Does NSTableHeaderView add a row?

Question

For my first Mac application, I am trying to create a simple window with a table view. I have included the headers, but adds an annoying line on top of my NSTableHeaderView :

I cannot find a property to remove it. I know that it can be deleted because the Finder does not have it:

When I turn off the Headers, there is no border there. It should also be noted that NSTableView is inside NSSplitView . Any ideas?

Answer 1

The problem exists, because both the window frame and the scroll view in the form of a table have a border of 1px. Depending on your layout, you can either set borderStyle to an NSScrollView , which NSTableView your NSTableView in an NSNoBorder (note that this will remove the 1px border from all sides of the scroll). Or you can move the scroll view by 1px.

Answer 2

Another solution:

• Subclass NSTableHeaderView
• Override -drawRect: to draw a 1pt white line horizontally at the top to match the background color of the table title.
• Create an instance of the custom header using -initWithFrame: passing in the existing headerView frame.
• Give the custom header a view of the headerView table.

Implementation of -drawRect: ::

 - (void)drawRect:(NSRect)dirtyRect { // Allow the table header view to draw itself [super drawRect:dirtyRect]; // Draw a 1pt white line across the width of the header view [[NSColor whiteColor] setFill]; NSRectFill(NSMakeRect(0.0f, 0.0f, self.bounds.size.width, 1.0)); }