140 lines
5.5 KiB
C++
140 lines
5.5 KiB
C++
/*--------------------------------------------------------------------------*
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*
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* Microsoft Windows
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* Copyright (C) Microsoft Corporation, 1999
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*
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* File: MMCAxWin.h
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*
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* Contents: Header file for CMMCAxWindow
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*
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* History: 30-Nov-99 VivekJ Created
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*
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*--------------------------------------------------------------------------*/
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#pragma once
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DEFINE_COM_SMARTPTR(IHTMLElement2); // IHTMLElement2Ptr
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DEFINE_COM_SMARTPTR(IElementBehaviorFactory); // IElementBehaviorFactoryPtr
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/*+-------------------------------------------------------------------------*
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* HACK_CAN_WINDOWLESS_ACTIVATE
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*
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* Bug 451918: By default, the ATL OCX host window supports hosting
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* windowless controls. This differs from the MMC 1.2 implementation
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* of the OCX host window (which used MFC), which did not. Some controls
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* (e.g. Disk Defragmenter OCX) claim to support windowless activation
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* but do not.
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*
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* For compatibility, we must only instantiate result pane OCX's as
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* windowed controls. IInPlaceSiteWindowless (implemented by CAxHostWindow)
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* gives us a nice clean way to do this, by returning S_FALSE from
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* CanWindowlessActivate. We instruct CAxHostWindow to do this by changing its
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* AllowWindowlessActivation property.
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*
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* There's a problem with that, however. ATL21 has a bug where it tests
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* for CanWindowlessActivate returning a FAILED code rather than S_FALSE.
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* This means that even if we use put_AllowWindowlessActivation, ATL21-based
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* controls will still try to activate windowless.
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*
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* We'll fix this problem by deriving a class, CMMCAxHostWindow, from
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* CAxHostWindow which will return E_FAIL instead of S_FALSE if windowless
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* activation is not desired.
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*--------------------------------------------------------------------------*/
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#define HACK_CAN_WINDOWLESS_ACTIVATE
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/*+-------------------------------------------------------------------------*
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* class CMMCAxWindow
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*
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*
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* PURPOSE: The MMC-specific version of CAxWindow. Contains any fixes and
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* updates.
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* Refer to the December 1999 issue of Microsoft Systems Journal
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* for details, in the article "Extending ATL3.0 Control Containers
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* to Help you write Real-World Containers."
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*
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*+-------------------------------------------------------------------------*/
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class CMMCAxWindow : public CAxWindowImplT<CMMCAxWindow, CAxWindow2>
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{
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#ifdef HACK_CAN_WINDOWLESS_ACTIVATE
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public:
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HRESULT AxCreateControl2(LPCOLESTR lpszName, HWND hWnd, IStream* pStream, IUnknown** ppUnkContainer, IUnknown** ppUnkControl = 0, REFIID iidSink = IID_NULL, IUnknown* punkSink = 0);
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#endif
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// Simply override of CAxWindow::SetFocus that handles more special cases
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// NOTE: this is not a virtual method. Invoking on base class pointer will
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// endup in executing other method.
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// this method is added mainly to cope with bug 433228 (MMC2.0 Can not tab in a SQL table)
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HWND SetFocus();
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};
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/*+-------------------------------------------------------------------------*
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* CMMCAxHostWindow
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*
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* Simple class that overrides IInPlaceSiteWindowless::CanWindowlessActivate
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* to work around an ATL21 bug. See comments for HACK_CAN_WINDOWLESS_ACTIVATE
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* for details.
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*--------------------------------------------------------------------------*/
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class CMMCAxHostWindow : public CAxHostWindow
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{
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#ifdef HACK_CAN_WINDOWLESS_ACTIVATE
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public:
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#ifdef _ATL_HOST_NOLOCK
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typedef CComCreator< CComObjectNoLock< CMMCAxHostWindow > > _CreatorClass;
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#else
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DECLARE_POLY_AGGREGATABLE(CMMCAxHostWindow)
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#endif
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STDMETHOD(CanWindowlessActivate)()
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{
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return m_bCanWindowlessActivate ? S_OK : E_FAIL /*S_FALSE*/;
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}
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// Added to solve bug 453609 MMC2.0: ActiveX container: Painting problems with the device manager control
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// implements workarround for DISPID_AMBIENT_SHOWGRABHANDLES and DISPID_AMBIENT_SHOWHATCHING
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// the actual bug is in ALT 3.0 (atliface.idl)
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STDMETHOD(Invoke)( DISPID dispIdMember, REFIID riid, LCID lcid,
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WORD wFlags, DISPPARAMS FAR* pDispParams,
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VARIANT FAR* pVarResult, EXCEPINFO FAR* pExcepInfo,
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unsigned int FAR* puArgErr);
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// Added to solve bug 453609 MMC2.0: ActiveX container: Painting problems with the device manager control
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// Since ATL 3.0 does not implement it, we have to do it to make MFC controls happy
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STDMETHOD(OnPosRectChange)(LPCRECT lprcPosRect);
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#if _ATL_VER <= 0x0301
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BEGIN_MSG_MAP(CMMCAxHostWindow)
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MESSAGE_HANDLER(WM_SETFOCUS, OnSetFocus)
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CHAIN_MSG_MAP(CAxHostWindow)
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END_MSG_MAP()
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// We handle focus here specifically because of bogus implementation in ATL 3.0
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// ATL tests m_bInPlaceActive instead of m_bUIActive.
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// We need to test this rigorously so that we don't break other snapins.
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// See bug 433228 (MMC2.0 Can not tab in a SQL table)
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LRESULT OnSetFocus(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled);
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#else
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#error The code above was added as fix to bug in ATL 3.0; It needs to be revisited
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// since:
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// a) the bug may be fixed on newer ATL versions;
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// b) it relies on variables defined in ATL, which may change;
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#endif
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#endif /* HACK_CAN_WINDOWLESS_ACTIVATE */
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public:
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STDMETHOD(QueryService)( REFGUID rsid, REFIID riid, void** ppvObj); // used to supply the default behavior factory
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private:
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IElementBehaviorFactoryPtr m_spElementBehaviorFactory;
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};
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#include "mmcaxwin.inl"
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