How to set the point where context menu was invoked as the current keyboard cursor position in WinForms SyntaxEditor (EditControl)?

private void editControl1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
   if (Control.MouseButtons == MouseButtons.Right)
   {
      this.editControl1.CurrentPosition = this.editControl1.PointToVirtualPosition(this.editControl1.PointToClient(Control.MousePosition));
   }
}

Private Sub editControl1_MouseDown(sender As Object, e As System.Windows.Forms.MouseEventArgs) Handles editControl1.MouseDown
   If Control.MouseButtons = MouseButtons.Right Then
      Me.editControl1.CurrentPosition = Me.editControl1.PointToVirtualPosition(Me.editControl1.PointToClient(Control.MousePosition))
   End If
End Sub 'editControl1_MouseDown