Changing the disclosure triangle in an NSOutlineView

Apple, Cocoa, General

At WWDC I was asked how to remove the disclosure triangle in an NSOutlineView. Well, first things first. You can change it with this bit of code in your delegate:

- (void)outlineView:(NSOutlineView *)ov
  willDisplayOutlineCell:(NSButtonCell *)cell
  forTableColumn:(NSTableColumn *)tableColumn
  [cell setImage:[NSImage imageNamed:@“collapsedglyph.tiff”]];
  [cell setAlternateImage:[NSImage imageNamed:@“expandedglyph.tiff”]];

If you want to set it to nil, you will have to create an image that is empty.


Previous Post
rail unicycle riding at East Cliff Rd, Santa Cruz, CA (aka: 'the hook')
Next Post
Repost: How to find memory leaks in Cocoa apps with Object Alloc

Leave a Reply

Notify of

As an Amazon Associate I earn from qualifying purchases.

(c) 2008-2020 Corbin Dunn

Privacy Policy

Subscribe to RSS feeds for entries.

76 queries. 1.442 seconds.

Log in