Purpose
Set a user callback to be called when an SLP problem is about to be destroyed
Synopsis
int XPRS_CC XSLPsetcbdestroy(XSLPprob Prob,
int (XPRS_CC *UserFunc) (XSLPprob myProb, void *myObject),
void *Object);
Arguments
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Prob
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The current SLP problem.
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UserFunc
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The function to be called when the SLP problem is about to be destroyed.
UserFunc returns an integer value. At present the return value is
ignored.
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myProb
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The problem passed to the callback function.
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myObject
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The user-defined object passed as Object to
XSLPsetcbdestroy.
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Object
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Address of a user-defined object, which can be used for any purpose
by the function. Object is passed to UserFunc as myObject.
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Example
The following example sets up a callback to be executed before the SLP
problem is destroyed:
double *cSol;
XSLPsetcbdestroy(Prob, CBDestroy, &cSol);
The following sample callback function frees the memory associated with
the user-defined object:
int XPRS_CC CBDestroy(XSLPprob MyProb, void *Obj) {
if (*(void**)Obj) free(*(void**)Obj);
return 0;
}The Object argument is used here to hold the address of the array cSol
which we assume was assigned using one of the malloc functions.
Further information
This callback can be used when the problem is about to be destroyed
to free any user-defined resources which were allocated during the life of the problem.
When used with VB, the callback function has the prototype:
Public Function mycbfunc (ByVal prob As Long, ByVal object As Long) As Long
Related topics
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