##### pygame documentation | Pygame Home || Help Contents || Reference Index Most useful stuff: Color | display | draw | event | font | image | key | locals | mixer | mouse | Rect | Surface | time | music | pygame Advanced stuff: cursors | joystick | mask | sprite | transform | BufferProxy | freetype | gfxdraw | midi | PixelArray | pixelcopy | sndarray | surfarray | math Other: camera | controller | examples | fastevent | scrap | tests | touch | version

One example is pg_RGBAFromObj where the implementation is defined in base.c, and also exported in base.c (and _pygame.h).

base.c has this exposing the pg_RGBAFromObj function to the c_api structure:

> c_api[12] = pg_RGBAFromObj;

Then in src_c/include/_pygame.h there is an

> #define pg_RGBAFromObj.

Also in _pygame.h, it needs to define the number of slots the base module uses. This is PYGAMEAPI_BASE_NUMSLOTS. So if you were adding another function, you need to increment this PYGAMEAPI_BASE_NUMSLOTS number.

Then to use the pg_RGBAFromObj in other files,

1. include the "pygame.h" file,

2. they have to make sure base is imported with:

   > import_pygame_base();

Examples that use pg_RGBAFromObj are: _freetype.c, color.c, gfxdraw.c, and surface.c.

Edit on GitHub