Replaces the specific type of font used in the final document.


#include "ltocr.h"

L_LTOCR_API L_INT EXT_FUNCTION L_OcrDocumentManager_SetFontName(documentManager, language, documentFontType, value)


L_OcrDocumentManager documentManager

Handle to the OCR engine document manager.

L_OcrLanguage language

language ID

L_OcrDocumentFontType documentFontType

The type of font to replace.

const L_TCHAR* value

The font name that will be used in final document.


Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.


Use L_OcrDocumentManager_GetFontName and L_OcrDocumentManager_SetFontName to get/set the fonts used in the final recognized document (PDF, DOC, HTML, etc). The fonts will not be used when the final document format is text.

The OCR engine uses six different fonts when creating the final output document. For more information, refer to L_OcrDocumentFontType.

The L_OcrCharacter.FontStyles member of each character returned in L_OcrPage_GetRecognizedCharacters determines which font to use with the character. If the zone is MICR (the L_OcrZone.ZoneType member is L_OcrZoneType.MICR) then the character will use the MICR fonts accordingly.

The OCR engine keeps a list of fonts for some languages, for example all the Latin languages currently use the same font. So passing language equals to L_OcrLanguage_EN for English or L_OcrLanguage_DE for German will change the default Latin fonts used in the final document.

If the OCR engine has Asian languages enabled, then each language will have its own font sets and you can get/set these fonts individually. Currently, the LEADTOOLS OCR toolkits supports individual fonts for Latin, Japanese, Korean and Chinese (zh-Hans and zh-Hant). The following table lists the default fonts used for each language:

Languages and Fonts

Latin (all other languages) including language equals to L_OcrLanguage_None.

Font Value
Proportional Serif Times New Roman
Proportional Sans-Serif Arial
Monospace Serif Courier New
Monospace Sans-Serif Courier New
ICR Bookman Old Style
MICR Arial Unicode MS

Japanese (language equals to L_OcrLanguage_JA)

Font Value
Proportional Serif MS PMincho
Proportional Sans-Serif MS PGothic
Monospace Serif MS Gothic
Monospace Sans-Serif SimSun
ICR MS Gothic

Chinese (language equals to L_OcrLanguage_ZH_HANS or L_OcrLanguage_ZH_HANT)

Font Value
Proportional Serif SimSun
Proportional Sans-Serif SimHei
Monospace Serif Hei Simplified
Monospace Sans-Serif SimSun
ICR Hei Simplified

Korean (language equals to L_OcrLanguage_KO)

Font Value
Proportional Serif Gungsuh
Proportional Sans-Serif Gulim
Monospace Serif Dotum
Monospace Sans-Serif Gungsuh
ICR Dotum
MICR Gungsuh

Note that changing the fonts is not recommended in most cases, the character position and size is calculated based on the default fonts even if the user changes the fonts before the recognition process. After the changing the fonts, it might be required to use L_OcrPage_GetRecognizedCharacters and L_OcrPage_SetRecognizedCharacters to further change the character position and font size to create the final output document.

Required DLLs and Libraries

See Also




For an example, refer to L_OcrDocumentManager_GetFontName

Help Version 23.0.2024.2.29
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.


Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.