void gtk_init ( void )
Call this function before using any other GTK functions in your GUI applications. It will initialize everything needed to operate the toolkit.
If you are using
GtkApplication, you usually don’t have to call this
GApplication::startup handler does it for you. Though,
if you are using GApplication methods that will be invoked before
local_command_line, you may need to initialize stuff explicitly.
This function will terminate your program if it was unable to
initialize the windowing system for some reason. If you want
your program to fall back to a textual interface, call
signal (SIGPIPE, SIG_IGN) during initialization, to ignore
SIGPIPE signals, since these are almost never wanted in graphical
applications. If you do need to handle SIGPIPE for some reason, reset
the handler after gtk_init(), but notice that other libraries (e.g.
libdbus or gvfs) might do similar things.