How to get PDOCG from PDEElement?

Question

I am trying to get OCG from PDEElement using PDEElementGetOCMD and PDOCMDGetOCGs however, I am finding return value of PDEElementGetOCMD always NULL though all objects in PDF are layered.

Please help

Jaydeep

lrosenth · Answer

Are you seeing this for EVERY PDF that you try or just one?GetOCMD will only return a valid OCMD if there is one.  Perhaps the file you are looking at doesn’t use them and only uses simple OCGs.

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