PR_MAPPING_SIGNATURE 

The PR_MAPPING_SIGNATURE property contains the mapping signature for named properties of a particular MAPI object.

Quick Info

Remarks

It is recommended that objects having named properties expose the PR_MAPPING_SIGNATURE property. A client application should check the PR_MAPPING_SIGNATURE property of both objects when copying named properties from one object to another. Use of this property can minimize translating between copied properties  names and identifiers.

If PR_MAPPING_SIGNATURE does not exist for a given MAPI object, then the object has its own unique mapping of names and identifiers. In this case the client must call the IMAPIProp::GetNamesFromIDsTH9ACB method on the source object and then the IMAPIProp::GetIDsFromNamesCCP4ZE method on the destination object.

When two objects have the same PR_MAPPING_SIGNATURE value, the client does not need to translate name to identifier and identifier to name. The client can simply call the IMAPIProp::GetPropsK06IXU method on the source and then the IMAPIProp::SetPropsXCFLAC method on the destination. This is convenient for clients that perform custom copying of named properties, and for providers implementing the IMAPIProp::CopyTo1_YJNNR and IMAPIProp::CopyPropsJ9YC90 methods.

For more information on named properties and mapping of names and identifiers, see Named PropertiesVDUZP5.

See Also

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