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    TFPExprVariableCallBack

    Callback procedure type for variable evaluation

    Declaration

    Source position: fpexprpars.pp line 494

    type
  TFPExprVariableCallBack = procedure(var Result: TFPExpressionResult; 
                                    constref AName: ShortString);

    Arguments

    Name Description
    Result The result of the variable callback
    AName The name of the variable being evaluated

    Description

    This procedural type defines the signature for callback procedures that provide variable values during expression evaluation. It allows external code to resolve variable names to their corresponding values at runtime.