VarSub Function

Returns the result from subtracting two variants.

HRESULT VarSub(  
  LPVARIANT  pvarLeft,         
  LPVARIANT  pvarRight,  
  LPVARIANT  pvarResult
);
pvarLeft

[in] Points to the first variant.

pvarRight

[in] Points to the second variant.

pvarResult

[out] Points to the result variant.

The function returns one of the following:

If

Then

Both expressions are of the string type

Subtraction.

One expression is a string type and the other a character

Subtraction.

One expression is numeric and the other is a string

Subtraction.

Both expressions are numeric

Subtraction.

Either expression is NULL

NULL is returned.

Both expressions are empty

Empty string is returned.

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