NSTableHeaderCell
NSTableHeaderCell is a subclass of NSCell in Apple’s AppKit used to render the header cell for a column in an NSTableView. Each NSTableColumn has a headerCell, which by default is an NSTableHeaderCell, and this cell is responsible for drawing the column’s title and any accompanying image in the header row of the table.
The header cell draws the label that identifies the column and can include an image, if one
Customization is performed by configuring the column’s headerCell. Developers can set the header cell’s title or
In practice, header cells are commonly configured in code or Interface Builder by assigning a string or