Java Doc for Variant.java in  » Collaboration » poi-3.0.2-beta2 » org » apache » poi » hpsf » Java Source Code / Java DocumentationJava Source Code and Java Documentation

The Variant types as defined by Microsoft's COM. I found this information in http://www.marin.clara.net/COM/variant_type_definitions.htm.

In the variant types descriptions the following shortcuts are used: [V] - may appear in a VARIANT, [T] - may appear in a TYPEDESC, [P] - may appear in an OLE property set, [S] - may appear in a Safe Array.

[V] SAFEARRAY*.

[P] Blob contains an object.

[V][T][P][S] OLE Automation string.

[V] void* for local use.

[T] C style array.

[P] Clipboard format.

[V][T][P][S] currency.

[V][T][P][S] date.

[V][T][P][S] IDispatch *.

[V][P] Nothing, i.e.

[V][T][S] SCODE.

[P] FILETIME.

[T] Standard return type.

[T] pointer type.

[P] Storage contains an object.

[P] Stream contains an object.

[V][T][S] IUnknown *.

[T] user defined type.

[V][T][P][S] VARIANT *.

[P] simple counted array.

Returns a variant type's length.

Denotes a variant type with a length of 0 bytes.

Denotes a variant type with a length of 2 bytes.

Denotes a variant type with a length of 4 bytes.

Denotes a variant type with a length of 8 bytes.

Denotes a variant type with a length that is unknown to HPSF yet.

Denotes a variant type with a variable length.

[V] SAFEARRAY*. How long is this? How is it to be interpreted?

[P] Length prefixed bytes.

[P] Blob contains an object. How long is this? How is it to be interpreted?

[V][T][P][S] True=-1, False=0.

[V][T][P][S] OLE Automation string. How long is this? How is it to be interpreted?

[V] void* for local use. How long is this? How is it to be interpreted?

[T] C style array. How long is this? How is it to be interpreted?

[P] Clipboard format. How long is this? How is it to be interpreted?

[P] A Class ID.

It consists of a 32 bit unsigned integer indicating the size of the structure, a 32 bit signed integer indicating (Clipboard Format Tag) indicating the type of data that it contains, and then a byte array containing the data.

The valid Clipboard Format Tags are:

• Thumbnail.CFTAG_WINDOWS
• Thumbnail.CFTAG_MACINTOSH
• Thumbnail.CFTAG_NODATA
• Thumbnail.CFTAG_FMTID

typedef struct tagCLIPDATA {
 // cbSize is the size of the buffer pointed to
 // by pClipData, plus sizeof(ulClipFmt)
 ULONG              cbSize;
 long               ulClipFmt;
 BYTE*              pClipData;
 } CLIPDATA;

See msdn.microsoft.com/library/en-us/com/stgrstrc_0uwk.asp.

[V][T][P][S] currency. How long is this? How is it to be interpreted?

[V][T][P][S] date. How long is this? How is it to be interpreted?

[V][T][S] 16 byte fixed point.

[V][T][P][S] IDispatch *. How long is this? How is it to be interpreted?

[V][P] Nothing, i.e. not a single byte of data.

[V][T][S] SCODE. How long is this? How is it to be interpreted?

[P] FILETIME. The FILETIME structure holds a date and time associated with a file. The structure identifies a 64-bit integer specifying the number of 100-nanosecond intervals which have passed since January 1, 1601. This 64-bit value is split into the two dwords stored in the structure.

[T] Standard return type. How long is this? How is it to be interpreted?

[T] signed char.

[V][T][P][S] 2 byte signed int.

[V][T][P][S] 4 byte signed int.

[T][P] signed 64-bit int.

FIXME (3): Document this!

FIXME (3): Document this!

[T] signed machine int.

[T][P] null terminated string.

[T][P] wide (Unicode) null terminated string.

[V][P] SQL style Null.

[T] pointer type. How long is this? How is it to be interpreted?

[V][T][P][S] 4 byte real.

[V][T][P][S] 8 byte real.

FIXME (3): Document this!

[T] (use VT_ARRAY in VARIANT).

[P] Name of the storage follows.

[P] Storage contains an object. How long is this? How is it to be interpreted?

[P] Name of the stream follows.

[P] Stream contains an object. How long is this? How is it to be interpreted?

FIXME (3): Document this!

[V][T][P][S] unsigned char.

[T][P] unsigned short.

[T][P] unsigned int.

[T][P] unsigned 64-bit int.

[T] unsigned machine int.

[V][T][S] IUnknown *. How long is this? How is it to be interpreted?

[T] user defined type. How long is this? How is it to be interpreted?

[V][T][P][S] VARIANT *. How long is this? How is it to be interpreted?

[P] simple counted array. How long is this? How is it to be interpreted?

[T] C style void.

Returns a variant type's length.

Returns the variant type name associated with a variant type number.