Golang gdk_screen_get_default Examples

Example #1

File: gtkcalls_unix.go Project: UIKit0/ui

func gtk_init() error {
	var err *C.GError = nil // redundant in Go, but let's explicitly assign it anyway

	// gtk_init_with_args() gives us error info (thanks chpe in irc.gimp.net/#gtk+)
	// don't worry about GTK+'s command-line arguments; they're also available as environment variables (thanks mclasen in irc.gimp.net/#gtk+)
	result := C.gtk_init_with_args(nil, nil, nil, nil, nil, &err)
	if result == C.FALSE {
		return fmt.Errorf("error actually initilaizing GTK+: %s", fromgstr(err.message))
	}

	// now apply our custom program-global styles
	provider := C.gtk_css_provider_new()
	if C.gtk_css_provider_load_from_data(provider, (*C.gchar)(unsafe.Pointer(&gtkStyles[0])), C.gssize(len(gtkStyles)), &err) == C.FALSE {
		return fmt.Errorf("error applying package ui's custom program-global styles to GTK+: %v", fromgstr(err.message))
	}
	// GDK (at least as far back as GTK+ 3.4, but officially documented as of 3.10) merges all screens into one big one, so we don't need to worry about multimonitor
	// thanks to baedert and mclasen in irc.gimp.net/#gtk+
	C.gtk_style_context_add_provider_for_screen(C.gdk_screen_get_default(),
		(*C.GtkStyleProvider)(unsafe.Pointer(provider)),
		C.GTK_STYLE_PROVIDER_PRIORITY_USER)

	return nil
}

Example #2

File: screen.go Project: yamnikov-oleg/gotk3

// ScreenGetDefault is a wrapper aroud gdk_screen_get_default().
func ScreenGetDefault() (*Screen, error) {
	return toScreen(C.gdk_screen_get_default())
}