2.3.3.1.2 VtThumbnailValue
Referenced by: VtThumbnail
Specifies data for the thumbnail property. This type conforms to the ClipboardData type as specified in [MS-OLEPS] section 2.11, but this section specifies additional detail applicable to this type.
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cftag |
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formatId (optional) |
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cfDataBytes (variable) |
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padding (variable) |
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cb (4 bytes): An unsigned integer that specifies the count of bytes of the remainder of the structure, not including any padding field bytes.
cftag (4 bytes): An unsigned integer specifying the clipboard format of the data. MUST be 0x00000000, CF_WINDOWS (0xFFFFFFFF), or CF_MACINTOSH (0xFFFFFFFE). A value of 0x00000000 specifies that there is no image data associated with the property.
formatId (4 bytes): An unsigned integer specifying the format of the data stored in the cfDataBytes field. MUST NOT exist if the cftag field is 0x00000000. MUST exist if cftag is not 0x00000000. If it exists, it MUST be one of the following: CF_METAFILEPICT (0x00000003), CF_ENHMETAFILE (0x0000000E), or CF_JPEG (0x00000333).
cfDataBytes (variable): An array of bytes containing the data for the thumbnail image. MUST NOT exist if the cftag field is 0x00000000. MUST exist if cftag is not 0x00000000. If it exists, MUST be (cb - 8) bytes in length. The format of the data is specified by formatId according to the following table.
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formatId Value
Data format
CF_METAFILEPICT (0x00000003)
A METAFILEPICT structure as specified by [MS-WMF].
CF_ENHMETAFILE (0x0000000E)
Enhanced metafile image data as specified in [MS-EMF].
CF_JPEG (0x00000333)
Joint Photographic Experts Group (JPEG) image data.
padding (variable): An array of bytes. The length of the array MUST be the smallest number of bytes required to pad the size of this structure to a multiple of 4 bytes. The padding SHOULD be 0x00 values, but MAY be undefined values, and MUST be ignored.