Insert content control or simple text in PowerPoint at current cursor selection c#

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C#3.5

interop

AddIn

Hi legends,
I am currently working for Word and PowerPoint Add-ins in c#. In Word file I used Interop to insert content control at current cursor position, but for PowerPoint file there is no option to insert content control from OOTB and also programatically as per my research of two days.

Is there any alternative to accomplish inserting content control or text in PowerPoint at current cursor position?

For Word file I have used this below code snippet

private void AddRichTextControlAtSelection(string contentControlName)
    {
        try
        {
            Microsoft.Office.Interop.Word.Document currentDocument = Globals.ThisAddIn.Application.ActiveDocument;                
            currentDocument.ActiveWindow.Selection.Select();

            Microsoft.Office.Tools.Word.Document extendedDocument = Globals.Factory.GetVstoObject(currentDocument);

            richTextControl1 = extendedDocument.Controls.AddRichTextContentControl("rtc_" + Guid.NewGuid().ToString());
            richTextControl1.PlaceholderText = contentControlName;
            richTextControl1.Title = contentControlName;
            richTextControl1.Tag = contentControlName;
        }
        catch (Exception ex)
        { }
    }