バージョン

CancelablePanesEventArgs クラス

DockablePaneBase インスタンスの配列を渡すキャンセル可能なイベントに使用されるイベント パラメーター。
シンタックス
'宣言
 
Public Class CancelablePanesEventArgs 
   Inherits System.ComponentModel.CancelEventArgs
public class CancelablePanesEventArgs : System.ComponentModel.CancelEventArgs 
使用例
Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinDock

Private Sub ultraDockManager1_BeforeSplitterDrag(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinDock.CancelablePanesEventArgs) Handles ultraDockManager1.BeforeSplitterDrag

    ' BeforeSplitterDrag fires before the splitter bar adjacent to a
    ' DockAreaPane, between two panes in a horizontal or vertical
    ' split group, or adjacent to a control pane in a
    ' flyout window has been allowed to start a drag. Settings 
    ' Cancel to true will prevent the splitter from being allowed
    ' to drag.

    ' Do not allow the flyout window to be resized
    If (e.Panes.Length = 1) Then
        Dim pane As DockablePaneBase = e.Panes(0)

        ' if the pane that will be resized is the flyout
        ' pane, do not allow it
        If (pane.Manager.FlyoutPane Is pane) Then
            e.Cancel = True
        End If
    End If

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

private void ultraDockManager1_BeforeSplitterDrag(object sender, Infragistics.Win.UltraWinDock.CancelablePanesEventArgs e)
{

	// BeforeSplitterDrag fires before the splitter bar adjacent to a
	// DockAreaPane, between two panes in a horizontal or vertical
	// split group, or adjacent to a control pane in a
	// flyout window has been allowed to start a drag. Settings 
	// Cancel to true will prevent the splitter from being allowed
	// to drag.

	// Do not allow the flyout window to be resized
	if (e.Panes.Length == 1)
	{
		DockablePaneBase pane = e.Panes[0];

		// If the pane that will be resized is the flyout
		// pane, do not allow it
		if (pane.Manager.FlyoutPane == pane)
			e.Cancel = true;
	}

}
参照