FdoIGeometryCapabilities * geometryCapabilities;

GisInt32 numGeometryTypes = 0;

GisGeometryType * geometryTypes;

GisInt32 numGeometryComponnentTypes = 0;

GisGeometryComponentType * geometryComponentTypes;

GisInt32 dimensionalities = 0;

geometryCapabilities = connection->GetGeometryCapabilities();

geometryTypes = geometryCapabilities->

  GetGeometryTypes(numGeometryTypes);

// loop through geometryTypes

geometryComponentTypes = geometryCapabilities->

  GetGeometryComponentTypes(numGeometryComponentTypes);

// loop through geometryComponentTypes

dimensionalities = geometryCapabilities->GetDimensionalities();

// GisDimensinality_XY is 0 and so is always a given

if (dimensionalities & GisDimensionality_Z) {

  // do whatever

}

if (dimensionalities & GisDimensionality_M) {

  // do whatever

}