panel_is_split

Check if a panel is an internal split panel

b32
panel_is_split(Application_Links* app,
               Panel_ID panel_id);

app

the standard custom layer context pointer

panel_id

the id of the panel to query

non-zero if the panel exists and is an internal panel in the panel layout tree

The panel layout tree is a binary tree with internal panels having exactly two children and a split rule, and leaf panels having an associated view.