Variant.VariantType Enum

Definition

Namespace:

Microsoft.VisualStudio.Package

Assembly:

Microsoft.VisualStudio.Package.LanguageService.15.0.dll

Specifies the type of a variant object as used by a managed package framework (MPF) language service class.

public: enum class Variant::VariantType

enum Variant::VariantType

public enum Variant.VariantType

type Variant.VariantType = 

Public Enum Variant.VariantType

Inheritance

Enum

Variant.VariantType

Fields

Name	Value	Description
VT_EMPTY	0	An empty variant.
VT_NULL	1	A null value.
VT_I2	2	A 2 byte (16-bit) signed integer.
VT_I4	3	A 4 byte (32-bit) signed integer.
VT_R4	4	A 4 byte real number, also known as a float.
VT_R8	5	An 8 byte real number, also known as a double.
VT_CY	6	A Currency value (fixed decimal point value stored in 64-bits).
VT_DATE	7	A DATE object.
VT_BSTR	8	A string.
VT_DISPATCH	9	An object that implements the IDispatch interface.
VT_ERROR	10	An error code (typically returned from a Win32 function).
VT_BOOL	11	A value representing true (-1) or false (0).
VT_VARIANT	12	A reference to a variant object.
VT_UNKNOWN	13	An object implementing the IUnknown interface.
VT_DECIMAL	14	A decimal number stored as a string.
VT_I1	16	A 1 byte (8-bit) signed integer.
VT_UI1	17	A 1 byte (8-bit) unsigned integer.
VT_UI2	18	A 2 byte (16-bit) unsigned integer.
VT_UI4	19	A 4 byte (32-bit) unsigned integer.
VT_I8	20	An 8 byte (64-bit) signed integer.
VT_UI8	21	An 8 byte (64-bit) unsigned integer.
VT_INT	22	A generic integer (typically a 32-bit value).
VT_UINT	23	A generic unsigned integer (typically 32-bits).
VT_VOID	24	A C-style void type.
VT_HRESULT	25	An HRESULT or COM return value.
VT_PTR	26	A generic pointer.
VT_SAFEARRAY	27	An array that is guaranteed to be at least empty (that is, it is never a null value).
VT_CARRAY	28	A C-style array (an array of pointers).
VT_USERDEFINED	29	A user-defined blob.
VT_LPSTR	30	A pointer to a null-terminated ANSI string.
VT_LPWSTR	31	A pointer to a null-terminated wide character (Unicode) string.
VT_FILETIME	64	A FILETIME value.
VT_BLOB	65	An arbitrary block of memory.
VT_STREAM	66	A stream of bytes.
VT_STORAGE	67	Name of the storage.
VT_STREAMED_OBJECT	68	A stream that contains an object.
VT_STORED_OBJECT	69	A storage object.
VT_BLOB_OBJECT	70	An arbitrary block of memory representing an object.
VT_CF	71	A value specifying a clipboard format.
VT_CLSID	72	A GUID for a class (a CLSID).
VT_ILLEGALMASKED	4095	A bit mask to isolate valid variant types.
VT_TYPEMASK	4095	A bit mask to isolate valid variant types.
VT_VECTOR	4096	An array with a leading count value.
VT_ARRAY	8192	An array of variants.
VT_BYREF	16384	A reference to an object.
VT_RESERVED	32768	Reserved for future use.
VT_ILLEGAL	65535	Represents an illegal variant type.

Remarks

The values here correspond to a standard variant type but these are used specifically with the Variant structure in an MPF language service. The language service is interested in only one variant type, VT_UI2, which is a 2 byte unsigned integer representing a Unicode character.