A DDE callback function receives this transaction type whenever a DDEML server application uses the DdeNameService function to register a service name, or whenever a non-DDEML application that supports the System topic is started.
wFmt
Not used.
hConv
Not used.
hsz1
Identifies the base service name being registered.
hsz2
Identifies the instance-specific service name being registered.
hData
Not used.
dwData1
Not used.
dwData2
Not used.
This transaction is filtered if the application specified the CBF_SKIP_REGISTRATIONS flag in the DdeInitialize function.
A application cannot block this transaction type; the CBR_BLOCK return code is ignored.
An application should use the hsz1 parameter to add the service name to the list of servers available to the user. An application should use the hsz2 parameter to identify which application instance has started.
DdeInitialize, DdeNameService