Package com.sun.jna.platform.win32

Schnittstelle DdemlUtil.RequestHandler

Umschließende Klasse:

DdemlUtil

public static interface DdemlUtil.RequestHandler

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
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.

Methodendetails

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.

Parameter:

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.

Gibt zurück:

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.