Enumerates all the PDEElements in a given stream. It is similar to PDEContentCreateFromCosObj(), but provides enumeration instead of a list of elements.
If marked content is not ignored, each PDEContainer contains a PDEContent list within itself.
void PDEEnumElements(IN const CosObj *contents, IN const CosObj *resources, IN ASUns32 flags, IN PDEElementEnumProc enumProc, IN void *enumProcClientData); contents | IN/OUT A Cos object that is the source for the content stream. It may be page contents, a Form XObject, a Type 3 font CharProc, or an appearance object from an annotation.
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resources | IN/OUT The object's Resources dictionary. If the Form or Type 3 font or appearance dictionary contains a Resources dictionary, this dictionary must be passed in
resources. Otherwise, it must be the page resources object of the page containing the Form or Type 3 font contents object. |
flags | IN/OUT Flags from PDEEnumElementsFlags.
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enumProc | IN/OUT A user-supplied callback to call once for each top-level element. Note that the element in
enumProc may only be valid for this method. Use PDEAcquire() if you need to hold on to the element longer than the scope of enumProc. |
enumProcClientData | IN/OUT A pointer to user-supplied data to pass to
enumProc each time it is called. |