| ▼NOmniPageCSDK | |
| ▼NRecPDF | |
| CAlreadyInitializedException | RecPDF already initialized |
| CDocument | A PDF document |
| CManager | Manager class for the RecPDF |
| COperation | A PDF operation |
| COptDocument | A PDF document for PDF optimizing operations |
| CParameterIsNullException | Null parameter |
| CPDFException | PDF exception |
| CRecAPIError | RecAPI error |
| CRecPDF | Main class for RecPDF |
| C_COMPRESSED_IMG_INFO | Basic physical information of a compressed image buffer |
| C_FoundText | Search result |
| C_IMG_INFO | Structure of an image containing basic physical information |
| C_OUTPUTCONVERTERINFO | Output document converter information (ANSI) |
| C_R_IOStreamfuncs | Container structure of the IOStream callback functions |
| C_RPPERRORS | Error list item |
| C_ZONE | ZONE structure |
| CBAR_INFO | Barcode information |
| CCELL_INFO | Structure of a cell in a table |
| CCLASSIFY_INFO | Structure for information about classification |
| CCOMB_CELL_INFO | Structure of a comb-cell in a comb |
| CCUT_INFO | Structure for book images |
| CHNR_BOXDATA | Character box of HNR |
| CKRECMODULEINFO | Module info |
| CLANGUAGE_INFO | Language info |
| CLETTER | The LETTER structure |
| CLSPC | Additional information about the space character |
| COUTPUTCONVERTERINFOW | Output document converter information (Unicode) |
| CPREPROC_INFO | Information about preprocessing |
| CPROGRESSMONITOR | Progress information |
| CRLINE | Structure of a line |
| CSEnumTypeElement | Descriptor structure of an enum type element |
| CSTATISTIC | Recognition statistics |
| CZONEDATA | ZONEDATA structure |