RAD Studio VCL Reference
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Variants.VarIsEmptyParam Function
Variants | Description | See Also
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Indicates whether the specified variant represents an unassigned optional parameter.

Pascal
function VarIsEmptyParam(const V: Variant): Boolean;
C++
Boolean VarIsEmptyParam(const Variant V);
File
Description

VarIsEmptyParam returns true if the given variant represents an unassigned optional parameter. If the variant contains any other value, the function result is false. 

 

See Also
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