The IPDF interface is designed to configure output files to be saved in PDF format.
Properties
Enum ColorSpace
Defines the bit depth of the resulting image measured as the number of bits representing each pixel. It is both readable and writable.
Constant
Value
Description
CS_BLACKWHITE
1
Black and white image (1 bit per pixel)
CS_16COLORS
4
Color image, 16 colors (4 bits per pixel)
CS_16GRAYSCALE
132
Grayscale image (16 hues, 4 bits per pixel)
CS_256COLORS
8
Color image, 256 colors (8 bits per pixel)
CS_256GRAYSCALE
136
Grayscale image (256 hues, 8 bits per pixel)
CS_TRUECOLOR
24
True color image (24 bits per pixel)
Enum Compression
Defines the image compression algorithm to be applied when creating TIFF files. Please note that certain compression algorithms are only applicable to files with a certain bit depth. An exception will be generated if an attempt is made to set compression that is incompatible with current bit depth. It is both readable and writable.
Constant
Value
Description
CMP_DEFAULT
0xFFFFFFFF
Software automatically selects the best compression mode: CCITT Group4, if the ColorSpace property is set to CS_BLACKWHITE, and LZW otherwise
CMP_NONE
0
No compression
CMP_CCITTGR3
1
CCITT Group 3 compression (a lossless Huffman algorithm using a fixed table). Valid only if the ColorSpace property is set to CS_BLACKWHITE
CMP_CCITTGR4
2
CCITT Group 4 compression (a more advanced version of CCITT Group 3). Valid only if the ColorSpace property is set to CS_BLACKWHITE
CMP_FLATE
4
Flate compression (lossless compression using an algorithm similar to ZIP)
Enum Multipage
Helps manage the process of creating multi-page output files. It is both readable and writable.
Constant
Value
Description
MM_SINGLE
0
Each page of the source document and every one-page document are saved as separate files
MM_MULTI
2
Each multi-page source document is saved as a single multi-page file
MM_APPEND
3
The content of all documents processed is saved in a single multi-page file
String Password
Contains the password to be used to protect new PDF files. Valid only if the Standard property is set to STD_PROTECTED. It is both readable and writable.
Enum Standard
Defines the type of newly created PDF files. It is both readable and writable.
Constant
Value
Description
STD_REGULAR
0
Regular PDF file. No PDF/A and no password protection. You are able to edit this PDF in Adobe Acrobat Professional if you want.
STD_PDFA
1
Newly created PDF file corresponds to PDF/A standard. Password protection unsupported.
STD_PROTECTED
2
A password is required to open an output file. The password is set using the Password property.
Enum Smoothing
Defines the dithering mode applied to half-tone transitions and used to reduce stepwise rendering when representing downsampled images. Dithering is applied only if the ColorSpace property has one of the following values: CS_BLACKWHITE, CS_16COLORS, CS_16GRAYSCALE, CS_256COLORS. It is both readable and writable.
Constant
Value
Description
SM_HQ
1
High-quality dithering is enabled to optimize for output image quality
SM_FAST
0
Fast dithering is used to optimize for conversion speed
Examples
Visual Basic 6
Dim objUDC As IUDC
Dim itfPrinter As IUDCPrinter
Dim itfProfile As IProfile
Set objUDC = New UDC.APIWrapper
Set itfPrinter = objUDC.Printers("Universal Document Converter")
Set itfProfile = itfPrinter.Profile
' Set PDF as current output file format
itfProfile.FileFormat.ActualFormat = FMT_PDF
itfProfile.FileFormat.PDF.ColorSpace = CS_GRAYSCALE_256
itfProfile.FileFormat.PDF.Multipage = MM_MULTI
itfProfile.FileFormat.PDF.Compression = CMP_DEFAULT
itfProfile.FileFormat.PDF.Smoothing = SM_FAST
itfProfile.FileFormat.PDF.Permissions = PER_OPENING
itfProfile.FileFormat.PDF.Password = "1234567"
