VARENUM Enumeration

https://docs.microsoft.com/zh-cn/windows/desktop/api/wtypes/ne-wtypes-varenum

VARENUM Enumeration

• 2018/12/05
• 2 分钟阅读时长

Specifies the variant types.

Syntax

C++复制

typedef enum VARENUM {
  VT_EMPTY,
  VT_NULL,
  VT_I2,
  VT_I4,
  VT_R4,
  VT_R8,
  VT_CY,
  VT_DATE,
  VT_BSTR,
  VT_DISPATCH,
  VT_ERROR,
  VT_BOOL,
  VT_VARIANT,
  VT_UNKNOWN,
  VT_DECIMAL,
  VT_I1,
  VT_UI1,
  VT_UI2,
  VT_UI4,
  VT_I8,
  VT_UI8,
  VT_INT,
  VT_UINT,
  VT_VOID,
  VT_HRESULT,
  VT_PTR,
  VT_SAFEARRAY,
  VT_CARRAY,
  VT_USERDEFINED,
  VT_LPSTR,
  VT_LPWSTR,
  VT_RECORD,
  VT_INT_PTR,
  VT_UINT_PTR,
  VT_FILETIME,
  VT_BLOB,
  VT_STREAM,
  VT_STORAGE,
  VT_STREAMED_OBJECT,
  VT_STORED_OBJECT,
  VT_BLOB_OBJECT,
  VT_CF,
  VT_CLSID,
  VT_VERSIONED_STREAM,
  VT_BSTR_BLOB,
  VT_VECTOR,
  VT_ARRAY,
  VT_BYREF,
  VT_RESERVED,
  VT_ILLEGAL,
  VT_ILLEGALMASKED,
  VT_TYPEMASK
} ;

Constants

VT_EMPTY	Not specified.
VT_NULL	Null.
VT_I2	A 2-byte integer.
VT_I4	A 4-byte integer.
VT_R4	A 4-byte real.
VT_R8	An 8-byte real.
VT_CY	Currency.
VT_DATE	A date.
VT_BSTR	A string.
VT_DISPATCH	An IDispatch pointer.
VT_ERROR	An SCODE value.
VT_BOOL	A Boolean value. True is -1 and false is 0.
VT_VARIANT	A variant pointer.
VT_UNKNOWN	An IUnknown pointer.
VT_DECIMAL	A 16-byte fixed-pointer value.
VT_I1	A character.
VT_UI1	An unsigned character.
VT_UI2	An unsigned short.
VT_UI4	An unsigned long.
VT_I8	A 64-bit integer.
VT_UI8	A 64-bit unsigned integer.
VT_INT	An integer.
VT_UINT	An unsigned integer.
VT_VOID	A C-style void.
VT_HRESULT	An HRESULT value.
VT_PTR	A pointer type.
VT_SAFEARRAY	A safe array. Use VT_ARRAY in VARIANT.
VT_CARRAY	A C-style array.
VT_USERDEFINED	A user-defined type.
VT_LPSTR	A null-terminated string.
VT_LPWSTR	A wide null-terminated string.
VT_RECORD	A user-defined type.
VT_INT_PTR	A signed machine register size width.
VT_UINT_PTR	An unsigned machine register size width.
VT_FILETIME	A FILETIME value.
VT_BLOB	Length-prefixed bytes.
VT_STREAM	The name of the stream follows.
VT_STORAGE	The name of the storage follows.
VT_STREAMED_OBJECT	The stream contains an object.
VT_STORED_OBJECT	The storage contains an object.
VT_BLOB_OBJECT	The blob contains an object.
VT_CF	A clipboard format.
VT_CLSID	A class ID.
VT_VERSIONED_STREAM	A stream with a GUID version.
VT_BSTR_BLOB	Reserved.
VT_VECTOR	A simple counted array.
VT_ARRAY	A SAFEARRAY pointer.
VT_BYREF	A void pointer for local use.
VT_RESERVED
VT_ILLEGAL
VT_ILLEGALMASKED
VT_TYPEMASK