Using EnumFeatures
Important
We recommend that you use Microsoft's IPP inbox class driver, along with Print Support Apps (PSA), to customize the print experience in Windows 10 and 11 for printer device development.
For more information, see the Print support app design guide.
A caller can use EnumFeatures to retrieve a keyword list that contains currently supported driver features and all PPD features, in addition to the following, which Pscript treats as if they were features defined within PPD *OpenUI/*CloseUI structure keywords:
*LeadingEdge
*UseHWMargins
Pscript handles certain features in a special way. If more than one of *Resolution, *SetResolution, and *JCLResolution keyword appear in a PPD, they're merged into one standard feature. After merging, the feature's keyword name will be "JCLResolution" if *JCLResolution appears first; otherwise it will be "Resolution".
Some driver features (such as %Mirroring) are always supported, while other driver features are supported only under certain conditions. For example, when spooler EMF spooling is disabled on Windows 2000 and later operating system releases, the %PageOrder feature won't be supported. These unsupported driver features won't appear in the output keyword list of EnumFeatures.
For driver features, the keyword prefix "%" is included in the output. For PPD features, the keyword prefix "*" isn't included in the output.