AnnGetProtractorOptions example for Visual C++ 4.0
Long hProt;
float ArcRadius;
BOOL bAcute;
short nUnit, nPrecision;
m_Lead1.AnnGetProtractorOptions (hProt, &bAcute, &nUnit, &nPrecision, &ArcRadius);
m_Lead1.AnnSetProtractorOptions (hProt, !bAcute, 1 - nUnit + ANNANGLE_DEF_ABBR, NULL, (nPrecision + 1) % 5, ArcRadius, FALSE);
m_Lead1.AnnSetShowFlags (hProt, (m_Lead1.AnnGetShowFlags (hProt) + 1) % 4, FALSE);