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How to avoid showing context menu, if the user clicks on empty space on the treeViewAdv?

 

If the user clicks on the empty space on the treeViewAdv,the appearence of the context menu can be avoided by handling treeViewAdv1_MouseDown and treeViewAdv1_MouseUp Event handler.With the help of this,the user can know which node is being edited currently.Here the Selected node is set to RMouseDownNode.The RMouseDownNode property gets/sets the node on which the user did a right-mousedown

C#

private void treeViewAdv1_MouseDown(object sender, MouseEventArgs e)

{

this.treeViewAdv1.BeginUpdate();

if(this.treeViewAdv1.RMouseDownNode!=null)

if (e.Button == MouseButtons.Right && this.treeViewAdv1.RMouseDownNode.TextBounds.Contains(this.treeViewAdv1.LastMousePositionToClient()))

{

this.treeViewAdv1.SelectedNode = this.treeViewAdv1.RMouseDownNode;

}

}

private void treeViewAdv1_MouseUp(object sender, MouseEventArgs e)

{

this.treeViewAdv1.EndUpdate(true);

}

VB

Private Sub treeViewAdv1_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs)

Me.treeViewAdv1.BeginUpdate()

If Not Me.treeViewAdv1.RMouseDownNode Is Nothing Then

If e.Button = MouseButtons.Right AndAlso Me.treeViewAdv1.RMouseDownNode.TextBounds.Contains(Me.treeViewAdv1.LastMousePositionToClient()) Then

Me.treeViewAdv1.SelectedNode = Me.treeViewAdv1.RMouseDownNode

End If

End If

End Sub

Private Sub treeViewAdv1_MouseUp(ByVal sender As Object, ByVal e As MouseEventArgs)

Me.treeViewAdv1.EndUpdate(True)

End Sub

Article ID: Published Date: Last Revised Date: Platform: Control:
1354 04/30/2011 07/10/2014 WinForms TreeViewAdv
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