----- Original Message -----
From: "Dennis Jenkins" <[EMAIL PROTECTED]>
To: <sqlite-users@sqlite.org>
Sent: Thursday, September 15, 2005 12:54 PM
Subject: Re: [sqlite] tracing memroy leak
Unless I'm wrong (he he... tha can happen):
PostMessage simply inserts the "MSG" into the target thread's message
queue. The target thread's message pump needs to consume that message and
dispatch it. Remember, message queues are owned by threads, not windows.
PostMessage is asynchronous.
SendMessage actually dispatches the message to the target window handler,
but inside the CALLERs thread context. SendMessage blocks until the call
is completed. The target message handler must be reentrant for this to
work.
It is not processed in the caller's thread context, it is processed in the
context of the thread that created the window. If you call SendMessage() to
a window in another thread, the first thread will block until the window's
thread processes the message and returns. Same behavior across process
boundaries. Messages below WM_USER are marshaled to the other process's
memory space before being queued up. Anything with a messageid above
WM_USER you have to marshal across process yourself.
Robert
