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# problem.addMiplogCallback

Purpose
Declares a MIP log callback function, called each time the MIP log is printed. This callback function will be called in addition to any callbacks already added by problem.addMiplogCallback.
Topic areas
Callback, Logging
Synopsis
`problem.addMiplogCallback(miplog, data=None, priority=0)`
`miplog(cbprob, cbdata)`
Arguments

miplog | The callback function, which takes arguments cbprob and cbdata, and has an integer return value. This function is called whenever the MIP log is printed as determined by the MIPLOG control.
data: Any | A user-defined data to be passed to the callback function, miplog.
priority: int | An integer that determines the order in which multiple MIP log callbacks will be invoked. The callback added with a higher priority will be called before a callback with a lower priority. Set to 0 if not required.
cbprob: problem | The problem passed to the callback function, miplog.
cbdata: Any | The user-defined data passed as data when setting up the callback.

Related controls
Integer

MIPLOG | MIP print flag.

Further information
If the callback function returns a nonzero value, the tree search will be interrupted.
Related topics
problem.removeMiplogCallback, problem.addBarlogCallback, problem.addLplogCallback, problem.addMessageCallback.
Parent Topic Xpress problem object methods

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