RsrcGhdr() returns the header of a resource. The header is a
structure containing some information about resource :
typedef struct {
long nobs; /* number of OBJECT items */
long ntree; /* number of tree OBJECT */
long nted; /* number of TEDINFO items */
long ncib; /* number of CICON items */
long nib;
long nbb;
long nfstr; /* number of string items */
long nfimg; /* number of IMAGE items */
OBJECT *object; /* address of OBJECTS */
TEDINFO *tedinfo; /* address of TEDINFO */
ICONBLK *iconblk; /* address of ICONBLK */
BITBLK *bitblk; /* address of BITBLK */
CICON *cicon; /* address of CICON */
CICONBLK *ciconblk; /* address of CICONBLK */
char **frstr;
BITBLK **frimg;
OBJECT **trindex; /* address of tree OBJECTS */
} rscHDR;