GeckoWebBrowser1.Navigate("javascript:window.print()")'imprimir
GeckoWebBrowser1.GoBack() ' atrás
GeckoWebBrowser1.GoForward() ' adelante
GeckoWebBrowser1.Reload() ' actualizar
GeckoWebBrowser1.Stop() ' Parar de cargar la página
GeckoWebBrowser1.ShowPageProperties() ' propiedades de la web
GeckoWebBrowser1.Url.AbsoluteUri ' lo mismo que en el navegador normal WebBrowser1.Url.ToString()

Public Class Form1
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Skybound.Gecko.Xpcom.Initialize()
        GeckoWebBrowser1.Navigate("http://www.google.com")
    End Sub
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        GeckoWebBrowser1.GoBack()
    End Sub
 
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        GeckoWebBrowser1.GoForward()
    End Sub
 
    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        GeckoWebBrowser1.Reload()
    End Sub
 
    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        GeckoWebBrowser1.Navigate(TextBox1.Text)
    End Sub
 
    Private Sub GeckoWebBrowser1_DocumentCompleted(ByVal sender As Object, ByVal e As System.EventArgs)
        ToolStripProgressBar1.Visible = False
        Button5.Enabled = False
        Me.Text = GeckoWebBrowser1.DocumentTitle
        If GeckoWebBrowser1.CanGoBack = False Then 'si puede ir a tras entonces
            Button1.Enabled = False ' no se puede pulsar
        Else
            Button5.Enabled = True
        End If
        If GeckoWebBrowser1.CanGoForward = False Then
            Button2.Enabled = False
        Else
            Button2.Enabled = True
        End If
    End Sub
 
    Private Sub GeckoWebBrowser1_Navigating(ByVal sender As System.Object, ByVal e As Skybound.Gecko.GeckoNavigatingEventArgs)
        ToolStripProgressBar1.Visible = True
        Button2.Enabled = True
    End Sub
 
    Private Sub GeckoWebBrowser1_ProgressChanged(ByVal sender As System.Object, ByVal e As Skybound.Gecko.GeckoProgressEventArgs)
        ToolStripProgressBar1.Maximum = e.MaximumProgress ' barra de progreso
        ToolStripProgressBar1.Value = e.CurrentProgress
    End Sub
 
    Private Sub GeckoWebBrowser1_Navigated(ByVal sender As System.Object, ByVal e As Skybound.Gecko.GeckoNavigatedEventArgs)
        TextBox1.Text = GeckoWebBrowser1.Url.ToString
    End Sub
 
    Private Sub GeckoWebBrowser1_DocumentTitleChanged(ByVal sender As Object, ByVal e As System.EventArgs)
        Me.Text += GeckoWebBrowser1.DocumentTitle ' texto de la ventana más el de la web
    End Sub
 
    Private Sub MenuStrip1_ItemClicked(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ToolStripItemClickedEventArgs) Handles MenuStrip1.ItemClicked
 
    End Sub
 
    Private Sub ToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        GeckoWebBrowser1.Navigate(TextBox1.Text)
    End Sub
 
    Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
        GeckoWebBrowser1.Stop()
    End Sub
 
    Private Sub PropiedadesToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PropiedadesToolStripMenuItem.Click
        GeckoWebBrowser1.ShowPageProperties()
    End Sub
 
    Private Sub ImprimirToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ImprimirToolStripMenuItem.Click
        GeckoWebBrowser1.Navigate("javascript:window.print()")
    End Sub
End Class