Here are the data structures with brief descriptions:

C_bounds
C_cmap_info_struct
C_color
C_color_box
C_histogram
C_image_info_struct
C_urt_stack
Calias_hdr
CApplication
Cbitmap_hdr
CBox
Ccolor_t
Ccuse
Cfb_getbox
Cfd_file
CImage
Cmove_t
CMyapp
Cpoint
Cpyramid
CRASF
CRLA_HEADER
CRLB_HEADER
CRLE
Crle_dispatch_tab
Crle_hdr
Crle_op
Cstr_table_entry
Cstr_table_node
Ctargafile
CView
Cwas_head
Cwas_op
CWINDOW_S
CXtndRsetup
Cyiq_t