pdfDeleteBookmark

int32_t __stdcall pdfDeleteBookmark(PPDF IPDF, uint32_t ABmk);
BOOL32 __stdcall pdfExchangeBookmarks(PPDF IPDF, int32_t Bmk1, int32_t Bmk2);

function pdfDeleteBookmark(const IPDF: PPDF; ABmk: Cardinal): Integer; stdcall;
function pdfExchangeBookmarks(const IPDF: PPDF; Bmk1, Bmk2: Integer): LongBool; stdcall;

Purpose. Remove a bookmark node (pdfDeleteBookmark), or swap the tree positions of two existing bookmarks (pdfExchangeBookmarks).

Return value. pdfDeleteBookmark: non-zero on success, 0 if ABmk doesn't resolve. pdfExchangeBookmarks: True if both Bmk1/Bmk2 resolve.

C# (P/Invoke)

public static extern int pdfDeleteBookmark(IntPtr IPDF, uint ABmk);