Changes from Version 20 to Version 21

Version 21 of this C API has changed from version 20 as follows:

New Data Types

CANNYOPTIONS

COMPAREOPTIONS

EXOBJ_COLORINFO

EXOBJ_CONTENTBOUND

EXOBJ_CONTENTBOUND_OPTIONS

EXOBJ_DATA

EXOBJ_FILTER_OPTIONS

EXOBJ_OBJECT

EXOBJ_OBJECTLIST

EXOBJ_OPTIONS

EXOBJ_OUTLINE_POINT

EXOBJ_OUTLINE_POINTLIST

EXOBJ_REGION_OPTIONS

EXOBJ_RESULT

EXOBJ_SEGMENT

EXOBJ_SEGMENTLIST

FILTERTIMEOUTOPTIONS

FIND_CANDIDATE_FORM_FIELDS_OPTIONS

FIND_CANDIDATE_FORM_FIELDS_OUTPUTS

L_FILEATTACHMENT

L_FILEATTACHMENTS

OMRFIELD

OMRFIELDS

SAUVOLABINARIZE

TEXTFIELD

TEXTFIELDS

New Functionality

L_AnnCalibrateRuler2

L_CannyEdgeDetectorBitmap

L_CompareBitmap

L_DrawAddUserFontFromFile

L_DrawAddUserFontFromMemory

L_DrawClearUserFonts

L_ExtractAttachment

L_ExtractObjects_AddObject

L_ExtractObjects_CalcContentBound

L_ExtractObjects_CalcRegion

L_ExtractObjects_ClearInternalCache

L_ExtractObjects_FilterList

L_ExtractObjects_FreeData

L_ExtractObjects_MoveObject

L_ExtractObjects_RemoveObject

L_ExtractObjectsBitmap

L_FindCandidateFormFields

L_FindCandidateFormFieldsFree

L_FreeAttachments

L_FreeBuffer

L_GetFilterHeartbeatCallback

L_GetFilterTimeout

L_ReadFileAttachments

L_SauvolaBinarize

L_SetFilterHeartbeatCallback

L_SetFilterTimeout

L_SetlocaleW

Removed Functionality

L_BlankPageDetectorBitmapExt

L_FreeUnWarpBitmap

Changed Functionality

L_BlankPageDetectorBitmap - Removed 2 parameters.

Changed Data Types

DOCWRTALTOXMLOPTIONS - Takes 2 new members.

FILEINFO - Takes one new member.

LOADFILEOPTION - Takes one new member.

