Hi,Support:
How to do I reach my those requirements as below using Spire.Presentation.dll based on VB.net and Net 4.6.1 and Win10:
1. Open a PPT or PPTX file
2. Get the count of the Slides in the presentation
3. Get the Width and height of the slide
4. Add a textbox at (x,y) with given width and height
5. Set the boarders of then new added textbox to none, and set the background of new added textbox to none or transparent
6. extract all the text in each slide
7. Add text into the new added textbox, and set the fontname, fontsize,fontstyle,fontcolor for the texts in the new added textbox
8. Modify the character space to squeeze the characters in the new added textbox
9. Clone the textbox and move the cloned textbox to a new position
Thanks for your help.