Re: Crash in ActiveX control (developed in ATL) at design time in Visual C++ .Net

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

You don't need to do anything in OnCreate. Check in the
call stack who created this window and trace it up to the entry
point into your DLL. You need to add AFX_MANAGE_STATE
there. I simply assumed it is an interface method...

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

"Tuckers" <matt@xxxxxxxx> wrote in message news:di59e0$jeu$1@xxxxxxxxxxxxx
> Thanks Alexander,
>
> I have tried this, though the method that it fails on is OnCreate and is
> not
> an interface. I have not yet added any interfaces to the control. It is
> however crashing in AfxGetInstanceHandle().
>
> Tuckers
>
>
> "Alexander Nickolov" <agnickolov@xxxxxxxx> wrote in message
> news:%232JE3SpyFHA.2652@xxxxxxxxxxxxxxxxxxxxxxx
>> Do you have proper AFX_MANAGE_STATE macros used
>> throughout your entry points (e.g. interface methods)?
>>
>> --
>> =====================================
>> Alexander Nickolov
>> Microsoft ex-MVP [VC], MCSD
>> email: agnickolov@xxxxxxxx
>> MVP VC FAQ: http://www.mvps.org/vcfaq
>> =====================================
>>
>> "Tuckers" <matt@xxxxxxxx> wrote in message
>> news:di319q$924$1@xxxxxxxxxxxxx
>> > Hi,
>> >
>> > We are developing an activeX control in ATL. It uses some COTS software
>> > written in MFC which requires a handle to a Cwnd. We can do this no
>> > problem.
>> > But when I hit the test button in Visual .Net 2003 it crashs the IDE.
>> >
>> > The offending code is
>> >
>> > LRESULT OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/,
>> > BOOL&
>> > /*bHandled*/)
>> > {
>> >
>> > RECT rc;
>> > GetWindowRect(&rc);
>> > rc.right -= rc.left;
>> > rc.bottom -= rc.top;
>> > rc.top = rc.left = 0;
>> > m_ctlStatic.Create(m_hWnd, rc);
>> > m_wnd = CWnd::FromHandle( m_ctlStatic.m_hWnd );
>> > CRect rect( rc );
>> > m_grid.CreateGrid(WS_CHILD|WS_VISIBLE,rect,m_wnd,1234); <-
>> > **************crashs********
>> > return 0;
>> > }
>> >
>> >
>> > The function it crashes in is AfxGetInstanceHandle(). Does anyone have
> any
>> > ideas why this is happening. BTW it is fine in c#.
>> >
>> > Cheers
>> >
>> > Tuckers
>> >
>> >
>>
>>
>
>
>


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