Sends data between client and server applications in a dynamic data exchange (DDE) conversation.

DDEPoke(nChannelNumber, cItemName, cDataSent
   [, cDataFormat [, cUDFName]])

Parameters

nChannelNumber

Specifies the channel number of the application data is sent to. If the channel number is a server channel, DDEPoke( ) sends the data in response to a request or a previously established notify or automatic link.

cItemName

Specifies the item name to which data is sent. The item name is application-specific and must be understood by the application. For example, Microsoft Excel supports R1C1 as a valid item name that refers to the first cell in a worksheet.

cDataSent

Specifies the data sent to the item name specified with cItemName.

cDataFormat

Specifies the format used to send the data. The default format is CF_TEXT. In this format, fields are delimited with tabs and records are delimited with a carriage return and a linefeed.

cUDFName

Allows asynchronous data transfer. If cUDFName is omitted, a client waits for the period specified with DDESetOption( ). If you specify the name of a user-defined function with cUDFName, client program execution continues immediately after the request is made.

When the data is available from the server application, the user-defined function specified with cUDFName is executed. The user-defined function is passed six parameters in this order:

Parameter	Contents
Channel Number	The channel number of the server application.
Action	XACTCOMPLETE (successful transaction).XACTFAIL (failed transaction).
Item	The item name; for example, R1C1 for a Microsoft Excel worksheet cell.
Data	The new data (REQUEST) or data passed (POKE or EXECUTED).
Format	The data format; for example, CF_TEXT.
Transaction Number	The transaction number returned by DDEPoke( ).

Use DDEAbortTrans( ) to cancel an uncompleted transaction. If the transaction fails, you can use DDELastError( ) to determine why it failed.

When you include cUDFName, DDEPoke( ) returns a transaction number if successful or –1 if an error occurs.

Return Value

Remarks

See Also