActivePresentation.Saved = Microsoft.Office.Core.MsoTriState.msoTrue; oPPT.ActivePresentation.Close(); oPPT.Quit(); oPPT = null; //GC.Collect(); } } }

[神仙颠倒]

引用 1 楼 vlevle 的回复:

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using PowerPoint = Microsoft.Office.Interop.PowerPoint; namespace PPTEventTest { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private PowerPoint.Application oPPT; private void button1_Click(object sender, EventArgs e) { oPPT = new PowerPoint.Application(); oPPT.Visible = Microsoft.Office.Core.MsoTriState.msoTrue; oPPT.Activate(); oPPT.SlideShowBegin += new PowerPoint.EApplication_SlideShowBeginEventHandler(SlideShowBegin); oPPT.SlideShowEnd += new PowerPoint.EApplication_SlideShowEndEventHandler(SlideShowEnd); } private void SlideShowEnd(PowerPoint.Presentation Pres) { this.listBox1.Items.Add("结束放映"); } private void SlideShowBegin(PowerPoint.SlideShowWindow Wn) { this.listBox1.Items.Add("开始放映"); } private void Form1_Load(object sender, EventArgs e) { System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false; } private void button2_Click(object sender, EventArgs e) { oPPT.SlideShowBegin -= SlideShowBegin; oPPT.SlideShowEnd -= SlideShowEnd; oPPT.ActivePresentation.Saved = Microsoft.Office.Core.MsoTriState.msoTrue; oPPT.ActivePresentation.Close(); oPPT.Quit(); oPPT = null; //GC.Collect(); } } }

多谢！ PowerPoint = Microsoft.Office.Interop.PowerPoint; 改成了PPt = Microsoft.Office.Interop.PowerPoint;后面的也都替换成了PPt 我把 按钮1 点击事件里面的代码放在了 Form1_Load中，去掉了 oPPT.Visible = Microsoft.Office.Core.MsoTriState.msoTrue; oPPT.Activate(); 不想一运行就出来ppt 按钮2 里的代码也用不到。 我运行此程序，然后手动打开ppt，一开始播放ppt的话，就想着能倒计时。 但是，我的倒计时代码z_time.Start();放在private void SlideShowBegin(PPt.SlideShowWindow Wn) {}里面，就是不倒计时啊。这是为什么呢？

[神仙颠倒]

ppt获得播放状态后，就是不能倒计时啊？ 是不是timer和ppt有关的东西，有冲突呢？ 还有其他的方法能获取到ppt的播放和结束吗？

[vlevle]

加了一个计时器w1，获取放映总时间，定时器t1进行计数，后者的触发次数放在TimeCount中。 private PowerPoint.Application oPPT; private int TimeCount; //t1定时器触发次数 private System.Timers.Timer t1 = new System.Timers.Timer(1000); //t1定时器,定时间隔1000ms private Stopwatch w1 = new Stopwatch(); //w1计时器 private void button1_Click(object sender, EventArgs e) { oPPT = new PowerPoint.Application(); oPPT.Visible = Microsoft.Office.Core.MsoTriState.msoTrue; oPPT.Activate(); oPPT.SlideShowBegin += new PowerPoint.EApplication_SlideShowBeginEventHandler(SlideShowBegin); oPPT.SlideShowEnd += new PowerPoint.EApplication_SlideShowEndEventHandler(SlideShowEnd); t1.Elapsed += new System.Timers.ElapsedEventHandler(TimerElapsed1); } private void TimerElapsed1(object sender, System.Timers.ElapsedEventArgs e) { TimeCount++; //listBox1.Items.Add("t1已触发次数：" + TimeCount); } private void SlideShowEnd(PowerPoint.Presentation Pres) { this.listBox1.Items.Add("结束放映"); t1.Stop(); w1.Stop(); listBox1.Items.Add("t1触发次数："+TimeCount ); listBox1.Items.Add("w1计时："+ w1.Elapsed ); listBox1.Items.Add("t1和w1停止"); w1.Reset(); //计时器归零 } private void SlideShowBegin(PowerPoint.SlideShowWindow Wn) { this.listBox1.Items.Add("开始放映"); TimeCount = 0; t1.AutoReset = true; t1.Start(); w1.Start(); listBox1.Items.Add("t1和w1启动"); }

[神仙颠倒]

顶一下，看看有知道的吗？ 有这方面的资料，可以学习，看看的也行。 希望有大神来给个提示。

[TRY889]

对于WPS的幻灯片似乎无效！