I think Bob is right though, it is a case of inspecting the source code since at some point it is windows native code that is executing. So you don't know if it is strictly synchronous or asynchronous in a single threaded app? Sometimes it seems like maybe some code goes in as a Postmessage(?) while the (single) thread continues to run so that things aren't executed in a 100% linear manner.
Dave
Rob Kennedy <[EMAIL PROTECTED]> wrote:
David Smith wrote:
> I would like to know how I can make sure the code will wait for
> something to process before executing the next line of code or NOT
> wait. I know I'm getting this with Sendmessage or PostMessage but not
> sure with Delphi events. So I guess my question is, Is a Delphi event
> synchronous (waits until first line finishes before going to next
> line) or asynchronous (executes next line even if first line isn't
> finished).
A Delphi event is nothing more than a method pointer. When the
circumstances corresponding to an event occur, the component inspects
its event property. If the property is non-nil, the component invokes
the event handler. That simply calls the method. It's just like calling
any other method. Control is transfered from the caller to that method,
and code in the caller does not run until the method returns.
--
Rob
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