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SOLUTIONS
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MATHEMATICA MATHLINK C FUNCTION
MLGetMessageHandler()
MLMessageHandlerObject MLGetMessageHandler(MLINK link)
returns the message handler function installed for the MLINK object link.
DetailsDetails
- The urgent message handler function is called when MathLink receives an urgent message from the other end of the connection.
- MLGetMessageHandler() returns (MLMessageHandlerObject)0 if link does not have an installed message handler function.
- MLMessageHandlerObject is a pointer to a function of the form void f(MLINK link, int m1, int m2).
- MLGetMessageHandler() is declared in the MathLink header file mathlink.h.
ExamplesExamplesopen allclose all
Basic Examples (1)Basic Examples (1)
#include "mathlink.h"
/* a function to read MathLink urgent messages */
void AppMessageHandler(MLINK link, int m1, int m2)
{
/* ... */
}
/* check that a link uses AppMessageHandler for urgent messages */
void check_the_message_handler(MLINK link)
{
MLMessageHandlerObject handler;
handler = MLGetMessageHandler(link);
if(handler != (MLMessageHandlerObject)AppMessageHandler)
{
if(! MLSetMessageHandler(link, (MLMessageHandlerObject)AppMessageHandler))
{ /* unable to set AppMessageHandler as the handler for
link */ }
}
}
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