>OK,
>uVar=DDEexecute(nChannel,[xmit] + KEYBOARD '{ALT+C}')

From VFP Help

------------
cCommand
Specifies the command you want to send to the other application. The format of the command is determined by the application you are sending it to. Consult the application's documentation for the correct syntax.
------------

I don't think you can pass a VFP command to the application...