With just StopChunk(), PropChunk(), and ParseIFF(), you can write a viable
ILBM display program.  Since IFFParse knows all about IFF structure and
scoping, such a display program would have the added ability to parse
complex FORMs, LISTs, and CATs and attempt to find imagery buried within.

Such an ILBM reader might appear as follows:


iff = AllocIFF();
iff->iff_Stream = Open ("shuttle dog", MODE_OLDFILE);
InitIFFasDOS (iff);
OpenIFF (iff, IFFF_READ);

PropChunk (iff, ID_ILBM, ID_BMHD);
PropChunk (iff, ID_ILBM, ID_CMAP);
PropChunk (iff, ID_ILBM, ID_CAMG);
StopChunk (iff, ID_ILBM, ID_BODY);
ParseIFF (iff, IFFPARSE_SCAN);


if (bmhdprop = FindProp (iff, ID_ILBM, ID_BMHD))
    configurescreen (bmhdprop);
else
    bye ("No BMHD, no picture.");


if (cmapprop = FindProp (iff, ID_ILBM, ID_CMAP))
    setcolors (cmapprop);
else
    usedefaultcolors ();


if (camgprop = FindProp (iff, ID_ILBM, ID_CAMG))
    setdisplaymodes (camgprop);


decodebody (iff);
showpicture ();
CloseIFF (iff);
Close (iff->iff_Stream);
FreeIFF (iff);


    Open the Library.
    -----------------
    Application programs must always open iffparse.library before using
    the functions outlined above.

    Only Example Programs Skip Error Checking.
    ------------------------------------------
    Error checking is not used in the example above for the sake of
    clarity.  A real application should always check for errors.