- c -
- CALENDAR_NO_MONTH_CHANGE : Gtk
- CALENDAR_SHOW_DAY_NAMES : Gtk
- CALENDAR_SHOW_DETAILS : Gtk
- CALENDAR_SHOW_HEADING : Gtk
- CALENDAR_SHOW_WEEK_NUMBERS : Gtk
- CELL_RENDERER_ACCEL_MODE_GTK : Gtk
- CELL_RENDERER_ACCEL_MODE_OTHER : Gtk
- CELL_RENDERER_EXPANDABLE : Gtk
- CELL_RENDERER_EXPANDED : Gtk
- CELL_RENDERER_FOCUSED : Gtk
- CELL_RENDERER_INSENSITIVE : Gtk
- CELL_RENDERER_MODE_ACTIVATABLE : Gtk
- CELL_RENDERER_MODE_EDITABLE : Gtk
- CELL_RENDERER_MODE_INERT : Gtk
- CELL_RENDERER_PRELIT : Gtk
- CELL_RENDERER_SELECTED : Gtk
- CELL_RENDERER_SORTED : Gtk
- CENTER_PTR : Gdk
- CIRCLE : Gdk
- CLIENT_EVENT : Gdk
- CLOCK : Gdk
- COFFEE_MUG : Gdk
- COLORSPACE_RGB : Gdk
- CONFIGURE : Gdk
- CONTROL_MASK : Gdk
- CORNER_BOTTOM_LEFT : Gtk
- CORNER_BOTTOM_RIGHT : Gtk
- CORNER_TOP_LEFT : Gtk
- CORNER_TOP_RIGHT : Gtk
- CROSS : Gdk
- CROSS_REVERSE : Gdk
- CROSSHAIR : Gdk
- CSS_SECTION_BINDING_SET : Gtk
- CSS_SECTION_COLOR_DEFINITION : Gtk
- CSS_SECTION_DECLARATION : Gtk
- CSS_SECTION_DOCUMENT : Gtk
- CSS_SECTION_IMPORT : Gtk
- CSS_SECTION_KEYFRAMES : Gtk
- CSS_SECTION_RULESET : Gtk
- CSS_SECTION_SELECTOR : Gtk
- CSS_SECTION_VALUE : Gtk
- CURSOR_IS_PIXMAP : Gdk