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Parameters with undefined data type

The Buffer parameter on the MQGET, MQPUT, and MQPUT1 functions has an undefined data type. This parameter is used to send and receive the application's message data.

Parameters of this sort are shown in the C examples as arrays of MQBYTE. We can declare the parameters in this way, but it is usually more convenient to declare them as the particular structure that describes the layout of the data in the message. Declare the actual function parameter as a pointer-to-void, and specify the address of any sort of data as the parameter on the function invocation.

 

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