4.1.10.8 VarType

VarType function

Prototype:	function VarType(const Data :variant) :word;
Description:	Returns the type code of a specified Variant
Syntax:	variable:= VarType(Data);
	Part	Description
	variable	variable declared as a word
	Data	variable declared as variant
Return value:	type code of a specified Variant

Note: This function is available since version X7.

The following table describes the meaning of each of the variant types defined in the System unit:

Variant Type	Description
varEmpty	The variant is Unassigned.
varNull	The variant is Null.
varAny	Represents a Variant that can hold any value.
varSmallint	16-bit signed integer (type Smallint in Delphi, short in C++).
varInteger	32-bit signed integer (type Integer in Delphi, int in C++).
varSingle	Single-precision floating-point value (type Single in Delphi, float in C++).
varDouble	Double-precision floating-point value (type double).
varCurrency	Currency floating-point value (type Currency).
varDate	Date and time value (type TDateTime).
varOleStr	Reference to a dynamically allocated UNICODE string.
varDispatch	Reference to an Automation object (an IDispatch interface pointer).
varError	Operating system error code.
varBoolean	16-bit Boolean (type WordBool).
varVariant	Indicates another variant.
varUnknown	Reference to an unknown object (an IInterface or IUnknown interface pointer).
varShortInt	8-bit signed integer (type ShortInt in Delphi or signed char in C++).
varByte	A Byte.
varWord	Unsigned 16-bit value (Word).
varLongWord	Unsigned 32-bit value (type LongWord in Delphi or unsigned long in C++).
varInt64	64-bit signed integer (Int64 in Delphi or __int64 in C++).
varStrArg	COM-compatible string.
varString	Reference to a dynamically allocated string (not COM-compatible).
varArray	Indicates a Variant array.
varByRef	Indicates that the variant contains a reference as opposed to a value.
varTypeMask	Indicates the type of each array element.