C++ wxVariant::GetCount方法代码示例

void LogVariant(const wxString& prefix, const wxVariant& v)
{
    const wxString type = v.GetType();

    wxString info;
    const wxString& name = v.GetName();
    if (type == wxS("arrstring")) {
        wxArrayString as = v.GetArrayString();
        info.Printf(wxS("%svariant type: \"%s\", element count: %zu, name: \"%s\"."),
            prefix, type, as.size(), name);        
        wxLogTrace(wxTRACE_AutoExcel, wxS("%s"), info);
        for (size_t i = 0; i < as.size(); i++) 
        {
            info.Printf(wxS("   string #%zu value: \"%s\""), i, as[i]);
            if ( i == LogVariantMaxItemsInList )
            {
                wxLogTrace(wxTRACE_AutoExcel, wxS("And %zu more strings"), as.size() - i);
                break;
            }
            else            
                wxLogTrace(wxTRACE_AutoExcel, wxS("%s"), info);
        }
        return;
    }
    if (type == wxS("list")) {
        info.Printf(wxS("%sVariant type: \"%s\", element count: %zu, name: \"%s\"."),
            prefix, type, v.GetCount(), name);
        wxLogTrace(wxTRACE_AutoExcel, wxS("%s"), info);
        for (size_t i = 0; i < v.GetCount(); i++)
        {
            if ( i == LogVariantMaxItemsInList )
            {
                wxLogTrace(wxTRACE_AutoExcel, wxS("And %zu more variants"), v.GetCount() - i);
                break;
            } else            
            {
                const wxVariant& vTmp = v[i];
                info.Printf(wxS("   variant #%zu type: \"%s\", value: \"%s\", name: \"%s\"."),
                    i, vTmp.GetType(), vTmp.MakeString(), vTmp.GetName());        
                wxLogTrace(wxTRACE_AutoExcel, wxS("%s"), info);
            }
        }
        return;
    }
    if (type == wxS("void*") && v.GetVoidPtr() != NULL) {
        wxString automationName;
        wxExcelObject object;
        IDispatch* dispatch = (IDispatch*)v.GetVoidPtr();
        dispatch->AddRef();
        object.GetAutomationObject_()->SetDispatchPtr(dispatch);
        info.Printf(wxS("%svariant type: \"IDispatch - %s\", value: \"%s\", name: \"%s\"."),
            prefix, object.GetAutomationObjectName_(false), v.MakeString(), name);    
    } else {
        info.Printf(wxS("%svariant type: \"%s\", value: \"%s\", name: \"%s\"."),
            prefix, type, v.MakeString(), name);        
    }
    wxLogTrace(wxTRACE_AutoExcel, wxS("%s"), info);
}

WXDLLEXPORT bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
{
    VariantInit(&oleVariant);
    if (variant.IsNull())
    {
        oleVariant.vt = VT_NULL;
        return true;
    }

    wxString type(variant.GetType());


    if (type == wxT("long"))
    {
        oleVariant.vt = VT_I4;
        oleVariant.lVal = variant.GetLong() ;
    }
    else if (type == wxT("char"))
    {
        oleVariant.vt=VT_I1;            // Signed Char
        oleVariant.cVal=variant.GetChar();
    }
    else if (type == wxT("double"))
    {
        oleVariant.vt = VT_R8;
        oleVariant.dblVal = variant.GetDouble();
    }
    else if (type == wxT("bool"))
    {
        oleVariant.vt = VT_BOOL;
        oleVariant.boolVal = variant.GetBool();
    }
    else if (type == wxT("string"))
    {
        wxString str( variant.GetString() );
        oleVariant.vt = VT_BSTR;
        oleVariant.bstrVal = wxConvertStringToOle(str);
    }
#if wxUSE_DATETIME
    else if (type == wxT("datetime"))
    {
        wxDateTime date( variant.GetDateTime() );
        oleVariant.vt = VT_DATE;

        SYSTEMTIME st;
        date.GetAsMSWSysTime(&st);

        SystemTimeToVariantTime(&st, &oleVariant.date);
    }
#endif
    else if (type == wxT("void*"))
    {
        oleVariant.vt = VT_DISPATCH;
        oleVariant.pdispVal = (IDispatch*) variant.GetVoidPtr();
    }
    else if (type == wxT("list") || type == wxT("stringlist"))
    {
        oleVariant.vt = VT_VARIANT | VT_ARRAY;

