Functions not Related to Specific Images

Gimp — Main functions needed for building a GIMP plug-in. This header includes all other GIMP Library headers.
gimpenums — Enums and definitions.
gimpbuffer — Functions for manipulating cut buffers.
gimpcontext — Functions to manipulate a plug-in's context.
gimpgimprc — Interactions with settings from gimprc.
gimphelp — Loading help pages using gimp_help.
gimpmessage — Display a dialog box with a message.
gimpplugin — Functions useful for plugins, e.g. registration and progress indicators.
gimpproceduraldb — Functions for querying and changing procedural database (PDB) entries.
gimpprogress — Functions for embedding the progress bar into a plug-in's GUI.