ActivateAtStorage

Configures the client to instantiate objects on the same computer as the persistent state they are using or from which they are initialized.

Registry Entry

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
   {AppID_GUID}
      ActivateAtStorage = value

Remarks

This is a REG_SZ value. Any value that begins with 'Y' or 'y' indicates that ActivateAtStorage should be used.

The ActivateAtStorage capability provides a transparent way to allow clients to locate running objects on the same computer as the data that they use. This reduces network traffic because the object performs local file-system calls instead of calls across the network.

When a value is set for ActivateAtStorage, this becomes the default behavior in calls to the CoGetInstanceFromFile and CoGetInstanceFromIStorage functions, as well as to the file moniker implementation of IMoniker::BindToObject. In all of these calls, specifying a COSERVERINFO structure overrides the setting of ActivateAtStorage for the duration of the function call. The caller can pass COSERVERINFO information to IMoniker::BindToObject through the BIND_OPTS2 structure.

The value set for ActivateAtStorage is also the default behavior when CLSCTX_REMOTE_SERVER is specified if no registry information for the class is installed on the client's computer. Client applications written to take advantage of ActivateAtStorage may therefore require less administration.

Related topics

CLSCTX
CoGetInstanceFromFile
CoGetInstanceFromIStorage
COSERVERINFO
IMoniker::BindToObject
Registering COM Servers

 

 

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