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Applied patch #9510: wxIAccessible access freed memory

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by Cyball


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62068 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart 2009-09-24 10:15:20 +00:00
parent e2bc58263e
commit d561e1a5fb
1 changed files with 33 additions and 19 deletions
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52
src/msw/ole/access.cpp
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@ -187,6 +187,9 @@ class wxIAccessible : public IAccessible
public:
wxIAccessible(wxAccessible *pAccessible);
// Called to indicate object should prepare to be deleted.
void Quiesce();
DECLARE_IUNKNOWN_METHODS;
// IAccessible
@ -334,6 +337,7 @@ public:
private:
wxAccessible *m_pAccessible; // pointer to C++ class we belong to
bool m_bQuiescing; // Object is to be deleted
wxDECLARE_NO_COPY_CLASS(wxIAccessible);
};
@ -358,6 +362,15 @@ wxIAccessible::wxIAccessible(wxAccessible *pAccessible)
wxASSERT( pAccessible != NULL );
m_pAccessible = pAccessible;
m_bQuiescing = false;
}
// Called to indicate object should prepare to be deleted.
void wxIAccessible::Quiesce()
{
m_bQuiescing = true;
m_pAccessible = NULL;
}
// Retrieves the child element or child object at a given point on the screen.
@ -366,7 +379,7 @@ wxIAccessible::wxIAccessible(wxAccessible *pAccessible)
STDMETHODIMP wxIAccessible::accHitTest(long xLeft, long yLeft, VARIANT* pVarID)
{
wxLogTrace(wxT("access"), wxT("accHitTest"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -435,7 +448,7 @@ STDMETHODIMP wxIAccessible::accHitTest(long xLeft, long yLeft, VARIANT* pVarID)
STDMETHODIMP wxIAccessible::accLocation ( long* pxLeft, long* pyTop, long* pcxWidth, long* pcyHeight, VARIANT varID)
{
wxLogTrace(wxT("access"), wxT("accLocation"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -481,7 +494,7 @@ STDMETHODIMP wxIAccessible::accLocation ( long* pxLeft, long* pyTop, long* pcxWi
STDMETHODIMP wxIAccessible::accNavigate ( long navDir, VARIANT varStart, VARIANT* pVarEnd)
{
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
wxLogTrace(wxT("access"), wxString(wxT("accNavigate for ")) + m_pAccessible->GetWindow()->GetClassInfo()->GetClassName());
@ -638,7 +651,7 @@ STDMETHODIMP wxIAccessible::accNavigate ( long navDir, VARIANT varStart, VARIANT
STDMETHODIMP wxIAccessible::get_accChild ( VARIANT varChildID, IDispatch** ppDispChild)
{
wxLogTrace(wxT("access"), wxT("get_accChild"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -712,7 +725,7 @@ STDMETHODIMP wxIAccessible::get_accChild ( VARIANT varChildID, IDispatch** ppDis
STDMETHODIMP wxIAccessible::get_accChildCount ( long* pCountChildren)
{
wxLogTrace(wxT("access"), wxT("get_accChildCount"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -756,7 +769,7 @@ STDMETHODIMP wxIAccessible::get_accChildCount ( long* pCountChildren)
STDMETHODIMP wxIAccessible::get_accParent ( IDispatch** ppDispParent)
{
wxLogTrace(wxT("access"), wxT("get_accParent"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -820,7 +833,7 @@ STDMETHODIMP wxIAccessible::get_accParent ( IDispatch** ppDispParent)
STDMETHODIMP wxIAccessible::accDoDefaultAction(VARIANT varID)
{
wxLogTrace(wxT("access"), wxT("accDoDefaultAction"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -865,7 +878,7 @@ STDMETHODIMP wxIAccessible::accDoDefaultAction(VARIANT varID)
