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    VarTypeIsValidElementType

    Check if a variant type can be used in an array.

    Declaration

    Source position: variants.pp line 149

    function VarTypeIsValidElementType(const aVarType: tvartype) : Boolean;

    Arguments

    Name Description
    aVarType Type to test.

    Function result

    True if the variant type aVarType can be used in an array.

    Description

    VarTypeIsValidElementType checks if the variant type aVarType can be used as the type of a variant array, similar to VarTypeIsValidArrayType. It returns True if it is usable, False otherwise. Currently, the following types are valid: SmallInt, Integer, Single, Double, Date, Currency, OleStr, Dispatch, Error, Boolean, Variant, Unknown (interface IUnknown), ShortInt, Byte, Word, LongWord int64. In addition, if the variant type is an known custom variant type, True is also returned.

    Reference and array indicators are stripped before the test.

    See also

    Name Description
    VarIsArray Check whether a variant is an array.
    VarTypeIsValidArrayType Check if a variant type can be used in an array.