c# - 如何更改从 PowerPoint 的 c# 加载项显示的当前幻灯片

Question

我正在尝试使用 c# 插件来控制 PowerPoint 当前幻灯片(从红外 Remote 双向滑动)，但我卡在了 power point 插件的编程部分

就这么简单，我有一个无限循环等待后台线程上的串行命令(完成这部分)，但我卡在如何更改当前显示的幻灯片上

我正在使用 Office 加载项 -> Power Point 2013 加载项

Answer 1

如何更改当前显示的幻灯片？

Microsoft.Office.Interop.PowerPoint.Application objPPT;
Microsoft.Office.Interop.PowerPoint.Presentations objPresentations;
Microsoft.Office.Interop.PowerPoint.Presentation objCurrentPresentation;
Microsoft.Office.Interop.PowerPoint.SlideShowView objSlideShowView;

private void StartPowerPointPresentation(object sender, EventArgs e)
{
    // Open an instance of PowerPoint and make it visible to the user
    objPPT = new Microsoft.Office.Interop.PowerPoint.Application();
    objPPT.Visible = Microsoft.Office.Core.MsoTriState.msoTrue;

    //Open a presentation
    OpenFileDialog openDlg = new OpenFileDialog();
    openDlg.Filter = "Powerpoint|*.ppt;*.pptx|All files|*.*";
    if (opendlg.ShowDialog() == true)
    {
        //Open the presentation
        objPresentations = objPPT.Presentations;
        objCurrentPresentation = objPresentations.Open(openDlg.FileName, MsoTriState.msoFalse, MsoTriState.msoTrue, MsoTriState.msoTrue);
        //Hide the Presenter View
        objCurrentPresentation.SlideShowSettings.ShowPresenterView = MsoTriState.msoFalse;
        //Run the presentation
        objCurrentPresentation.SlideShowSettings.Run();
        //Hold a reference to the SlideShowWindow
        objSlideShowView = objCurrentPresentation.SlideShowWindow.View;
    }
}

private void ShowNextSlide(object sender, EventArgs e)
{
    //Unless running on a timer you have to activate the SlideShowWindow before showing the next slide
    objSlideShowView.Application.SlideShowWindows[1].Activate();
    //Go to next slide
    objSlideShowView.Next();
}

这在 AddIn 中应该很容易实现，您可能需要在 StartUp 事件中连接一些事件，然后按照此示例了解如何使用对象模型来显示下一张幻灯片。