GetGenerationNumber

Inside Macintosh: OpenDoc Class Reference /: Part 1 - Classes and Methods / ODStorageUnitView

GetGenerationNumber
The GetGenerationNumber method returns the generation number of the focused value.
ODULong GetGenerationNumber ();
return value
The generation number of the focused value, expressed as an unsigned 32-bit value.

DISCUSSION
You can use the generation number of a value to tell whether the data in the value has changed. For example, your part could compare the number returned by this method with a saved generation number.

EXCEPTIONS

kODErrUnfocusedStorageUnit
The focus context of this storage-unit view is not a value.
If the storage-unit cursor for this storage-unit view does not represent a legal focus context for the storage unit that created this storage-unit view, this method throws exceptions raised by the FocusWithCursor method of that storage unit.

SEE ALSO
The ODStorageUnitView::IncrementGenerationNumber method (page 748).