Initializing help system before first use

# XpressProblem.CallbackAPI.SlpDrColCallback Delegate

slpdrcol callback
Namespace: Optimizer.Objects
Assembly: xprsdn (in xprsdn.dll) Version: 47.01.01+0ba4e76731516b80760698bbaa939494dae84e49
Syntax
C#

    public delegate int SlpDrColCallback(
    	XpressProblem cbprob,
    	int col,
    	int detcol,
    	double detval,
    	out double p_value,
    	double lb,
    	double ub
    )

#### Parameters

cbprob XpressProblem
  The problem passed to the callback function.
col Int32
  The index of the column for which the determining columns is checked.
detcol Int32
  The index of the determining column for the column that is being updated.
detval Double
  The value of the determining column in the current SLP iteration.
p_value Double
  Used to return the new value for column col, should it need to be updated, in which case the callback must return a positive result to indicate that this value should be used.
lb Double
  The original lower bound of column col. The callback provides this value as a reference, should the bound be updated or changed during the solution process.
ub Double
  The original upper bound of column col. The callback provides this value as a reference, should the bound be updated or changed during the solution process.

#### Return Value

Int32
Remarks
More details about the slpdrcol callbacks can be found in the documentation of the corresponding C callback.
See Also

#### Reference

Optimizer.Objects Namespace

#### Other Resources

C documentation of XPRSaddcbslpdrcol()
Parent Topic Optimizer.Objects

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