Re: CreateWindowEx AtlAxWin fails with last error 1407

From:
"Igor Tandetnik" <itandetnik@mvps.org>
Newsgroups:
microsoft.public.vc.atl
Date:
Mon, 29 Oct 2007 14:42:22 -0400
Message-ID:
<OZuXytlGIHA.5228@TK2MSFTNGP05.phx.gbl>
David Liebtag <DavidLiebtag@vermontel.net> wrote:

When I add these two lines the wnd.Create technique does not hit an
exception, but the calendar control is not visible in the child
container.


Works for me. Your WM_SIZE handler needed work (it referes to hWndX
variable that wasn't defined), but that fixed, I do see calendar control
in your test program.

The CreateWindow technique returns zero with last error also zero
when I use MSCAL.Calendar as the control class. When I use a URL, I
get a Debug Assertion Failed message box that asks me if I forgot to
pass LIBID to CComModule::Init.


Right, you need two more changes. First, call CoInitialize(0) somewhere
at the beginning of WinMain (and CoUninitialize at the end for
completeness). CAxWindow::Create happens to call it, so that's why it
works.

Second, change the module declaration to this:

class CDummyModule : public CAtlExeModuleT<CDummyModule> {
public:
    DECLARE_LIBID(LIBID_ATLLib);
};
CDummyModule _Module;

With these changes, CreateWindow-based path works for me in your test,
both for Calendar and for WebBrowser.
--
With best wishes,
    Igor Tandetnik

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