code: def clean_up(self):#, grid):
          
          if self.selected_col:
              col_label_value = self.grid.GetColLabelValue(self.selected_col)
              col_label_value = col_label_value.strip('\nEDIT ALL')
              self.grid.SetColLabelValue(self.selected_col, col_label_value)
              for row in range(self.grid.GetNumberRows()):
                  self.grid.SetCellBackgroundColour(row, self.selected_col, 'white')
          self.grid.ForceRefresh()
docs: de-select grid cols, refresh grid