'Declaration Public Enum DockChangeType Inherits System.Enum
public enum DockChangeType : System.Enum
Member | Description |
---|---|
DisplayAsMdiChildren | A pane is displayed as an MDI child form. This is only available when the host Form is an MDI container. |
FloatingWindowReposition | A floating dock area is being repositioned. |
NewDockArea | A new dock area will be created |
NewGroup | A new group to parent the pane being dragged and the target pane will be created |
NewSiblingPane | The pane is being docked as a sibling of one or more panes. |
SiblingPaneReposition | A child pane is being repositioned within its parent pane. |
Imports Infragistics.Shared Imports Infragistics.Win Imports Infragistics.Win.UltraWinDock Private Sub ultraDockManager1_BeforeDockChange(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinDock.BeforeDockChangeEventArgs) Handles ultraDockManager1.BeforeDockChange ' The BeforeDockChange is invoked as a pane is dragged ' to allow you to determine whether a drop location is ' considered a valid drop point. Setting Cancel to ' true will indicate to the dock manager that the drop ' location is not valid. When this is done, the cursor ' is changed to the no cursor to indicate this to the user. ' If the mouse is released at that point, the drag is cancelled. ' ' Only allow sliding group items to be repositioned ' within the parent If (e.ChangeType <> DockChangeType.SiblingPaneReposition AndAlso _ Not e.Pane.Parent Is Nothing AndAlso _ e.Pane.Parent.ChildPaneStyle = ChildPaneStyle.SlidingGroup) Then e.Cancel = True End If ' Any floating combination is allowed so just ' exit If (e.NewDockedLocation = DockedLocation.Floating) Then Return End If ' Do not allow panes to be grouped together If (e.ChangeType = DockChangeType.NewGroup OrElse _ e.ChangeType = DockChangeType.NewSiblingPane) Then e.Cancel = True End If ' Do not allow any new docking areas to be created ' on the form - only floating docking areas If (e.ChangeType = DockChangeType.NewDockArea AndAlso _ e.NewDockedLocation <> DockedLocation.Floating) Then e.Cancel = True End If End Sub
using Infragistics.Shared; using Infragistics.Win; using Infragistics.Win.UltraWinDock; using System.Diagnostics; private void ultraDockManager1_BeforeDockChange(object sender, Infragistics.Win.UltraWinDock.BeforeDockChangeEventArgs e) { // The BeforeDockChange is invoked as a pane is dragged // to allow you to determine whether a drop location is // considered a valid drop point. Setting Cancel to // true will indicate to the dock manager that the drop // location is not valid. When this is done, the cursor // is changed to the no cursor to indicate this to the user. // If the mouse is released at that point, the drag is cancelled. // // Only allow sliding group items to be repositioned // within the parent if (e.ChangeType != DockChangeType.SiblingPaneReposition && e.Pane.Parent != null && e.Pane.Parent.ChildPaneStyle == ChildPaneStyle.SlidingGroup) e.Cancel = true; // Any floating combination is allowed so just // exit if (e.NewDockedLocation == DockedLocation.Floating) return; // Do not allow panes to be grouped together if (e.ChangeType == DockChangeType.NewGroup || e.ChangeType == DockChangeType.NewSiblingPane) e.Cancel = true; // Do not allow any new docking areas to be created // on the form - only floating docking areas if (e.ChangeType == DockChangeType.NewDockArea && e.NewDockedLocation != DockedLocation.Floating) e.Cancel = true; }
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2