Understanding GTK signaling

["Midhun A" <midhunagni gmail com>]

Hi All,

    I am a newbie to Linux GUI. I want to know the exact process and
signaling that happens when you want to show a GTK widget. I have at
least come till gtk_widget_show -> g_signal_emit->
g_signal_emit_valist(). I am not able to understand what
g_signal_emit_valist() function does. What does it signal and how?

  Please help me understand this.

Thanks,
Midhun.