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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| -
| Header File
| ddeml.h
| Unicode
| No
| Platform Notes
| None
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XTYP_ADVSTART
XTYP_ADVSTART
A dynamic data exchange (DDE) server callback function receives the
XTYP_ADVSTART transaction when a client specifies XTYP_ADVSTART as the uType parameter of the DdeClientTransaction function. A client uses this transaction to establish an advise loop with a
server.
Parameters
uFmt
Specifies the data format requested by the client.
hconv
Identifies the conversation.
hsz1
Identifies the topic name.
hsz2
Identifies the item name.
hdata
Not used.
dwData1
Not used.
dwData2
Not used.
Return Values
A server callback function should return TRUE to allow an advise loop on the
specified topic name and item name pair, or FALSE to deny the advise loop. If
the callback function returns TRUE, any subsequent calls to the DdePostAdvise function by the server on the same topic name and item name pair causes the
system to send XTYP_ADVREQ transactions to the server.
Remarks
If a client requests an advise loop on a topic name, item name, and data
format for an advise loop that is already established, the Dynamic Data Exchange
Management Library (DDEML) does not create a duplicate advise loop but instead
alters the advise loop flags (XTYPF_ACKREQ and XTYPF_NODATA) to match the latest
request.
This transaction is filtered if the server application specified the
CBF_FAIL_ADVISES flag in the DdeInitialize function.
See Also
DdeClientTransaction, DdeInitialize, DdePostAdvise
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