SwndAccessible.h（SAccessible 接口实现 IAccHelper、IAccessible）

#pragma once
#include <oleacc.h>
#include <helper/SUnknown.h>
#include "Swnd.h"
#include "interface/sacchelper-i.h"

SNSBEGIN

#ifdef SOUI_ENABLE_ACC

class SOUI_EXP SAccessible
    : public IAccessible
    , public IAccHelper
    , public SUnknown {
  protected:
    SWindow *m_pWnd;

  public:
    SAccessible(SWindow *pWnd);
    ~SAccessible();

  protected:
    BOOL accValidateNavStart(VARIANT *pvar) const;

  public:
    // Implement IAccHelper
	STDMETHOD_(void, SetOwner)(THIS_ IWindow * pOwner) OVERRIDE{
		m_pWnd = (SWindow*)pOwner;
	}
	STDMETHOD_(IWindow *, GetOwner)(CTHIS) SCONST OVERRIDE{
		return m_pWnd;
	}

    // Implement IAccessible
    STDMETHODIMP get_accParent(IDispatch **ppdispParent);
    STDMETHODIMP get_accChildCount(long *pcountChildren);
    STDMETHODIMP get_accChild(VARIANT varChild, IDispatch **ppdispChild);
    STDMETHODIMP get_accName(VARIANT varChild, BSTR *pszName);
    STDMETHODIMP get_accValue(VARIANT varChild, BSTR *pszValue);
    STDMETHODIMP get_accDescription(VARIANT varChild, BSTR *pszDescription);
    STDMETHODIMP get_accRole(VARIANT varChild, VARIANT *pvarRole);
    STDMETHODIMP get_accState(VARIANT varChild, VARIANT *pvarState);
    STDMETHODIMP get_accHelp(VARIANT varChild, BSTR *pszHelp);
    STDMETHODIMP get_accHelpTopic(BSTR *pszHelpFile, VARIANT varChild, long *pidTopic);
    STDMETHODIMP get_accKeyboardShortcut(VARIANT varChild, BSTR *pszKeyboardShortcut);
    STDMETHODIMP get_accFocus(VARIANT *pvarChild);
    STDMETHODIMP get_accSelection(VARIANT *pvarChildren);
    STDMETHODIMP get_accDefaultAction(VARIANT varChild, BSTR *pszDefaultAction);
    STDMETHODIMP accSelect(long flagsSelect, VARIANT varChild);
    STDMETHODIMP accLocation(long *pxLeft, long *pyTop, long *pcxWidth, long *pcyHeight, VARIANT varChild);
    STDMETHODIMP accNavigate(long navDir, VARIANT varStart, VARIANT *pvarEndUpAt);
    STDMETHODIMP accHitTest(long xLeft, long yTop, VARIANT *pvarChild);
    STDMETHODIMP accDoDefaultAction(VARIANT varChild);
    STDMETHODIMP put_accName(VARIANT varChild, BSTR szName);
    STDMETHODIMP put_accValue(VARIANT varChild, BSTR szValue);

    // Implement IDispatch
    STDMETHODIMP GetTypeInfoCount(unsigned int FAR *pctinfo);
    STDMETHODIMP GetTypeInfo(unsigned int iTInfo, LCID lcid, ITypeInfo FAR *FAR *ppTInfo);
    STDMETHODIMP GetIDsOfNames(REFIID riid, OLECHAR FAR *FAR *rgszNames, unsigned int cNames, LCID lcid, DISPID FAR *rgDispId);
    STDMETHODIMP Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS FAR *pDispParams, VARIANT FAR *pVarResult, EXCEPINFO FAR *pExcepInfo, unsigned int FAR *puArgErr);

  public:
    IUNKNOWN_BEGIN(IAccessible)
    IUNKNOWN_ADD_IID(IAccHelper)
    IUNKNOWN_ADD_IID(IDispatch)
    IUNKNOWN_END()
};
#endif // SOUI_ENABLE_ACC
SNSEND