STDMETHODIMP wxIAccessible::get_accDefaultAction ( VARIANT varID, BSTR* pszDefaultAction)
{
wxLogTrace(wxT("access"), wxT("get_accDefaultAction"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -925,7 +938,7 @@ STDMETHODIMP wxIAccessible::get_accDefaultAction ( VARIANT varID, BSTR* pszDefau
STDMETHODIMP wxIAccessible::get_accDescription ( VARIANT varID, BSTR* pszDescription)
{
wxLogTrace(wxT("access"), wxT("get_accDescription"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -982,7 +995,7 @@ STDMETHODIMP wxIAccessible::get_accDescription ( VARIANT varID, BSTR* pszDescrip
STDMETHODIMP wxIAccessible::get_accHelp ( VARIANT varID, BSTR* pszHelp)
{
wxLogTrace(wxT("access"), wxT("get_accHelp"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1042,7 +1055,7 @@ STDMETHODIMP wxIAccessible::get_accHelp ( VARIANT varID, BSTR* pszHelp)
STDMETHODIMP wxIAccessible::get_accHelpTopic ( BSTR* pszHelpFile, VARIANT varChild, long* pidTopic)
{
wxLogTrace(wxT("access"), wxT("get_accHelpTopic"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1087,7 +1100,7 @@ STDMETHODIMP wxIAccessible::get_accKeyboardShortcut ( VARIANT varID, BSTR* pszKe
wxLogTrace(wxT("access"), wxT("get_accKeyboardShortcut"));
*pszKeyboardShortcut = NULL;
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1146,7 +1159,7 @@ STDMETHODIMP wxIAccessible::get_accName ( VARIANT varID, BSTR* pszName)
wxLogTrace(wxT("access"), wxT("get_accName"));
*pszName = NULL;
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1197,7 +1210,7 @@ STDMETHODIMP wxIAccessible::get_accName ( VARIANT varID, BSTR* pszName)
STDMETHODIMP wxIAccessible::get_accRole ( VARIANT varID, VARIANT* pVarRole)
{
wxLogTrace(wxT("access"), wxT("get_accRole"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1257,7 +1270,7 @@ STDMETHODIMP wxIAccessible::get_accRole ( VARIANT varID, VARIANT* pVarRole)
STDMETHODIMP wxIAccessible::get_accState ( VARIANT varID, VARIANT* pVarState)
{
wxLogTrace(wxT("access"), wxT("get_accState"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1308,7 +1321,7 @@ STDMETHODIMP wxIAccessible::get_accState ( VARIANT varID, VARIANT* pVarState)
STDMETHODIMP wxIAccessible::get_accValue ( VARIANT varID, BSTR* pszValue)
{
wxLogTrace(wxT("access"), wxT("get_accValue"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1360,7 +1373,7 @@ STDMETHODIMP wxIAccessible::get_accValue ( VARIANT varID, BSTR* pszValue)
STDMETHODIMP wxIAccessible::accSelect ( long flagsSelect, VARIANT varID )
{
wxLogTrace(wxT("access"), wxT("get_accSelect"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1407,7 +1420,7 @@ STDMETHODIMP wxIAccessible::accSelect ( long flagsSelect, VARIANT varID )
STDMETHODIMP wxIAccessible::get_accFocus ( VARIANT* pVarID)
{
wxLogTrace(wxT("access"), wxT("get_accFocus"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1474,7 +1487,7 @@ STDMETHODIMP wxIAccessible::get_accSelection ( VARIANT * pVarChildren)
{
#if wxUSE_VARIANT
wxLogTrace(wxT("access"), wxT("get_accSelection"));
wxASSERT (m_pAccessible != NULL);
wxASSERT( ( m_pAccessible != NULL ) || ( m_bQuiescing == true ) );
if (!m_pAccessible)
return E_FAIL;
@ -1706,6 +1719,7 @@ wxAccessible::wxAccessible(wxWindow* win)
wxAccessible::~wxAccessible()
{
m_pIAccessible->Quiesce();
m_pIAccessible->Release();
if (m_pIAccessibleStd)
((IAccessible*)m_pIAccessibleStd)->Release();