constants AllowSplitViewEnum
The AllowSplitViewEnum type specifies how many vertically split-panels the control support. The AllowSplitView property specifies whether the user can split the control into multiple-views. The AllowSplitViewEnum type supports the following values:

NameValueDescription
exNoSplitView0 No vertically split-view is allowed.
exAllowOneSplitView1 One additional vertically split-panel is allowed.
exAllowTwoSplitView2 Two additional vertically split-panel are allowed.
exSplitDisableEnsureVisiblePath256 Indicates that path of the view being resized always fits the control's client area. For instance, once the user resizes the view, you want the selected files to be always visible. The exSplitDisableEnsureVisiblePath flag can be combined with any other values.