Re: PostMessage and unprocessed messages
"Joseph M. Newcomer" <newcomer@flounder.com> ha scritto nel messaggio
news:i703t3hfs4qegp7hekukshjt7b1d83c1id@4ax.com...
bool Create()
{
...
m_thread = ::CreateThread(
****
Do you know if this is safe in ATL/WTL? Do you know what these frameworks
need for
correct operation? Note: you CANNOT use ::CreateThread like this anyway;
you would have
to use _beginthreadex so the C runtime is properly initialized.
****
Joe: frankly speaking I ignore if ATL/WTL requires more complex things...
(I may ask the ATL group, but I think ATL does not... ATL is a very thin
wrapper on Win32, we must write the WinMain in ATL, in other words: when we
use MFC, MFC "drives" and call our code, instead my understanding in ATL/WTL
is that we "drive" and we call ATL/WTL when necessary; ATL is like having
some helper classes for Win32, to offer the C++ programmer a C++
object-oriented programming model for Win32, but without being a "full"
framework like MFC is.)
I used ::CreateThread in this way, and after implementing Scott M.'s
suggestion, I have no leaks and the test app seems running fine...
I did neither call _beginthreadex nor did more complex things...
Should I expect disasters? :)
(As I already said, I'm not very experienced with multithreading.)
static DWORD WINAPI StaticThreadProc( LPVOID param )
{
Thread * me = (Thread *)param;
return me->ThreadProc();
}
***
OK, try to be explicit about what you are doing.
Joe: I apologize for not being clear enough in my initial explanation.
But note that there is no reason to use
an HWND when a CWnd* will do the job.
In ATL using HWND is very common...
****
Having the destructor close the handle is suspect. And who deletes the
thread object?
The parent owner class (i.e. the dialog class, that "owns" the thread, and
as a Thread * as data member), deletes the thread pointer, and so the
destructor calls CloseHandle and does safe cleanup, as shown in my posted
code.
MFC does something along the lines of
static DWORD WINAPI StaticThreadProc( LPVOID param )
{
Thread * me = (Thread *)param;
DWORD result = me->ThreadProc();
delete me;
return result;
}
I don't do auto-deletes.
Thanks again for your time,
Giovanni