DAExtractPageTextA
Extraction, Direct access functionality, Page manipulation
Description
The trailing A denotes the ANSI (char) DLL entry point; the ActiveX/COM surface exposes only the Unicode form. Behaviour is identical to DAExtractPageText and string arguments are interpreted using the current SetAnsiMode code page
This function provides two different methods for extracting text from the selected page, and presents the results in a variety of formats.
The DASetTextExtractionWordGap, DASetTextExtractionOptions and
DASetTextExtractionArea functions can be used to adjust the text extraction process.
Syntax
Delphi
Function DLDAExtractPageTextA(InstanceID, FileHandle, PageRef, Options: Integer): PAnsiChar;DLL
const char * DLDAExtractPageTextA(int InstanceID, int FileHandle, int PageRef, int Options);Parameters
| FileHandle | A handle returned by the DAOpenFile, DAOpenFileReadOnly or DAOpenFromStream functions |
|---|---|
| PageRef | A page reference returned by the DAFindPage or DANewPage functions |
| Options | Using the standard text extraction algorithm: 0 = Extract text in human readable format 1 = Deprecated 2 = Return a CSV string including font, color, size and position of each piece of text on the page Using the more accurate but slower text extraction algorithm: 3 = Return a CSV string for each piece of text on the page with the following format: Font Name, Text Color, Text Size, X1, Y1, X2, Y2, X3, Y3, X4, Y4, Text The co-ordinates are the four points bounding the text, measured using the units set with the SetMeasurementUnits function and the origin set with the SetOrigin function. Co-ordinate order is anti-clockwise with the bottom left corner first. 4 = Similar to option 3, but individual words are returned, making searching for words easier 5 = Similar to option 3 but character widths are output after each block of text 6 = Similar to option 4 but character widths are output after each line of text 7 = Extract text in human readable format with improved accuracy compared to option 0 8 = Similar output format as option 0 but using the more accurate algorithm. Returns unformatted lines. |