2.2.3.2.7 Server Print Caps Request (PRINT_CAPS_REQ)
The PRINT_CAPS_REQ request message is used to request client printer capabilities. Each printer exposes certain capabilities such as duplex printing, stapling, or color support. These capabilities are redirected by using this message and the corresponding PRINT_CAPS_RSP response message. The data contained in this message is opaque to the Remote Desktop Protocol: XPS Print Virtual Channel Extension.
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Header (variable): The common message header (as specified in section 2.2.1). The InterfaceId field MUST be set to 0x00000000. The FunctionId field MUST be set to PRINT_CAPS_REQ (0x00000105). This message contains no payload.