COM Interfaces for UI Plug-Ins

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 UI plug-ins:

• IPrintOemCommon COM interface, which provides methods to specify and get device information.

• IPrintOemUI COM interface, which enables the printer interface DLL for Unidrv or Pscript5 to call UI plug-ins.

• IPrintOemUI2 COM interface, which extends the IPrintOemUI COM interface.

• IPrintOemUIMXDC COM interface, which enables UI plug-ins to control the conversion from GDI calls to XPS output in filter pipeline drivers.

• IPrintOemDriverUI COM interface, which supplies utility operations to UI plug-ins.

• IPrintCoreUI2 COM interface, which provides helper methods for minidriver UI plug-ins.

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