oledb32: Implement GetConversionSize DBTYPE_VARIANT->DBTYPE_WSTR.
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@ -1113,6 +1113,20 @@ static HRESULT WINAPI convert_GetConversionSize(IDataConvert* iface,
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{
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switch (src_type)
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{
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case DBTYPE_VARIANT:
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{
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VARIANT v;
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VariantInit(&v);
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if ((hr = VariantChangeType(&v, (VARIANT*)src, 0, VT_BSTR)) == S_OK)
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{
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*dst_len = (SysStringLen(V_BSTR(&v)) + 1) * sizeof(WCHAR);
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VariantClear(&v);
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}
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else
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return hr;
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}
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break;
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case DBTYPE_STR:
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if(src_len)
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*dst_len = (*src_len + 1) * sizeof(WCHAR);
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@ -2339,6 +2339,7 @@ static void test_getconversionsize(void)
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BSTR str;
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static WCHAR strW[] = {'t','e','s','t',0};
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static char strTest[] = "test";
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VARIANT var;
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/* same way as CanConvert fails here */
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dst_len = 0;
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@ -2394,6 +2395,33 @@ static void test_getconversionsize(void)
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hr = IDataConvert_GetConversionSize(convert, DBTYPE_STR, DBTYPE_WSTR, &src_len, &dst_len, strTest);
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ok(hr == S_OK, "got 0x%08x\n", hr);
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ok(dst_len == 42, "%ld\n", dst_len);
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dst_len = 0;
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V_VT(&var) = VT_BSTR;
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V_BSTR(&var) = SysAllocString(strW);
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hr = IDataConvert_GetConversionSize(convert, DBTYPE_VARIANT, DBTYPE_WSTR, NULL, &dst_len, &var);
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ok(hr == S_OK, "got 0x%08x\n", hr);
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ok(dst_len == 10, "%ld\n", dst_len);
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VariantClear(&var);
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dst_len = 0;
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src_len = 20;
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V_VT(&var) = VT_BSTR;
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V_BSTR(&var) = SysAllocString(strW);
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hr = IDataConvert_GetConversionSize(convert, DBTYPE_VARIANT, DBTYPE_WSTR, &src_len, &dst_len, &var);
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ok(hr == S_OK, "got 0x%08x\n", hr);
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ok(dst_len == 10, "%ld\n", dst_len);
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VariantClear(&var);
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dst_len = 0;
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src_len = 20;
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V_VT(&var) = VT_I4;
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V_I4(&var) = 4;
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hr = IDataConvert_GetConversionSize(convert, DBTYPE_VARIANT, DBTYPE_WSTR, &src_len, &dst_len, &var);
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ok(hr == S_OK, "got 0x%08x\n", hr);
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todo_wine ok(dst_len == 110, "%ld\n", dst_len);
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VariantClear(&var);
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}
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static void test_converttovar(void)
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