MdiTabDragOverEventHandler デリゲート

TabDragOver イベントを処理するためのデリゲート。

シンタックス

Visual Basic

'宣言
 
Public Delegate Sub MdiTabDragOverEventHandler( _
   ByVal sender As Object, _
   ByVal e As MdiTabDragOverEventArgs _
) 

C#

public delegate void MdiTabDragOverEventHandler( 
   object sender,
   MdiTabDragOverEventArgs e
)

パラメータ

sender

e

使用例

Visual Basic

Imports Infragistics.Win
Imports Infragistics.Win.UltraWinTabs
Imports Infragistics.Win.UltraWinTabbedMdi

Private Sub ultraTabbedMdiManager1_TabDragOver(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTabbedMdi.MdiTabDragOverEventArgs) Handles ultraTabbedMdiManager1.TabDragOver
    ' The 'TabDragOver' event is invoked during a drag operation
    ' as the mouse is repositioned. The 'DropAction' indicates
    ' the action that will be taken if the mouse is released
    ' at this point.
    '

    Select Case e.DropAction
        Case MdiTabDropAction.TabGroup
            ' if the tab came from another tab group
            ' is attempting to drag it over an edit group,
            ' then prevent the drop
            If Not e.TabGroup Is e.Tab.TabGroup AndAlso e.TabGroup.Key = "Edit" Then
                ' The 'AllowDrop' may be set to false to indicate
                ' that the specified point is not a valid drop location.
                e.AllowDrop = False

                ' The 'DragCursor' may be used to show a specific cursor 
                ' for the 'Point' being processed.
                e.DragCursor = Cursors.No
            End If
            Exit Sub
        Case MdiTabDropAction.NewHorizontalGroup
        Case MdiTabDropAction.NewVerticalGroup
            ' the point must be over a splitter bar
            ' or near the edge of the mdi client area
            Exit Sub
        Case MdiTabDropAction.ContextMenu
            ' prevent the display of a context menu if
            ' the mouse is released within the mdi client area
            e.AllowDrop = False
            Exit Sub
    End Select
End Sub

C#

using Infragistics.Win;
using Infragistics.Win.UltraWinTabs;
using Infragistics.Win.UltraWinTabbedMdi;

private void ultraTabbedMdiManager1_TabDragOver(object sender, Infragistics.Win.UltraWinTabbedMdi.MdiTabDragOverEventArgs e)
{
	// The 'TabDragOver' event is invoked during a drag operation
	// as the mouse is repositioned. The 'DropAction' indicates
	// the action that will be taken if the mouse is released
	// at this point.
	//

	switch(e.DropAction)
	{
		case MdiTabDropAction.TabGroup:
		{
			// if the tab came from another tab group
			// is attempting to drag it over an edit group,
			// then prevent the drop
			if (e.TabGroup != e.Tab.TabGroup && 
				e.TabGroup.Key == "Edit")
			{
				// The 'AllowDrop' may be set to false to indicate
				// that the specified point is not a valid drop location.
				e.AllowDrop = false;

				// The 'DragCursor' may be used to show a specific cursor 
				// for the 'Point' being processed.
				e.DragCursor = Cursors.No;
			}
			break;
		}
		case MdiTabDropAction.NewHorizontalGroup:
		case MdiTabDropAction.NewVerticalGroup:
			// the point must be over a splitter bar
			// or near the edge of the mdi client area
			break;
		case MdiTabDropAction.ContextMenu:
			// prevent the display of a context menu if
			// the mouse is released within the mdi client area
			e.AllowDrop = false;
			break;
	}
}