gtk.widget.Widget.setMarginEnd on the widgets contained in the row if you need this functionality. #GtkGrid does not support per-row spacing.
Table.setColSpacing
void setColSpacing(uint column, uint spacing)Alters the amount of space between a given table column and the following column.
Parameters
column | the column whose spacing should be changed. |
spacing | number of pixels that the spacing should take up. |
Deprecated
Use gtk.widget.Widget.setMarginStart and