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SOLUTIONS
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LIBRARY LINK 符号
processMathLink
calls Mathematica to process the expression written onto a link.
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- Used in C/C++ code in a library function called from Mathematica.
- Typically, the expression written on the link will contain EvaluatePacket; the result will be a ReturnPacket.
- A nonzero error code value will be returned if there is an error.
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基本范例 (1)基本范例 (1)
The following gets a MathLink connection and uses it to send a message to the kernel:
int err;
MLINK link = libData->getMathLink(libData);
MLPutFunction( link, "EvaluatePacket", 1);
MLPutFunction( link, "Message", 2);
MLPutFunction( link, "MessageName", 2);
MLPutSymbol( link, "MyFunction");
MLPutString( link, "info");
MLPutString( link, "Message called from within DLL function.");
err = libData->processMathLink( link);
if (err) return err;
pkt = MLNextPacket( link);
if ( pkt == RETURNPKT) {
MLNewPacket(link);
}
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