[Bug 30485] MeGUI 2112 crashes after first update / restart (application XML settings can't be fully deserialized due to oleaut32 VarDecRound being a semi-stub)

http://bugs.winehq.org/show_bug.cgi?id=30485

[e-mail] changed:

What    |Removed                     |Added
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                 CC|                            |[e-mail]

--- Comment #7 from [e-mail] 2012-09-28 07:31:35 CDT ---
Used to step on that bug too. I've needed a fast fix, so wrote the
implementation myself.
Here is the realisation for that function, that worked for me:

HRESULT WINAPI VarDecRound(const DECIMAL* pDecIn, int cDecimals, DECIMAL*
pDecOut)
{
  if (cDecimals < 0 || (DEC_SIGN(pDecIn) & ~DECIMAL_NEG) || DEC_SCALE(pDecIn) >
DEC_MAX_SCALE)
    return E_INVALIDARG;

if (cDecimals >= DEC_SCALE(pDecIn))
  {
    *pDecOut = *pDecIn; /* More precision than we have */
    return S_OK;
  }
  else
  {
    double dbResult;
    HRESULT hRet;

hRet = VarR8FromDec(pDecIn, &dbResult);
    if (SUCCEEDED(hRet))
    {
      dbResult = floor(dbResult * pow(10, cDecimals) + 0.5) / pow(10,
cDecimals);
      hRet = VarDecFromR8(dbResult, pDecOut);
      if (SUCCEEDED(hRet))
      {
        return S_OK;
      }
    }
  }

FIXME("semi-stub!\n");

return DISP_E_OVERFLOW;
}