def get_cols_drag_value(self, cols):

        values = []
        for col in cols:
            model, real_col = self._resolve_column_index(col)
            values.append(model.get_cols_drag_value([real_col]))

        return values
Return the value to use when the specified columns are dragged or
dataset/ETHPy150Open enthought/pyface/pyface/ui/wx/grid/composite_grid_model.py/CompositeGridModel.get_cols_drag_value