PDFSaveUseDPI example for Visual Basic
Dim IO As New LEADRasterIO
'Use image DPI when saving as PDF
IO.PDFSaveUseDPI = True
'Save image as Raster PDF with CCITT G4 compression
IO.Save LEADRasterView1.Raster, "c:\temp\tmp.pdf", _
FILE_RAS_PDF_G4, 1, 1, SAVE_OVERWRITE