DockState enumeration
The DockState enumeration is an integer showing the docking states of the window.
The DockState enumeration has the following constants of type unsigned short.
DOCK_NONE = 0
The window is floating.
DOCK_TOP = 1
The window is docked at the top of the main window.
DOCK_BOTTOM = 2
The window is docked at the bottom of the main window.
DOCK_LEFT = 3
The window is docked at the left of the main window.
DOCK_RIGHT = 4
The window is docked at the right of the main window.