What is the relationship between FSPDF_FORM and FSPDF_FORMCONTROL? What about FSPDF_FORMCONTROL and FSCRT_ANNOT?

One PDF Form (FSPDF_FORM) can contain more than one Form Field, and one Form Field can contain more than one Form Control (FSPDF_ FORMCONTROL).

Form Control (FSPDF_ FORMCONTROL) and Annotation (FSCRT_ANNOT) belong to the type of “annotation”. The difference is that FSPDF_ FORMCONTROL denotes the “widget” annotations, and FSCRT_ANNOT denotes other annotations which are not “widget”.

Note: This article refers to a deprecated version of a Foxit Product. If you are still using Foxit PDF SDK 5.3 or older, please refer to your download package documents for Developer Guide and API Reference.

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