SimpleHostMsg Class

10/16/2008

This class represents a message with a one-byte payload, which is the error code. It is sent from the host device to the MSN Direct receiver.

Syntax

class SimpleHostMsg : public Msg

Methods

Method	Description
SimpleHostMsg Constructor	Initializes the fields of this class by calling the Init method.
SimpleHostMsg::GetApplicationType	Returns the MSN Direct service type of this simple host message.
SimpleHostMsg::GetBuffer	Returns a pointer to the first byte of this simple host message after the beginning-of-frame.
SimpleHostMsg::GetBufferWithFrames	Returns a pointer to the first byte of this simple host message, including the bytes used for framing.
SimpleHostMsg::GetSize	Returns the size of this simple host message, subtracting the bytes used for framing.
SimpleHostMsg::GetSizeWithFrames	Returns the size of this simple host message by calling RawMessageSize.
SimpleHostMsg::GetTransactionId	Returns the transaction ID of this simple host message.
SimpleHostMsg::Init	Initializes the fields of this class.
SimpleHostMsg::IsResponse	Returns true if this simple host message is a response message.
SimpleHostMsg::RawMessageSize	Returns the size of this simple host message.
SimpleHostMsg::SetApplicationType	Sets the MSN Direct service type for this simple host message.
SimpleHostMsg::SetCRC	Computes the Cyclic Redundancy Check (CRC) value for this simple host message.
SimpleHostMsg::SetErrorCode	Sets the error code for this message.
SimpleHostMsg::SetFrame	Writes both the beginning-of-frame bytes and the end-of-frame bytes.
SimpleHostMsg::SetResponse	Sets the last bit of the transaction ID to indicate whether this simple host message is a response message.
SimpleHostMsg::SetTransactionId	Sets the transaction ID of this simple host message.

Remarks

This class inherits from Msg Class.

SimpleHostMsg provides a way to create a simple message that has a payload of one byte and that encodes an error code. For possible values, see MSN Direct Error Code Constants. This class can be used to request data from the MSN Direct receiver, or to send back an acknowledgement and error message from the host device to the receiver.

Requirements

Header	DBRLib.h
Library	DBRLib.lib
Windows Embedded CE	Windows CE 5.0, Windows Embedded NavReady 2009

See Also

Reference

DBR701::PrepareSimpleResponseMessage
MSN Direct Services Classes