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Treeview winform
Treeview winform





treeview winform

Specifies whether a semitransparent image of the selected node is drawn besides the cursor during the drag and drop operation. Gets or sets a value which indicates whether cue image should be drawn at a distance below the cursor during the drag drop operation. Value which indicates if the selected node must draw a dotted rectangle when it loses focus. The semi-transparent image that is drawn, can be hidden or shown using the ShowDragNodeCue property. The semi-transparent image which is drawn besides the cursor, during the drag and drop operation, can be displayed at a distance from the mouse cursor, by enabling the KeepDragCapturePoint property.

treeview winform

This feature is enabled by setting the KeepDottedSelection property of the TreeViewAdv to true. While performing a drag and drop operation, when a node is selected and dragged, the node will be drawn with a dotted rectangle, when it loses focus. The below image indicates dragging of “Brazil” node. Current = MyNoDropCursor End If End If End Sub Checked ) Then MyNormalCursor = New Cursor ( "3dwarro.cur" ) MyNoDropCursor = New Cursor ( "3dwno.cur" ) ' Set the custom cursor based upon the effect. GiveFeedback ' Use custom cursors if the check box is checked. CheckBox Private MyNoDropCursor As Cursor Private MyNormalCursor As Cursor Private Sub treeViewAdv_GiveFeedback ( ByVal sender As Object, ByVal e As GiveFeedbackEventArgs ) Handles ListDragSource. Cancel End If End Sub Public Event GiveFeedback As GiveFeedbackEventHandler Friend WithEvents UseCustomCursorsCheck As System. Quer圜ontinueDrag ' Cancel dragging when Escape was pressed. Quer圜ontinueDragEventArgs ) Handles treeViewAdv1. ClearHighlightNode () End Sub Private Sub treeViewAdv_Quer圜ontinueDrag ( ByVal sender As Object, ByVal e As System. DragLeave ' Let the highlight tracker keep track of the current highlight node. Text = "None" End Sub Private Sub treeViewAdv_DragLeave ( ByVal sender As Object, ByVal e As System. SelectedNode = sourceNode End Sub Private Sub treeViewAdv_DragEnter ( ByVal sender As Object, ByVal e As DragEventArgs ) Handles ListDragTarget. Y )) Dim destinationNode As TreeNodeAdv = Me. GetData ( GetType ( TreeNodeAdv )), TreeNodeAdv ) Dim pt As Point = Me. Dim sourceNode As TreeNodeAdv = CType ( e. DragEventArgs ) Dim treeView As TreeViewAdv = CType ( IIf ( TypeOf sender Is TreeViewAdv, sender, Nothing ), TreeViewAdv ) ' Get the destination and source node. Text ) End Sub Private Sub treeViewAdv_DragDrop ( ByVal sender As Object, ByVal e As System. currentSourceNode = sourceNode droppable = True Else droppable = False End If If droppable Then ' If Moving is allowed: e. GetData ( GetType ( TreeNodeAdv )), TreeNodeAdv ) Me. GetNodeAtPoint ( ptInTree ) Dim sourceNode As TreeNodeAdv = CType ( e. GetDataPresent ( GetType ( TreeNodeAdv )) Then ' Get the destination and source node. currentSourceNode = Nothing ' Looking for a single tree node. DragEventArgs ) ' Determine drag effects Dim droppable As Boolean = True Dim destinationNode As TreeNodeAdv = Nothing Dim treeView As TreeViewAdv = CType ( IIf ( TypeOf sender Is TreeViewAdv, sender, Nothing ), TreeViewAdv ) Dim ptInTree As Point = treeView. Private currentSourceNode As TreeNodeAdv Private Sub treeViewAdv_DragOver ( ByVal sender As Object, ByVal e As System. Move ) End Sub ' Helps keep track of the node that is being dragged. Dim node As TreeNodeAdv = nodes ( 0 ) Dim result As DragDropEffects = treeViewAdv. Item, Nothing ), TreeNodeAdv )() ' Let us get only the first selected node. Dim nodes As TreeNodeAdv () = CType ( IIf ( TypeOf e. ItemDragEventArgs ) Dim treeViewAdv As TreeViewAdv = CType ( IIf ( TypeOf sender Is TreeViewAdv, sender, Nothing ), TreeViewAdv ) ' The TreeViewAdv always provides an array of selected nodes.

treeview winform

Private Sub treeViewAdv_ItemDrag ( ByVal sender As Object, ByVal e As System.

treeview winform

Private void treeViewAdv_ItemDrag ( object sender, System.







Treeview winform