response signal of a dialog (v1.2)

[Aaron Pendergrass <aaron nearest-exit org>]

Hey
I'm writing an app with color change dialogs and have been fighting with gtk 1.2 to use the same call back 
function for both the foreground and background colors.  I would like to make one connection like
gtk_signal_connect(GTK_OBJECT(colorSelectionDialog), "response", GTK_SIGNAL_FUNC(set_color), 
the_color_pointer_I_was_passed);

I know that in 2.0 the response signal has it's own datatype but can't find any documentation on it for 1.2 
(which I am effectively forced to use). 

Help?
thanks
Aaron