Manage Text Portions in Presentations in .NET

Get Position Coordinates of Portion

GetCoordinates() method has been added to IPortion and Portion class which allows retrieving the coordinates of the beginning of the portion:

using (Presentation presentation = new Presentation("Shapes.pptx"))
{
    IAutoShape shape = (IAutoShape)presentation.Slides[0].Shapes[0];
    var textFrame = (ITextFrame)shape.TextFrame;

    foreach (var paragraph in textFrame.Paragraphs)
    {
        foreach (Portion portion in paragraph.Portions)
        {
            PointF point = portion.GetCoordinates();
            Console.Write(Environment.NewLine + "Corrdinates X =" + point.X + " Corrdinates Y =" + point.Y);
        }
    }
}

FAQ

Can I apply a hyperlink to only part of the text within a single paragraph?

Yes, you can assign a hyperlink to an individual portion; only that fragment will be clickable, not the entire paragraph.

How does style inheritance work: what does a Portion override, and what is taken from Paragraph/TextFrame?

Portion-level properties have the highest precedence. If a property is not set on the Portion, the engine takes it from the Paragraph; if it is not set there either, from the TextFrame or the theme style.

What happens if the font specified for a Portion is missing on the target machine/server?

Font substitution rules apply. The text may reflow: metrics, hyphenation, and width can change, which matters for precise positioning.

Can I set a Portion-specific text fill transparency or gradient independent of the rest of the paragraph?

Yes, text color, fill, and transparency at the Portion level can differ from neighboring fragments.