Introduce me to NSTableView

[Christopher Culver]

I'm trying to implement two NSTableViews for my GSCharmap application. 
One, the actual character map itself, will be somewhat complex and I'll 
worry about that later. First I'm trying to do the category selection. 
It is a single-column table (is there any better way to do it?) listing 
all of the Unicode blocks (e.g. Greek Extended, Katakana, etc) so the 
user, by double-clicking on a category, can jump straight to that 
particular part of the character. So, the data source should be pretty 
easy, right?

NSArray *blocks;
blocks = [NSArray initWithObjects: @"Basic Latin", @"Latin-1 
Supplement",...nil]

So much for the NSArray. My problem lies with creating the data source 
class and initialising a table.

@implementation GSCharmapBlocks : NSObject
{
       NSArray *blocks;
}
- (int) numberOfRowsInTableView:(NSTableView *)aTableView
{
      return [blocks count];
}

- (id) tableView:(NSTableView *)aTableView objectValueForTableColumn:
(NSTableColumn *)aTableColumn row:(int)rowIndex
{
        return [blocks objectAtIndex:rowIndex];
}

This seems to be the stereotypical implementation for a NSTableView 
data source. Having create the data source, what steps must I take to 
initialise the table? So far, I have this:

hbox = AUTORELEASE ([GSHbox new]);
blocksTable = AUTORELEASE ([NSTableView new]);
blocksDataSource = [GSCharmapBlocks new];
[blocksTable setDataSource: blocksDataSource];
[blocksTable setRowHeight: 40];
[hbox addView: blocksTable];

This does not, however, result in a visible NSTableView in my 
application window. What more must I do? Must I manually add a column 
to the table view? If so, how?

NSTableView seems to be one of the more difficult GUI objects for 
Openstep newbies (in Cocoa forums I see a lot of puzzlement about it). 
It'd be really cool to have an NSTableView tutorial for GNUstep.

Christopher Culver