DLI Implementation and Reference Guide - Datalogics

Working with Content 8.21
The typical scaling calculation using values returned by dlpdfimagegetsize
would be to divide the intended print size by the image size on each axis; e.g.
dlpdfcontentreferenceimage(Content, Image,
Int32ToFixed(72), Int32ToFixed(92), 0,
ASFixedDiv(xPoints, Int32ToFixed(xRasters)),
ASFixedDiv(yPoints, Int32ToFixed(yRasters)));
An image in which each pixel of each raster line represents one PDF unit of output
will return the same values for both image dimension (xRasters and yRasters)
and print size (xPoints and yPoints), and thus a Scale Factor of 1 on both axes.
dlpdfimagegetsize
The Scale Factors specified in dlpdfcontentreferenceimage will determine the
resulting size of the image. This method gives you the image information necessary to
calculate those values, dividing the intended print size by the file size for each
dimension. This yields a Scale Factor ratio which dlpdfcontentreferenceimage
uses to calculate the final output image size.
Associating Content to Page
The dlpdfcontenttopage call places the content onto a page. Once made, the
content is no longer accessible via the DLI Package, and the pointer to the content
structure is no longer valid.
dlpdfcontenttopage
This procedure will make the markings placed into content a part of the specified
page. Following this call, the content structure no longer exists: pointers to it are then
invalid and should no longer be used.