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COM Interfaces for Rendering Plug-Ins

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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.

The following COM interfaces are defined for communication between Microsoft's printer drivers and rendering plug-ins:

IPrintOemUni COM Interface, which allows the printer graphics DLL for Unidrv to call rendering plug-ins.

IPrintOemUni2 COM Interface, which extends the capabilities of the IPrintOemUni COM interface.

IPrintOemUni3 COM Interface, which extends the capabilities of the IPrintOemUni and IPrintOemUni2 COM interfaces.

IPrintOemDriverUni COM Interface, which supplies utility operations to rendering plug-ins for Unidrv.

IPrintOemPS COM Interface, which allows the printer graphics DLL for Pscript5 to call rendering plug-ins.

IPrintOemPS2 COM Interface, which extends the capabilities of the IPrintOemPS COM interface.

IPrintOemDriverPS COM Interface, which supplies utility operations to rendering plug-ins for Pscript5.

IPrintCorePS2 COM Interface, which provides helper methods for Pscript5 minidriver render plug-ins.

The following figure shows the inheritance tree for the COM interfaces used in render plug-ins.

diagram illustrating the inheritance tree for the com interfaces used in render plug-ins.