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Feature Conflict Priority

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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 feature's conflict priority identifies the priority that a feature should have when Unidrv's user interface code enforces option constraints.

The GPD parser assigns a conflict priority to a feature in the following order, from highest to lowest priority:

  1. Installable features that are installed. (See Handling Installable Features and Options.)

  2. Features with *FeatureType set to PRINTER_PROPERTY.

  3. Features with *FeatureType set to DOC_PROPERTY or JOB_PROPERTY.

Features within each feature type are assigned a relative priority based on the value specified for the feature's *ConflictPriority attribute. Thus, for example, a PRINTER_PROPERTY feature with a *ConflictPriority attribute of 1 has a higher priority than a DOC_PROPERTY feature with a *ConflictPriority attribute of 3. Features that don't have a *ConflictPriority attribute have a lower priority than features that do.

For more information about the *FeatureType and *ConflictPriority attributes, see Feature Attributes.