How to get watermarks from ppt document?

Aspose.Total Product Family
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Hello,
We need to add active and hidden watermarks in my project and verify if they are exist, how should I verify if the watermarks are exist on ppt document please? We have found we can use doc.Watermark.Type to judge if we have watermarks on the word document, so do we have any similar functions to judge ppt document? Or do we have any simple ways to judge please?
Hope for your reply.

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@DeanLX Yes, you can check whether MS Word has a watermark using Watermark class. Regarding PPT MS PowerPoint documents you should consult with Aspose.Slides team. I will move your request into Aspose.Total form. My colleagues from Aspose.Slides will get back to you soon.

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@DeanLX,
In PowerPoint documents, watermarks are usually normal text or images that are locked to manual removal or modification. There is no special shape for watermarks. You can try using the Name or AlternativeText properties from the IShape interface to mark and identify watermarks.

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@andrey.potapov It seems working well, thanks Andrey!

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@DeanLX,
Thank you for using Aspose products.