Specifies the sides of the owning dialog on which docking is allowed. In order for a dockable tool bar control to be able to dock, both the tool bar control and the owning dialog must allow docking on the specified side(s). The supported docking positions are: none (tool bar control may only be floated), top only, bottom only, left only, right only, horizontal (top or bottom), vertical (left or right) or any side.

Applies to	Dialog (window, MDI Frame), dialog bar control, tool bar control.
Data Type	I4
Default Value	DL-ANY
Possible Values	DL-NONE / DL-LEFT / DL-TOP / DL-RIGHT / DL-BOTTOM / DL-VERT / DL-HORZ / DL-ANY