LastEnteredElement Property

Returns the last element that the mouse entered or null if the mouse is not over any elements.

Syntax

Visual Basic

'Declaration
 
Public ReadOnly Property LastEnteredElement As Infragistics.Win.UIElement

C#

public Infragistics.Win.UIElement LastEnteredElement {get;}

Example

The following code demonstrates how to use the DoubleClickSplitterBar to affect the layout of the docked panes.

For an overview of how to handle events in Visual Basic or Visual C#, see Event Handlers in Visual Basic and Visual C#. For specific information and code examples illustrating how to consume events in your application, see Consuming Events in the .NET Framework Developer's Guide.

Visual Basic

Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinDock

Private Sub ultraDockManager1_DoubleClickSplitterBar(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinDock.PanesEventArgs) Handles ultraDockManager1.DoubleClickSplitterBar

    ' This event will fire if you double click the splitter
    ' bar adjacent to a dock area pane or a splitter bar
    ' between two horizontally or vertically split panes
    '

    If (e.Panes.Length = 1 AndAlso TypeOf e.Panes(0) Is DockAreaPane) Then
        Dim dockArea As DockAreaPane = CType(e.Panes(0), DockAreaPane)

        ' Since this could happen while a drag of the splitter
        ' bar is pending, cancel the drag first
        If (Not Me.ultraDockManager1.LastEnteredElement Is Nothing) Then
            Me.ultraDockManager1.LastEnteredElement.ControlElement.TerminateCapture()
        End If

        Select Case dockArea.DockedLocation
            Case DockedLocation.DockedLeft, DockedLocation.DockedRight
                ' reset the width to a default width but
                ' keep the current height info
                dockArea.Size = New Size(100, dockArea.Size.Height)
            Case DockedLocation.DockedTop, DockedLocation.DockedBottom
                ' reset the height to a default width but
                ' keep the current width info
                dockArea.Size = New Size(dockArea.Size.Width, 100)
        End Select
    End If

End Sub

C#

using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.UltraWinDock;
using System.Diagnostics;

private void ultraDockManager1_DoubleClickSplitterBar(object sender, Infragistics.Win.UltraWinDock.PanesEventArgs e)
{

	// This event will fire if you double click the splitter
	// bar adjacent to a dock area pane or a splitter bar
	// between two horizontally or vertically split panes
	//

	if (e.Panes.Length == 1 && e.Panes[0] is DockAreaPane)
	{
		DockAreaPane dockArea = e.Panes[0] as DockAreaPane;

		// Since this could happen while a drag of the splitter
		// bar is pending, cancel the drag first
		if (this.ultraDockManager1.LastEnteredElement != null)
			this.ultraDockManager1.LastEnteredElement.ControlElement.TerminateCapture();

		switch (dockArea.DockedLocation)
		{
			case DockedLocation.DockedLeft:
			case DockedLocation.DockedRight:
				// Reset the width to a default width but
				// keep the current height info
				dockArea.Size = new Size(100, dockArea.Size.Height);
				break;
			case DockedLocation.DockedTop:
			case DockedLocation.DockedBottom:
				// Reset the height to a default width but
				// keep the current width info
				dockArea.Size = new Size(dockArea.Size.Width, 100);
				break;
		}
	}
}

Requirements

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