you need to handle the MouseClick event:
vb.net Code:
Public Class BS
Private Sub BS_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.StartPosition = FormStartPosition.CenterScreen
Me.FormBorderStyle = Windows.Forms.FormBorderStyle.None
Me.WindowState = FormWindowState.Maximized
Me.BackColor = Color.Black
System.Windows.Forms.Cursor.Hide()
End Sub
Private Sub BS_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseClick
If e.Button = Windows.Forms.MouseButtons.Left Then
Application.Exit()
End If
End Sub
End Class