FdoIGeometryCapabilities * geometryCapabilities;

FdoInt32 numGeometryTypes = 0;

FdoGeometryType * geometryTypes;

FdoInt32 numGeometryComponnentTypes = 0;

FdoGeometryComponentType * geometryComponentTypes;

FdoInt32 dimensionalities = 0;

geometryCapabilities = connection->GetGeometryCapabilities();

geometryTypes = geometryCapabilities->

  GetGeometryTypes(numGeometryTypes);

// loop through geometryTypes

geometryComponentTypes = geometryCapabilities->

  GetGeometryComponentTypes(numGeometryComponentTypes);

// loop through geometryComponentTypes

dimensionalities = geometryCapabilities->GetDimensionalities();

// FdoDimensinality_XY is 0 and so is always
a given

if (dimensionalities & FdoDimensionality_Z) {

  // do whatever

}

if (dimensionalities & FdoDimensionality_M) {

  // do whatever

}