Gets a single byte from the data buffer associated with (and owned by) the message object specified in the message argument. The value of the index argument indicates which byte in the byte array is to be returned.
The requested byte is returned. If an error occurred, the returnCode parameter indicates the reason for the error.
Related concepts
User-defined Input nodes
User-defined message processing nodes
User-defined output nodes
Related tasks
Creating an input node in C
Creating a message processing node in C
Related reference
C language node utility functions
cniBufferPointer
cniBufferSize
cniSetInputBuffer
cniWriteBuffer
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