GroupFromPoint(Point) メソッド

シンタックス

Visual Basic

'宣言
 
Public Overloads Function GroupFromPoint( _
   ByVal point As Point _
) As UltraListViewGroup

C#

public UltraListViewGroup GroupFromPoint( 
   Point point
)

パラメータ

point

使用例

Visual Basic

Imports Infragistics.Win
Imports Infragistics.Win.UltraWinListView

    Private Sub ultraListView1_MouseDown(ByVal sender As System.Object, ByVal e As MouseEventArgs) Handles ultraListView1.MouseDown

        Dim listView As UltraListView = CType(sender, UltraListView)

        '	Remove all context menu items
        Me.contextMenu1.MenuItems.Clear()

        '	Add context menu items for group, item, sub-item
        Dim groupMenuItem As IGMenuItem = New IGMenuItem("Group", New EventHandler(AddressOf OnMenuItemClick))
        Dim itemMenuItem As IGMenuItem = New IGMenuItem("Item", New EventHandler(AddressOf OnMenuItemClick))
        Dim subItemMenuItem As IGMenuItem = New IGMenuItem("SubItem", New EventHandler(AddressOf OnMenuItemClick))

        Me.contextMenu1.MenuItems.Add(groupMenuItem)
        Me.contextMenu1.MenuItems.Add(itemMenuItem)
        Me.contextMenu1.MenuItems.Add(subItemMenuItem)

        '	Hit test for the group, item, or sub-item at the cursor position
        Dim groupAtPoint As UltraListViewGroup = listView.GroupFromPoint(e.X, e.Y)
        Dim itemAtPoint As UltraListViewItem = listView.ItemFromPoint(e.X, e.Y, True)
        Dim subItemAtPoint As UltraListViewSubItem = listView.SubItemFromPoint(e.X, e.Y)

        '  Assign a reference to the group, item or sub-item to the menu item's Tag
        groupMenuItem.Tag = groupAtPoint
        itemMenuItem.Tag = itemAtPoint
        subItemMenuItem.Tag = subItemAtPoint

        '	Enable the appropriate context menu items
        groupMenuItem.Enabled = Not groupAtPoint Is Nothing
        itemMenuItem.Enabled = Not itemAtPoint Is Nothing
        subItemMenuItem.Enabled = Not subItemAtPoint Is Nothing

        If listView.ContextMenu Is Nothing Then listView.ContextMenu = Me.contextMenu1

    End Sub

    Private Sub OnMenuItemClick(ByVal sender As Object, ByVal e As EventArgs)
        Dim menuItem As IGMenuItem = CType(sender, IGMenuItem)

        If menuItem.Tag.GetType() Is GetType(UltraListViewItem) Then

            '	Activate and select the UltraListViewItem
            Dim item As UltraListViewItem = CType(menuItem.Tag, UltraListViewItem)
            item.Activate()
            item.Control.PerformAction(UltraListViewAction.SelectItem, False, False)
        End If

    End Sub

C#

using Infragistics.Win;
using Infragistics.Win.UltraWinListView;
using System.Diagnostics;

		private void ultraListView1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
		{
			UltraListView listView = sender as UltraListView;

			//	Remove all context menu items
			this.contextMenu1.MenuItems.Clear();

			//	Add context menu items for group, item, sub-item
			IGMenuItem groupMenuItem = new IGMenuItem( "Group", new EventHandler(this.OnMenuItemClick) );
			IGMenuItem itemMenuItem = new IGMenuItem( "Item", new EventHandler(this.OnMenuItemClick) );
			IGMenuItem subItemMenuItem = new IGMenuItem( "SubItem", new EventHandler(this.OnMenuItemClick) );

			this.contextMenu1.MenuItems.Add( groupMenuItem );
			this.contextMenu1.MenuItems.Add( itemMenuItem );
			this.contextMenu1.MenuItems.Add( subItemMenuItem );

			//	Hit test for the group, item, or sub-item at the cursor position
			UltraListViewGroup groupAtPoint = listView.GroupFromPoint( e.X, e.Y );
			UltraListViewItem itemAtPoint = listView.ItemFromPoint( e.X, e.Y, true );
			UltraListViewSubItem subItemAtPoint = listView.SubItemFromPoint( e.X, e.Y );

			// Assign a reference to the group, item or sub-item to the menu item's Tag
			groupMenuItem.Tag = groupAtPoint;
			itemMenuItem.Tag = itemAtPoint;
			subItemMenuItem.Tag = subItemAtPoint;

			//	Enable the appropriate context menu items
			groupMenuItem.Enabled = groupAtPoint != null;
			itemMenuItem.Enabled = itemAtPoint != null;
			subItemMenuItem.Enabled = subItemAtPoint != null;

			if ( listView.ContextMenu == null )
				listView.ContextMenu = this.contextMenu1;
		}

		private void OnMenuItemClick( object sender, EventArgs e )
		{
			IGMenuItem menuItem = sender as IGMenuItem;

			if ( menuItem.Tag is UltraListViewItem )
			{
				//	Activate and select the UltraListViewItem
				UltraListViewItem item = menuItem.Tag as UltraListViewItem;
				item.Activate();
				item.Control.PerformAction( UltraListViewAction.SelectItem, false, false );
			}
		}