RAD Studio VCL Reference
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Variant::IsNull Method
Variant Class | Variant Members | System Namespace | Description | See Also
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Queries the VType of the base class TVarData for the varNull bit.

Pascal
function IsNull: bool;
C++
__fastcall bool IsNull() const;
Description

System::Variant::IsNull returns true if the System::Variant::Variant type code is varNull, false otherwise. 

 

See Also
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