The following functions are specific to RowColumn functionality, but reside in the GeoUtils implementation.
I don't know what this first function does, but it looks suspiciously like a GeoMatrix allocation function, specialized for RCKidGeometry.
_XmGetKidGeo
XmKidGeometry
_XmGetKidGeo(Widget wid, Widget instigator,
XtWidgetGeometry *request,
int uniform_border, Dimension border,
int uniform_width_margins,
int uniform_height_margins,
Widget help, int geo_type);
_XmRCGetKidGeoThere is an undocumented function, XmRCGetKidGeo(), that I believe is similar to _XmGeoMatrixGet(). In LESSTIF, I believe this is implemented as initialize_boxes() in RowColumn.c.
That function calls this next function, as well as _XmGeoLoadValues().
_XmGetCount_kids
int _XmGeoCount_kids(CompositeWidget c);
Anybody out there who knows that this function does?