RAD Studio VCL Reference
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VarUtils.VarSub Variable

VarSub is a function type variable that specifies the function making the subtraction operation between two variants.

Pascal
VarSub: function(const Left, Right: TVarData; var AResult: TVarData): HRESULT;
C++
function(const Left, Right: TVarData; var AResult: TVarData): HRESULT VarSub;

Use VarSub to specify the function that makes the subtraction operation between two variants given through the Left and Right parameters. The result is stored in the AResult parameter.  

The function specified through VarNot returns a value of type HRESULT. For a list of possible return values, see the VAR_ constants in the VarUtils unit. 

 

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