Step one and Four are done on the object to which the signal belongs. Step three is usually done outside the object. The process of signals is complicated and it takes long to explain all the features ...

GObject是给GTK库的基础系统，GTK库现在的版本为4。 GTK提供Linux上的图形界面并且为GNOME桌面环境和许多程序所用。 参见GTK 4 ...