Some APIs are not support on Mac 64

Hi All

     I am changing an original App which base on mac 32 to mac64.

But I found some APIs in PDFL SDK  are not available on mac 64.

Such as,

PDPageGetPalette,

PDDrawCosObjWithParams,

PDPageDrawContentsWithParams.........

I do not know how to find the related APIs to replaced the 32-bit APIs.Is there some 'preferences' or 'guideline' or 'manual' to explain how to change.

Who can help me? Thanks a lot.