DARenderPageToString
Direct access functionality, Rendering and printing
Description
It renders the specified page from the specified document to an image and returns the image data as a string
By default rendering uses the GDI+ system which is available in Windows XP and later
Option 10, TIFF (G4) output, is only available on Windows Vista and Windows Server 2008 and later
It is also possible to render using Cairo, use the SetCairoFileName and SelectRenderer
functions
Syntax
Delphi
Function TPDFlib.DARenderPageToString(FileHandle, PageRef, Options: Integer; DPI: Double): AnsiString;DLL
const char * DLDARenderPageToString(int InstanceID, int FileHandle, int PageRef, int Options, double DPI);Parameters
| FileHandle | A handle returned by the DAOpenFile, DAOpenFileReadOnly or DAOpenFromStream functions |
|---|---|
| PageRef | A page reference returned by the DAFindPage or DANewPage functions |
| Options | 0 = BMP output 1 = JPEG output 2 = WMF output 3 = EMF output 4 = EPS output 5 = PNG output 6 = GIF output 7 = TIFF output 8 = EMF+ output 9 = HTML5 output 10 = G4 TIFF output |
| DPI | The DPI to use when rendering the page. Values over 300 will cause excessive memory usage |