The Visio developer help has the info I've pasted below, if you haven't
found it: I haven't tried to extract the info yet, and I don't know if the
info below gives enough information for you to rebuild the objects.
--
Hope this helps,
Chris Roth
Visio MVP
--------------------------------------------------------------
ForeignData Element
Contains a MIME (Multipurpose Internet Mail Extensions) encoded BLOB of
picture data, such as Windows metafile, bitmap, or OLE data.
Syntax
<ForeignData
ForeignType
[ObjectType]
[ShowAsIcon]
[ObjectWidth]
[ObjectHeight]
[MappingMode]
[ExtentX]
[ExtentY]
[CompressionType]
[CompressionLevel]>
</ForeignData>Attributes
ForeignType
Required enumeration.
Value Description
4
Object
16
Metafile
32
Bitmap
ObjectType
Optional int. If the ForeignType attribute is "Object", the ForeignData
element must also have an ObjectType attribute. The ObjectType attribute is
an integer value that may be a sum of the following values.
Value Description
256
Linked object
512
Embedded object
1024
Control
16384
OLE2 Named
32768
OLE2 object
ShowAsIcon
Optional Boolean. This attribute is only meaningful if the foreign data is
an OLE2 embedded object.
Value Description
0
Do not show embedded data as an icon.
1
Show embedded data as an icon.
ObjectWidth
Optional float. This attribute is only meaningful if the foreign data is an
OLE2 embedded object. The value expresses the width of the object in page
units.
ObjectHeight
Optional float. This attribute is only meaningful if the foreign data is an
OLE2 embedded object. The value expresses the height of the object in page
units.
MappingMode
Optional int. This attribute is only meaningful if the foreign data is a
metafile. The value indicates the metafile mapping mode.
ExtentX
Optional float. This attribute is only meaningful if the foreign data is a
metafile. The value indicates the horizontal extent of the metafile.
ExtentY
Optional float. This attribute is only meaningful if the foreign data is a
metafile. The value indicates the vertical extent of the metafile.
CompressionType
Optional string. This attribute is only meaningful if the foreign data is a
raster-based foreign object, such as a DIB, JPG, PNG, TIFF, or GIF file. The
value indicates the type of compression applied to the file.
Value Description
0
No compression (the default)
1
JPEG compression
2
GIF compression
3
TIFF compression
4
PNG compression
CompressionLevel
Optional float. This attribute is only meaningful if the foreign data is a
raster-based foreign object, such as a DIB, JPG, PNG, TIFF, or GIF file. The
value indicates the level of compression applied to the file. Compression
level is measured in hundreths of a percent.
Element properties
Property Value
Name ForeignData
Minimum Occurrences 0
Maximum Occurrences 1
Element information
Parent elements
PageSheet
Shape
StyleSheet
DocumentSheet
Child elements
None
See also
ForeignData property
ForeignType property
--------------------------------------------------------------
lucoosa said:
I am trying to intrepret the OLE data that is stored in a ForeignData tag
in
terms of pulling out the metafile and the native OLE data. Does anyone
have
information on the MIME BLOB that is stored in an XML vdx file for OLE
embedded data in the ForeignData tag?