Infragistics2.Win.UltraWinTree.v8.1
HotTracking Property
See Also  Example
Infragistics.Win.UltraWinTree Namespace > Override Class : HotTracking Property

Gets/sets a value indicating whether a node takes on the HotTrackingNodeAppearance as the mouse pointer passes over it.

Syntax

Visual Basic (Declaration) 
Public Property HotTracking As DefaultableBoolean
C# 
public DefaultableBoolean HotTracking {get; set;}

Example

The following sample code illustrates how to specify the appearance of nodes.

Visual BasicCopy Code
    Imports Infragistics.Win
    Imports Infragistics.Win.UltraWinTree

    Private Sub button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button3.Click

        ' Note: the Override objects are exposed as properties off
        ' the tree, the node and the nodes collection as well as
        ' items in the NodeLevelOverrides collection. This allows
        ' default settings to be specified for the tree, a node,
        ' a node's children or for a level in the tree.

        ' Get the tree's Override property so we can
        ' set the default for all nodes.
        With Me.ultraTree1.Override

            ' Turn hot tracking on
            .HotTracking = DefaultableBoolean.True

            ' Set the borderstyle to solid but the border color
            ' to trasnparent so the borders don't show by default.
            .BorderStyleNode = UIElementBorderStyle.Solid
            .NodeAppearance.BorderColor = Color.Transparent

            ' Set default border colors for active, expanded,
            ' hot tracked and selected nodes.
            .ActiveNodeAppearance.BorderColor = Color.Red
            .ExpandedNodeAppearance.BorderColor = Color.Magenta
            .HotTrackingNodeAppearance.BorderColor = Color.Blue
            .SelectedNodeAppearance.BorderColor = Color.Black

        End With

        ' Set the default for nodes that are at level 2
        ' (i.e. grandchild nodes of root modes).
        ' This overrides the default setting above.
        Me.ultraTree1.NodeLevelOverrides(2).ActiveNodeAppearance.BorderColor = Color.Violet

        ' Set the default for nodes at the root level.
        ' This overrides the default settings above.
        Me.ultraTree1.Nodes.Override.ActiveNodeAppearance.BorderColor = Color.Aqua

        Dim node As UltraTreeNode

        ' Get a specific node by its key value.
        ' Note: this will return the node that has that key
        ' from anywhere in the tree structure since keys are
        ' unique across the entire tree.
        node = Me.ultraTree1.GetNodeByKey("child node 1")

        ' Set the property for that specific node only.
        ' This overrides any default settings above.
        node.Override.ActiveNodeAppearance.BorderColor = Color.Cyan

        ' Set the property for that specific node's child nodes
        node.Nodes.Override.ActiveNodeAppearance.BorderColor = Color.Beige

    End Sub
C#Copy Code
       using Infragistics.Win;
       using Infragistics.Win.UltraWinTree;


       private void button3_Click(object sender, System.EventArgs e)
       {

           // Note: the Override objects are exposed as properties off
           // the tree, the node and the nodes collection as well as
           // items in the NodeLevelOverrides collection. This allows
           // default settings to be specified for the tree, a node,
           // a node's children or for a level in the tree.

           Infragistics.Win.UltraWinTree.Override ovr;

           // Get the tree's Override property so we can
           // set the default for all nodes.
           ovr = this.ultraTree1.Override;

           // Turn hot tracking on
           ovr.HotTracking = DefaultableBoolean.True;

           // Set the borderstyle to solid but the border color
           // to trasnparent so the borders don't show by default.
           ovr.BorderStyleNode = UIElementBorderStyle.Solid;
           ovr.NodeAppearance.BorderColor = Color.Transparent;

           // Set default border colors for active, expanded,
           // hot tracked and selected nodes.
           ovr.ActiveNodeAppearance.BorderColor = Color.Red;
           ovr.ExpandedNodeAppearance.BorderColor = Color.Magenta;
           ovr.HotTrackingNodeAppearance.BorderColor = Color.Blue;
           ovr.SelectedNodeAppearance.BorderColor = Color.Black;
       
           // Set the default for nodes that are at level 2
           // (i.e. grandchild nodes of root modes).
           // This overrides the default setting above.
           this.ultraTree1.NodeLevelOverrides[2].ActiveNodeAppearance.BorderColor = Color.Violet;

           // Set the default for nodes at the root level.
           // This overrides the default settings above.
           this.ultraTree1.Nodes.Override.ActiveNodeAppearance.BorderColor = Color.Aqua;

           // Get a specific node by its key value.
           // Note: this will return the node that has that key
           // from anywhere in the tree structure since keys are
           // unique across the entire tree.
           UltraTreeNode node = this.ultraTree1.GetNodeByKey("child node 1");

           // Set the property for that specific node only.
           // This overrides any default settings above.
           node.Override.ActiveNodeAppearance.BorderColor = Color.Cyan;

           // Set the property for that specific node's child nodes
           node.Nodes.Override.ActiveNodeAppearance.BorderColor = Color.Beige;
       
       }

See Also