预定义常量
PHP 手册

Checkbox Tree Flags

Checkbox Tree Flags
constant meaning
NEWT_CHECKBOXTREE_UNSELECTABLE  
NEWT_CHECKBOXTREE_HIDE_BOX  
NEWT_CHECKBOXTREE_COLLAPSED  
NEWT_CHECKBOXTREE_EXPANDED  
NEWT_CHECKBOXTREE_UNSELECTED  
NEWT_CHECKBOXTREE_SELECTED  

预定义常量
PHP 手册