Returns the Distance, as a percentage of the marker width, between the data series in a 3D chart. This is the property not only of this series but of all series of parent series group - this is projection of appropriate group property. And so this property is read-only. Use ParentSeriesGroup property for access to parent series group. Use get_ParentSeriesGroup()->get(set)_GapDepth() read/write property for change value. Read-only int32_t....epth() method Returns the distance, as a percentage of the marker...