Re: access to m_hWnd

From:

"Alexander Nickolov" <agnickolov@mvps.org>

Newsgroups:

microsoft.public.vc.atl

Date:

Tue, 4 Sep 2007 10:25:56 -0700

Message-ID:

<et4kcix7HHA.1208@TK2MSFTNGP05.phx.gbl>

Most likely your control is activated windowless. If you insist
on using a window, you need to state so by adding the following
line to your control's constructor:

m_bWindowOnly = TRUE;

BTW, note that your window handle is only valid when you
are activated. Your control may be running inactive, for example
in design mode in your Visual C++ resource editor.

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://vcfaq.mvps.org
=====================================

"oSkAr" <oSkAr@discussions.microsoft.com> wrote in message
news:CAD3E4AB-8097-4C11-A154-6A2CDB601C3E@microsoft.com...

Hello

Initiate a project ATL and I have added a class control

but treatment to call any method that it has to do with m_hWnd, marks an
error to me

I think that something lacks me when beginning

regards

oscar

excuse my English, I am using a translator

/////////////////////////////////////////////////////////////
//// ERROR
/////////////////////////////////////////////////////////////
---------------------------
Microsoft Visual C++ Debug Library
---------------------------
Debug Assertion Failed!

Program: ...
File: d:\archivos de programa\microsoft visual studio
8\vc\atlmfc\include\atlwin.h
Line: 960

Expression: ::IsWindow(m_hWnd)

For information on how your program can cause an assertion
failure, see the Visual C++ documentation on asserts.

(Press Retry to debug the application)
---------------------------
Anular Reintentar Omitir
---------------------------

////////////////////////////////////////////////////////////////////////
///////// CODE
///////////////////////////////////////////////////////////////////////

LRESULT Cmiocx::OnLButtonUp(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM
/*lParam*/, BOOL& /*bHandled*/)
{
RECT rc;
GetWindowRect( &rc );
return 0;
}