Capture Mouse Click

[sna1maa14]

I have found code that will capture a mouse click in the form I use but what if I want to be able to capture any mouse click outside of the form like in another app or on the desktop? This way I can set the focus back to the form. Basicly i want to force them to click OK before going on to anything else. Here is a sample of what i have.

Private Sub Lt_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown
If e.Button = MouseButtons.Left Then
MessageBox.Show("left button clicked&quot
End If
End Sub

Thanks
Matt