Francois PIETTE wrote:
>> In V6, how can I extract messages of the to be detached socket only?
>> Is it Peekmessage(Msg, OldHWnd, MsgLow, MsgLow + MsgCnt, PM_REMOVE)?
>
> No. This would retrieve all messages for all component sharing the
> same TIcsWndHandler.
> It is necessary to iterate thru FMsgMap to find all occurence of self
> and get the corresponding message numbers (see
> TIcsWndHandler.AllocateMsgHandler) to use in PeekMessage. It is not
> guaranteed that all messages numbers for a given component are
> contiguous altough it will most of the time.
>
> The problem is to retrieve all message from the old queue and post
> them in the new queue in the same order. This can be solved by
> examining the time member in TMsg record.
Can you please help me? Something like below, or do I still haven't
got it fully?
procedure TIcsWndControl.MoveQueuedMessages(NewHwnd: HWND);
var
I : UINT;
Idx : Integer;
Msg : tagMsg;
P : PMsg;
L : TList;
function CmpFunc(Item1: Pointer; Item2: Pointer): Integer;
begin
if PMsg(Item1)^.time = PMsg(Item2)^.time then
Result := 0
else if PMsg(Item1)^.time > PMsg(Item2)^.time then
Result := 1
else
Result := -1;
end;
begin
L := TList.Create;
try
I := 0;
while I < WH_MAX_MSG do
begin
if FWndHandler.FMsgMap[I] = Self then
begin
while PeekMessage(Msg, Handle, I + FWndHandler.FMsgLow,
I + FWndHandler.FMsgLow, PM_REMOVE) do
begin
New(P);
//P^.hwnd := Msg.hwnd;
P^.message := Msg.message;
P^.wParam := Msg.wParam;
P^.lParam := Msg.lParam;
P^.time := Msg.time;
L.Add(P);
end;
end;
Inc(I);
end;
L.Sort(@CmpFunc);
for Idx := 0 to L.Count - 1 do
PostMessage(NewHwnd, PMsg(L[Idx])^.message, PMsg(L[Idx])^.wParam,
PMsg(L[Idx])^.lParam);
finally
for Idx := 0 to L.Count - 1 do
System.Dispose(L[IDX]);
L.Free;
end;
end;
> --
> [EMAIL PROTECTED]
> http://www.overbyte.be
>
>
>
> ----- Original Message -----
> From: "Arno Garrels" <[EMAIL PROTECTED]>
> To: "ICS support mailing" <[email protected]>
> Sent: Sunday, June 11, 2006 9:49 AM
> Subject: Re: [twsocket] Enhancements for Thread Attach/Detach methods
>
>
>> Francois PIETTE wrote:
>>>> AFAIK winsock API function WSAAsyncSelect() is a common, blocking
>>>> function. In this case it's called to disable winsock
>>>> notifications. Because the window is detached/destroyed in
>>>> subsequent lines. BTW: Same is done in V5.
>>>> So for a short while the detached socket is windowless, that's
>>>> why I suggested to wait w/o processing messages until it is
>>>> attached again (not nice but worked for me).
>>>
>>> To be safe, the order should be:
>>> 1) Stop notifications from winsock (WSAAsyncSelect) to the current
>>> (old) hidden window
>>> 2) Create the new hidden window
>>> 3) Extract all messages from old hidden window queue and push them
>>> to the new queue
>>
>> In V6, how can I extract messages of the to be detached socket only?
>> Is it Peekmessage(Msg, OldHWnd, MsgLow, MsgLow + MsgCnt, PM_REMOVE)?
>>
>> ---
>> Arno Garrels [TeamICS]
>> http://www.overbyte.be/eng/overbyte/teamics.html
>>
>>
>>
>>> 4) Restart notifications from winsock to the new hidden window
>>>
>>> Probably a good idea to post a FD_READ message in the new queue
>>> between 3 and 4 above. Because it may happend that data has been
>>> received during the time interval when notifications have been
>>> disabled.
>>>
>>> --
>>> [EMAIL PROTECTED]
>>> http://www.overbyte.be
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