Fyzika a matematika

Namiesto:

/* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }

použiť:

HANDLE File;
HANDLE Event;
OVERLAPPED Overlapped;

File=CreateFile(...,FILE_FLAG_OVERLAPPED,...);

Event=CreateEvent(....);
Overlapped.hEvent=Event;

// start new async read request
ReadFile(File,....,&Overlapped);

while(1)
{
DWORD Result;

Result=MsgWaitForMultipleObjects(1,&Event,FALSE,INFINITE,
QS_ALLEVENTS | QS_ALLPOSTMESSAGE | QS_SENDMESSAGE);

if (Result==WAIT_OBJECT_0)
{
// get data ..
GetOverlappedResult(File,&Overlapped,....);

// copy data from Overlapped somewhere

// start new async read request
ReadFile(File,....,&Overlapped);
}

if (Result==WAIT_OBJECT_0+1)
{
while (PeekMessage(&Msg, NULL, 0, 0, PM_REMOVE))
  {
if (Msg.message == WM_QUIT)
  {
break;
}
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}

if (Msg.message==WM_QUIT)
{
break;
}
}
}

// must cancel all pending requests !!!!
CancelIo(File);

http://forum.root.cz/index.php?topic=8440.0