gobject
 |  
 gtkobject
  +gtkwidget
  | +gtkmisc
  | | +gtklabel
  | | | `gtkaccellabel
  | | +gtkarrow
  | | `gtkimage
  | +gtkcontainer
  | | +gtkbin
  | | | +gtkalignment
  | | | +gtkframe
  | | | | `gtkaspectframe
  | | | +gtkbutton
  | | | | +gtktogglebutton
  | | | | | `gtkcheckbutton
  | | | | |   `gtkradiobutton
  | | | | `gtkoptionmenu
  | | | +gtkitem
  | | | | +gtkmenuitem
  | | | |   +gtkcheckmenuitem
  | | | |   | `gtkradiomenuitem
  | | | |   +gtkimagemenuitem
  | | | |   +gtkseparatormenuitem
  | | | |   `gtktearoffmenuitem
  | | | +gtkwindow
  | | | | +gtkdialog
  | | | | | +gtkcolorselectiondialog
  | | | | | +gtkfileselection
  | | | | | +gtkfontselectiondialog
  | | | | | +gtkinputdialog
  | | | | | `gtkmessagedialog
  | | | | `gtkplug
  | | | +gtkeventbox
  | | | +gtkhandlebox
  | | | +gtkscrolledwindow
  | | | `gtkviewport
  | | +gtkbox
  | | | +gtkbuttonbox
  | | | | +gtkhbuttonbox
  | | | | `gtkvbuttonbox
  | | | +gtkvbox
  | | | | +gtkcolorselection
  | | | | +gtkfontselection
  | | | | `gtkgammacurve
  | | | `gtkhbox
  | | |   +gtkcombo
  | | |   `gtkstatusbar
  | | +gtkfixed
  | | +gtkpaned
  | | | +gtkhpaned
  | | | `gtkvpaned
  | | +gtklayout
  | | +gtkmenushell
  | | | +gtkmenubar
  | | | `gtkmenu
  | | +gtknotebook
  | | +gtksocket
  | | +gtktable
  | | +gtktextview
  | | +gtktoolbar
  | | `gtktreeview
  | +gtkcalendar
  | +gtkdrawingarea
  | | `gtkcurve
  | +gtkeditable
  | | +gtkentry
  | |   `gtkspinbutton
  | +gtkruler
  | | +gtkhruler
  | | `gtkvruler
  | +gtkrange
  | | +gtkscale
  | | | +gtkhscale
  | | | `gtkvscale
  | | `gtkscrollbar
  | |   +gtkhscrollbar
  | |   `gtkvscrollbar
  | +gtkseparator
  | | +gtkhseparator
  | | `gtkvseparator
  | +gtkinvisible
  | +gtkpreview
  | `gtkprogressbar
  +gtkadjustment
  +gtkcellrenderer
  | +gtkcellrendererpixbuf
  | +gtkcellrenderertext
  | +gtkcellrenderertoggle
  +gtkitemfactory
  +gtktooltips
  `gtktreeviewcolumn