3.3.5.2.2.3 Sending a Convert Dev Mode Request
The CONVERT_DEVMODE_REQ request message is sent from the server to the client when the printing subsystem requests from the printer driver a conversion from one version of a DEVMODE to another. The driver then performs the conversion based on the value of fMode field. The exact interface for converting the DEVMODE is between the server printing subsystem and the client print driver, which is specific to the printing subsystem implementation, outside of this protocol. The protocol treats these fields as opaque payload. The fields cbDevmodeIn and DevmodeIn MUST contain the DEVMODE information supplied by the printing subsystem. The cbProvided field MUST indicate the maximum number of bytes for the OutputBuffer field in the response.