com.sun.jna.platform.win32

Interface DdemlUtil.RequestHandler

Enclosing class:

DdemlUtil

public static interface DdemlUtil.RequestHandler

Method Summary

Modifier and Type	Method and Description
Ddeml.HDDEDATA	onRequest(int transactionType, int dataFormat, Ddeml.HCONV hconv, Ddeml.HSZ topic, Ddeml.HSZ item) A client uses the XTYP_REQUEST transaction to request data from a server.

Method Detail

onRequest

Ddeml.HDDEDATA onRequest(int transactionType,
                         int dataFormat,
                         Ddeml.HCONV hconv,
                         Ddeml.HSZ topic,
                         Ddeml.HSZ item)

A client uses the XTYP_REQUEST transaction to request data from a server. A Dynamic Data Exchange (DDE) server callback function, DdeCallback, receives this transaction when a client specifies XTYP_REQUEST in the DdeClientTransaction function.

Parameters:

transactionType - uType - The transaction type.

dataFormat - uFmt - The format in which the data should be submitted to the client.

hconv - A handle to the conversation.

topic - hsz1 - A handle to the topic name.

item - hsz2 - A handle to the item name.

Returns:

Data for the changed item or NULL if transaction can't be completed. If the server returns NULL, the client will receive a DDE_FNOTPROCESSED flag.