NSButtonCell in NSTableView problem

[Andreas Höschler]

Hi all,

I am pulling my hair out. In a preferences panel I am building a 
tableView manually with three columns, one tableColumn with a button 
cell:

        tableColumn  = [[NSTableColumn alloc] initWithIdentifier:@"active"];

              NSButtonCell *buttonCell = [[GSButtonCell alloc] 
initTextCell:@""];
              [buttonCell setButtonType:NSSwitchButton];
              [buttonCell setImagePosition:NSImageOnly];
              [buttonCell setSelectable:NO];
              [tableColumn setDataCell:buttonCell];
              [buttonCell release];

              [(NSCell *)[tableColumn dataCell] 
setAlignment:NSCenterTextAlignment];

      [tableView addTableColumn:tableColumn];

   [tableView setDataSource:self];
   [tableView setDelegate:self];
   [[tableView tableColumnWithIdentifier:@"active"] setEditable:YES];
   [[[tableView tableColumnWithIdentifier:@"active"] dataCell] 
setEditable:YES];
   [[[tableView tableColumnWithIdentifier:@"active"] dataCell] 
setSelectable:YES];

When I click on the switch I expect

- (void)tableView:(NSTableView *)tableView setObjectValue:(id)object 
forTableColumn:(NSTableColumn *)tableColumn row:(int)row;

to be called but that is not the case. If I doubleclick into one of the 
NSTextFieldCells and end editing then the method is called!? What am I 
missing. This neither works on GNustep nor on MacOSX so I must be 
missing something obvious but I don't see what. Any idea?

Thanks a lot,

  Andreas