Hi Ed,

>Is there a way for VFP to recognize user-defined message types (types defined using RegisterWindowMessage()) so that you could simply use SendMessage() and PostMessage() to request services from VFP withouyt establishing a COM server or DDE server?

Nope. VFP handles the message queue on its own.

>VFP wouldn't be able to respond within the scope of the line of code executing the function, though, since VFP only responds to messages between lines of p-code.

In fact, to many messages it only responds when it's on the READ EVENT command or when switching between procedures.

Christof