A rendering plug-in's
IPrintOemUni::GetInfo method returns identification information.
Contains one of the following caller-supplied integer constants.
The method must write the bit flag value of OEMPUBLISH_IPRINTCOREHELPER to the buffer pBuffer if the IPrintOemUni::PublishDriverInterface method should be called with parameter pIUnknown pointing to an object that implements the IPrintCoreHelperUni Interface.
The method must return a unique four-byte identification signature. The plug-in must also place this signature in OPTITEM structures, as described in the description of the OEMCUIPPARAM. structure's pOEMOptItems member.
Caller-supplied pointer to memory allocated to receive the information specified by dwInfo.
Caller-supplied size of the buffer pointed to by pBuffer.
Caller-supplied pointer to a location to receive the number of bytes written into the buffer pointed to by pBuffer.
The method must return one of the following values.
The operation succeeded.
The operation failed.
A rendering plug-in for Unidrv must implement the
IPrintOemUni::GetInfo method, which is called immediately after the plug-in is loaded. The method should return the specified information by writing it to the address specified by pBuffer and writing the size, in bytes, of the returned information into the location specified by pcbNeeded.
If pBuffer is NULL, the method should just use pcbNeeded to return the number of bytes required to store the specified information.
For more information about creating and installing rendering plug-ins, see Customizing Microsoft's Printer Drivers.