# NSSplitViewItem class documentation

Generated at 2026-02-17 21:02:56 +0000
Software documentation for the NSSplitViewItem class
AppKit/NSSplitViewItem.h
NSCoding
Description forthcoming.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.
contentListWithViewController:
viewController
Description forthcoming.
sidebarWithViewController:
viewController
Description forthcoming.
splitViewItemWithViewController:
viewController
Description forthcoming.
allowsFullHeightLayout
Description forthcoming.
automaticMaximumThickness
Description forthcoming.
canCollapse
Description forthcoming.
collapseBehavior
Description forthcoming.
holdingPriority
Description forthcoming.
isSpringLoaded
Description forthcoming.
maximumThickness
Description forthcoming.
minimumThickness
Description forthcoming.
preferredThicknessFraction
Description forthcoming.
setAllowsFullHeightLayout:
flag
Description forthcoming.
setAutomaticMaximumThickness:
f
Description forthcoming.
setMaximumThickness:
f
Description forthcoming.
setMinimumThickness:
f
Description forthcoming.
setPreferredThicknessFraction:
f
Description forthcoming.
setSpringLoaded:
flag
Description forthcoming.
setTitlebarSeparatorStyle:
style
Description forthcoming.
setViewController:
vc
Description forthcoming.
titlebarSeparatorStyle
Description forthcoming.
viewController
Description forthcoming.