Selectors (Color/File/Font)

GtkColorButton — A button to launch a color selection dialog
GtkColorSelectionDialog
GtkColorSelection — A widget used to select a color
GtkHSV
GtkFileChooser — File chooser interface used by GtkFileChooserWidget and GtkFileChooserDialog
GtkFileChooserButton
GtkFileChooserDialog
GtkFileChooserWidget
GtkFileFilter — A filter for selecting a file subset
GtkFontButton
GtkFontSelection
GtkFontSelectionDialog