gtk/gtk.go
func (v *Image) SetFromFile(filename string) {
	cstr := C.CString(filename)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_image_set_from_file(v.native(), (*C.gchar)(cstr))
}
func (v *Image) SetFromFile(filename string) {
	cstr := C.CString(filename)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_image_set_from_file(v.native(), (*C.gchar)(cstr))
}
// SetFromFile() is a wrapper around gtk_image_set_from_file().