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Don't call IAutoComplete::Init() twice for the same control as this leaks memory, just change the strings used for completion instead (closes #10968)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61493 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2009-07-22 14:30:29 +00:00
parent a7f2b179fb
commit 68e6eb7d67
2 changed files with 30 additions and 6 deletions
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12
include/wx/msw/textentry.h
View File

@ -18,7 +18,12 @@
class WXDLLIMPEXP_CORE wxTextEntry : public wxTextEntryBase
{
public:
wxTextEntry() { }
wxTextEntry()
{
#if wxUSE_OLE
m_enumStrings = NULL;
#endif // wxUSE_OLE
}
// implement wxTextEntryBase pure virtual methods
virtual void WriteText(const wxString& text);
@ -74,6 +79,11 @@ protected:
private:
// implement this to return the HWND of the EDIT control
virtual WXHWND GetEditHWND() const = 0;
#if wxUSE_OLE
// enumerator for strings currently used for auto-completion or NULL
class wxIEnumString *m_enumStrings;
#endif // wxUSE_OLE
};
#endif // _WX_MSW_TEXTENTRY_H_

24
src/msw/textentry.cpp
View File

@ -79,6 +79,12 @@ public:
m_index = 0;
}
void ChangeStrings(const wxArrayString& strings)
{
m_strings = strings;
Reset();
}
DECLARE_IUNKNOWN_METHODS;
virtual HRESULT STDMETHODCALLTYPE Next(ULONG celt,
@ -156,7 +162,7 @@ private:
virtual ~wxIEnumString() { }
const wxArrayString m_strings;
wxArrayString m_strings;
unsigned m_index;
wxDECLARE_NO_COPY_CLASS(wxIEnumString);
@ -334,6 +340,14 @@ bool wxTextEntry::AutoCompleteFileNames()
bool wxTextEntry::AutoComplete(const wxArrayString& choices)
{
#ifdef HAS_AUTOCOMPLETE
// if we had an old enumerator we must reuse it as IAutoComplete doesn't
// free it if we call Init() again (see #10968) -- and it's also simpler
if ( m_enumStrings )
{
m_enumStrings->ChangeStrings(choices);
return true;
}
// create an object exposing IAutoComplete interface (don't go for
// IAutoComplete2 immediately as, presumably, it might be not available on
// older systems as otherwise why do we have both -- although in practice I
@ -354,10 +368,10 @@ bool wxTextEntry::AutoComplete(const wxArrayString& choices)
}
// associate it with our strings
wxIEnumString *pEnumString = new wxIEnumString(choices);
pEnumString->AddRef();
hr = pAutoComplete->Init(GetEditHwnd(), pEnumString, NULL, NULL);
pEnumString->Release();
m_enumStrings = new wxIEnumString(choices);
m_enumStrings->AddRef();
hr = pAutoComplete->Init(GetEditHwnd(), m_enumStrings, NULL, NULL);
m_enumStrings->Release();
if ( FAILED(hr) )
{
wxLogApiError(_T("IAutoComplete::Init"), hr);