        SAFEARRAY *psa;
        SAFEARRAYBOUND saBound;
        VARIANTARG *pvargBase;
        VARIANTARG *pvarg;
        int i, j;

        int iCount = variant.GetCount();

        saBound.lLbound = 0;
        saBound.cElements = iCount;

        psa = SafeArrayCreate(VT_VARIANT, 1, &saBound);
        if (psa == NULL)
            return false;

        SafeArrayAccessData(psa, (void**)&pvargBase);

        pvarg = pvargBase;
        for (i = 0; i < iCount; i++)
        {
            // copy each string in the list of strings
            wxVariant eachVariant(variant[i]);
            if (!wxConvertVariantToOle(eachVariant, * pvarg))
            {
                // memory failure:  back out and free strings alloc'ed up to
                // now, and then the array itself.
                pvarg = pvargBase;
                for (j = 0; j < i; j++)
                {
                    SysFreeString(pvarg->bstrVal);
                    pvarg++;
                }
                SafeArrayDestroy(psa);
                return false;
            }
            pvarg++;
        }

        SafeArrayUnaccessData(psa);

        oleVariant.parray = psa;
//.........这里部分代码省略.........

WXDLLEXPORT bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
{
    VariantInit(&oleVariant);
    if (variant.IsNull())
    {
        oleVariant.vt = VT_NULL;
        return true;
    }

    wxString type(variant.GetType());


    if (type == wxT("long"))
    {
        oleVariant.vt = VT_I4;
        oleVariant.lVal = variant.GetLong() ;
    }
    // Original VC6 came with SDK too old to contain VARIANT::llVal declaration
    // and there doesn't seem to be any way to test for it as Microsoft simply
    // added it to the later version of oaidl.h without changing anything else.
    // So assume it's not present for VC6, even though it might be if an
    // updated SDK is used. In this case the user would need to disable this
    // check himself.
#if wxUSE_LONGLONG && !defined(__VISUALC6__)
    else if (type == wxT("longlong"))
    {
        oleVariant.vt = VT_I8;
        oleVariant.llVal = variant.GetLongLong().GetValue();
    }
#endif
    else if (type == wxT("char"))
    {
        oleVariant.vt=VT_I1;            // Signed Char
        oleVariant.cVal=variant.GetChar();
    }
    else if (type == wxT("double"))
    {
        oleVariant.vt = VT_R8;
        oleVariant.dblVal = variant.GetDouble();
    }
    else if (type == wxT("bool"))
    {
        oleVariant.vt = VT_BOOL;
        oleVariant.boolVal = variant.GetBool() ? VARIANT_TRUE : VARIANT_FALSE;
    }
    else if (type == wxT("string"))
    {
        wxString str( variant.GetString() );
        oleVariant.vt = VT_BSTR;
        oleVariant.bstrVal = wxConvertStringToOle(str);
    }
#if wxUSE_DATETIME
    else if (type == wxT("datetime"))
    {
        wxDateTime date( variant.GetDateTime() );
        oleVariant.vt = VT_DATE;

        SYSTEMTIME st;
        date.GetAsMSWSysTime(&st);

        SystemTimeToVariantTime(&st, &oleVariant.date);
    }
#endif
    else if (type == wxT("void*"))
    {
        oleVariant.vt = VT_DISPATCH;
        oleVariant.pdispVal = (IDispatch*) variant.GetVoidPtr();
    }
    else if (type == wxT("list"))
    {
        wxSafeArrayHelper sah;

        if (!sah.Create(VT_VARIANT, variant.GetCount()))
            return false;

        for (size_t i = 0; i < variant.GetCount(); i++)
        {
            if (!sah.SetElement(i, variant[i]))
                return false;
        }

        oleVariant.vt = VT_VARIANT | VT_ARRAY;
        oleVariant.parray = sah.Detach();
    }
    else if (type == wxT("arrstring"))
    {
        wxArrayString strings(variant.GetArrayString());
        wxSafeArrayHelper sah;

        if (!sah.Create(VT_BSTR, strings.GetCount()))
            return false;

        for (size_t i = 0; i < strings.GetCount(); i++)
        {
            if (!sah.SetElement(i, strings[i]))
                return false;
        }

        oleVariant.vt = VT_BSTR | VT_ARRAY;
        oleVariant.parray = sah.Detach();
//.........这里部分代码省略.........