Package com.sun.jna.platform.win32

Interface DdemlUtil.ExecuteHandler

Enclosing class:

DdemlUtil

public static interface DdemlUtil.ExecuteHandler

Method Summary

Modifier and Type	Method	Description
int	onExecute(int transactionType, Ddeml.HCONV hconv, Ddeml.HSZ topic, Ddeml.HDDEDATA commandString)	A client uses the XTYP_EXECUTE transaction to send a command string to the server.

Method Detail

onExecute

int onExecute(int transactionType,
              Ddeml.HCONV hconv,
              Ddeml.HSZ topic,
              Ddeml.HDDEDATA commandString)

A client uses the XTYP_EXECUTE transaction to send a command string to the server. A Dynamic Data Exchange (DDE) server callback function, DdeCallback, receives this transaction when a client specifies XTYP_EXECUTE in the DdeClientTransaction function.

Remarks

This transaction is filtered if the server application specified the CBF_FAIL_EXECUTES flag in the DdeInitialize function.

Because most client applications expect a server application to perform an XTYP_EXECUTE transaction synchronously, a server should attempt to perform all processing of the XTYP_EXECUTE transaction either from within the DDE callback function or by returning the CBR_BLOCK return code. If the hdata parameter is a command that instructs the server to terminate, the server should do so after processing the XTYP_EXECUTE transaction.

Parameters:

transactionType - uType - The transaction type.

hconv - A handle to the conversation.

topic - hsz1 - A handle to the topic name.

commandString - A handle to the command string.

Returns:

A server callback function should return DDE_FACK if it processes this transaction, DDE_FBUSY if it is too busy to process this transaction, or DDE_FNOTPROCESSED if it rejects this transaction.