Invoked in:
Server
Message from Partner:
WM_DDE_EXECUTE
Remarks:
This event is invoked in a server when a client requests that one or more commands be executed. The server is expected to retrieve the data using DDEGetStringData, and execute the commands contained therein.
DDEGetStringData must be called before calling DDEAck.
Required Response:
Upon receipt of a request that one or more commands be executed, the DDE protocol requires that the server respond as follows. The server must respond to this event before attempting to transmit another event to the partner.
Acknowledgment |
Subroutine Called |
Message |
Positive (Command was executed) |
DDEAck with DDE_FACK status flag set |
WM_DDE_ACK with DDE_FACK status bit set |
Negative (Command cannot be executed) |
DDEAck with DDE_FACK status flag not set |
WM_DDE_ACK with DDE_FACK status bit cleared |
Default Processing:
The DDE DLL default processing is to send a negative acknowledgment if the ESL program does not send an acknowledgment.
Available Queries:
Example:
response to stimulus DDE DDE_EXECUTE
copy eventparam to ConvID_IV
copy DDEGetStringData (ConvID_IV) to
Command_SV
if (ExecuteCommand (ItemName_SV)) then
copy " " to Format_SV
copy DDESetStatusFlag (0, DDE_FACK) to Status_IV
call DDEAck (ConvID_IV, ItemName_SV, Format_SV, Status_IV)
copy DDEGetStringData (ConvID_IV) to StringData_SV
else
copy 0 to Status_IV
call DDEAck (ConvID_IV, ItemName_SV, Format_SV, Status_IV)
end if