New Defines

Define Value Description
ANNCALIBRATE_EXISTING [0x0002] Calibrates the hObject Ruler, and calibrates all other rulers and polyrulers in the container to have a matching calibration.
ANNCALIBRATE_NEW [0x0004] Any new ruler and polyruler created through automation will have a matching calibration to hObject Ruler.
ANNCALIBRATE_THIS [0x0001] Calibrates the hObject Ruler to be dCalibrateLength and uCalibrateUnit. All existing and new rulers are unaffected.
DOCWRT_ALTOXML_PlainText [0x00000002] If set, the font information will be discarded and all the text will use the same font.
DOCWRT_ALTOXML_ShowGlyphInfo [0x00000004] If set, extra information is displayed for each glyph (position, bounding rectangle).
DOCWRT_ALTOXML_ShowGlyphVariants [0x00000008] If set, text from OCR will display variants for some glyphs.
DOCWRT_ALTOXML_Sort [0x00000001] If set, the text will be sorted.
ELO2_IGNORE_EMBEDDED_ICC_PROFILE [0x00000020] Ignore the ICC profile embedded in the file (if any) - useful mainly for loading TIFF/JPEG CMYK/LAB files.
ESO2_PDF_LINEARIZED [0x00080000] Linearize the PDF file after save.
EXOBJ_8_CONNECTIVITY [0x0001] Pass to enable 8-way connectivity (diagonals), otherwise 4-way (only NSEW).
EXOBJ_CHECK_CONTAINER_SUBCHILDREN [0x0080] (Requires _IGNORE_CONTAINERS) Check the number of children in a container by recursing to lower objects (not just immediate children).
EXOBJ_CHECK_FOR_TABLES [0x0100] (Requires _CHECK_CONTAINER_SUBCHILDREN) When filtering out a container, attempt to preserve the cell containers as children (refer to dTableMaxBorderPercent).
EXOBJ_CONTENTBOUND_OPTIMIZED_FOR_REPETITION [0x1] Cache certain calculations from this iteration for use in consecutive calls.
EXOBJ_DETECT_CHILDREN [0x0004] Detect the children for each object, and output as a tree of nested objects.
EXOBJ_DIRECTION_EAST [0] The next outline point is to the right
EXOBJ_DIRECTION_NORTH [1] The next outline point is above
EXOBJ_DIRECTION_SOUTH [3] The next outline point is below
EXOBJ_DIRECTION_WEST [2] The next outline point is to the left
EXOBJ_FILTER_INVERT_RANGE [0x2] Invert the range (min <= filtered out <= max [instead of: filtered out < min or max < filtered out]).
EXOBJ_FILTER_REPORT_REMOVED_OBJECTS [0x1] Return a new list containing the filtered out objects (refer to pRemoved).
EXOBJ_FLATTEN [0x0800] (Requires _DETECT_CHILDREN) Flatten the final lists to store the children of an object immediately after the parent, rather than in a tree structure. Note: Using _SORT_TOPLEFT is applied after the flattening and will remove the parent-child ordering.
EXOBJ_IGNORE_CONTAINERS [0x0040] (Requires _DETECT_CHILDREN) Ignore containers during extraction (refer to uContainerMinCount).
EXOBJ_IGNORE_LARGE_NOISE [0x0020] Ignore large noise during extraction (refer to nLargeNoiseThreshold).
EXOBJ_IGNORE_SMALL_NOISE [0x0010] Ignore small noise during extraction (refer to nSmallNoiseThreshold).
EXOBJ_LOCATION_AFTER [0] Add pObject to pTargetList after pObjectNeighbor.
EXOBJ_LOCATION_BEFORE [1] Add pObject to pTargetList before pObjectNeighbor.
EXOBJ_LOCATION_CHILD [2] Add pObject to the end of pObjectNeighbor->pChildren.
EXOBJ_LOCATION_SIBLING [3] Add pObject to the end of pObjectNeighbor->pSiblings.
EXOBJ_OUTLINE [0x0002] Extract pixels along each object's outline.
EXOBJ_REGION_HORIZONTAL [0x1] Extract the region as horizontal segments.
EXOBJ_REGION_VERTICAL [0x2] Extract the region as vertical segments.
EXOBJ_REPORT_IGNORED [0x0008] Return ignored noise/containers in their respective lists.
EXOBJ_SORT_TOPLEFT [0x0400] Sort the object lists in each EXOBJ_RESULT structure (sub-lists not sorted).
EXOBJ_USE_MULTICOLORS [0x0200] Extract objects for each specified color level (instead of just 1 BPP).
FILEINFO_GRAY8_ALPHA [0x00400000] This file contains 8-bit grayscale data + alpha.
FILEINFO_PALETTE8_ALPHA [0x00800000] This file contains 8-bit color palette data + alpha.
FILEINFO_PORTFOLIO [0x01000000] This file is portfolio (such as a PDF with collection schema).
MSE_DONTUSE_MULTITHREADING [0x0040] Do not use multi-threading (Use this with single-core CPUs).
PDF_ENHANCE_THIN_LINES [0x00000004] If set, enhance thin lines (this is the default). If not set, thin lines are not enhanced.
XLS_FLAGS_SHOWGRIDLINES [0x00000040] When set, the sheet's grid lines will be rendered.

For more information, refer to:

What's New in Version 21

Help Version 21.0.2021.4.7
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