Feature entry format

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.

To specify a printer feature entry in a GPD file, use the following format:

*Feature: FeatureName {FeatureAttributes}

where FeatureName is the name of either one of the predefined standard features or a customized feature name, and FeatureAttributes is a set of feature attributes.

For example, a GPD file might contain the following specification of the standard InputBin feature.

*Feature: InputBin
{
    *Name: "Paper Bin"
    *DefaultOption: Upper
    *Option: Upper
    {
        *Name: "Upper Tray"
        *Command: CmdSelect
        {
            *Order: DOC_SETUP.10
            *Cmd: "<1B>&l1H"
        }
        *Constraints: PaperSize.Env10
    }
    *Option: Manual
    {
        *Name: "Manual Feed"
        *Command: CmdSelect
        {
            *Order: DOC_SETUP.10
            *Cmd: "<1B>&l2H"
        }
        *Installable?: TRUE
    }
}

If you repeat a feature specification by, for example, including two or more InputBin feature entries, then the following rules apply:

• Attributes and options that are not duplicated are added to Unidrv's database.

• Attributes and options that are duplicated are overwritten, and Unidrv retains only the last specification.

You can control the order in which features are displayed to the user. See Specifying Feature and Option Display Order.