Re: MFC and User Defined objects

From:

"AliR $VC++ MVP$" <AliR@online.nospam>

Newsgroups:

microsoft.public.vc.mfc

Date:

Wed, 14 Mar 2007 15:03:07 GMT

Message-ID:

<L8UJh.5384$Um6.5236@newssvr12.news.prodigy.net>

That all depends on where you are creating the thread. If your dialog is a
modal dialog then you will have to create your thread from within the
OnInitDialog method, that's the first time you will know about the dialog's
HWND. If it's a modeless dialog then right after you call Create you can
access it's HWND.

AliR.

"one-trick-pony" <worldofpain.aamir@gmail.com> wrote in message
news:1173877249.518150.45990@b75g2000hsg.googlegroups.com...

Thanks for help,

I got it to work. Everything seems to be fine. I am able to post
messages to main gui thread produced inside user defined object.
However, I am a unsure of how and where is the appropriate place to
retrieve the main gui window handle. Is it done inside the adapter
that converts C win32 api to C++ and vice versa? Or do I retrieve
handle before thread creation?

Currently, I am retreiving main gui window handle just before running
code for thread creation. I tried retrieving handle using the code
below without success.

CString a;
CDummyDlg i;
HWND h = i.m_hWnd;
a.Format("i.m_hWnd %d", h);
AfxMessageBox(a);

This code fails. I don't understand why. It always gets 0 as
handle. What am I doing wrong? The code listed below works . I get
a valid window handle. But why can't I retrieve the handle using
above method? To me above code seems more logical.

HWND mywin;
mywin = ::FindWindow(0,"Dummy");
a.Format("Window Handle %d", mywin);
AfxMessageBox(a);

The other thing is I decalared mywin as a global variable. Because
otherwise, I get failure inside my c->c++ adapter code. It reports
that mywin is undeclared.

// Adapter code
UINT CDummyDlg::tMain(LPVOID p)
{

CDummyDlg * self = (CDummyDlg *)p;
self->tMain(mywin); <<< Here it says undeclared variable if I don't
make mywin global variable.
return 0;
}

If you guys eliminate some mysteries on how to appropriately construct
my code, that will help me become a better coder. Thanks.

If you see two posts, please disregard one.