在 Gtk 中實現此后效功能的最接近的小部件是什么 [英]What's the closest widget to implement this after-effects feature in Gtk
gtk_widget_destroy:斷言“GTK_IS_WIDGET(小部件)”失敗 [英]gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
Gtk-CRITICAL **:IA__gtk_widget_get_parent:斷言`GTK_IS_WIDGET(widget)'失敗 [英]Gtk-CRITICAL **: IA__gtk_widget_get_parent: assertion `GTK_IS_WIDGET (widget)' failed