make source list style nsoutlineview programmatically

outlineview.m

NSScrollView* container = [[NSScrollView alloc] initWithFrame:CGRectMake(0, 0, 200, 100)];
container.hasVerticalScroller = YES;
container.hasHorizontalScroller = YES;
container.wantsLayer = YES;
container.identifier = [@(LOGVIEW_OFFSET + i) stringValue];

NSClipView* clipview = [[NSClipView alloc] init];
clipview.autoresizesSubviews = YES;
clipview.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;

NSOutlineView* outline = [[NSOutlineView alloc] init];
outline.selectionHighlightStyle = NSTableViewSelectionHighlightStyleSourceList;
outline.floatsGroupRows = NO;
outline.indentationPerLevel = 16.f;
outline.indentationMarkerFollowsCell = NO;
outline.wantsLayer = YES;
outline.layer.backgroundColor = [NSColor secondarySelectedControlColor].CGColor;

// outline code
NSTableColumn* col1 = [[NSTableColumn alloc] initWithIdentifier:@"col1"];
col1.editable = NO;
col1.minWidth = 300000.f;
col1.headerCell.stringValue = [NSString stringWithFormat:@"DUT%lu", dutIndex];
[outline addTableColumn:col1];
[outline setOutlineTableColumn:col1];

container.contentView = clipview;
clipview.documentView = outline;

There are 2 points:
1: the clipped view
2: the table column and outlinetablecolumn

thanks! not knowing of outlinetablecolumn drove me crazy

Very nice, thanks a lot!