function call



Hey!
 
 
 
GdkWindow        *win;
GdkDevice          *dev;
 
 
int main( int argc, char *argv[])
{
 GtkWidget        *window;
...
  function_call( ???, NULL);
  gtk_main();
   return 0;
}
 
void   function(???, gpointer data)
{
 g_assert ( data == 0);
 win = GTK_WIDGET (???)-> window;
 dev = gdk_device_get_core_pointer();
 ...
} 
 
Ok, my questions:
On the places who i have set ??? i don't now what i must write.
Before i had a button and so i must write  function_call(G_OBJECT(button), NULL);  win = GTK_WIDGET(button)->window;
But now?
Or do you have a better idea how i can call the function on programm start?
 
\\Robert   ( sry, bad english ;) )


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