3D annotation Posters

[DeveloperGuy@adobeforums.com]

How do you set a poster on a 3D annotation? I've tried setting up a image Xobject but that did not work. The docs say that I have to use a formXobject but the only way to do this that I can find is to make a PDF with a picture in it and then load that. Is there some more straight forward way?

[Leonard_Rosenthol@adobeforums.com]

All Annotation Appearances (as documented in the PDF Reference) MUST be FormXObjects. A FormXObject is just a "mini PDF", so you can put in your image XObject and then "Do" it from the Form XObject.

[DeveloperGuy@adobeforums.com]

Well I got this working now. Why doesn't PDDocOpen() automatically convert an image file to a PDF when AVDocOpenFromFile() Does? That seems very counter intuitive... Is there some function that converts allowable files into PDFs?

[Leonard_Rosenthol@adobeforums.com]

Because PDDocOpen is a low level API for open up PDF files - as it is documented to do.

AVDocOpen, however, also supports a framework call the AVConversion framework, allowing for the conversion of other formats - as it is documented to do.

[DeveloperGuy@adobeforums.com]

Thanks for your help, I got the conversion working now.