The APPINFO block of a CASL pdb file.

/* 
User defined AppInfo block 
*/ 
#define dmRecNumCategories 16 
#define dmCategoryLength 16 
/* bit flag in status_word indicating DB changed by CASL conduit */ 
#define CASL_DB_SYNCED 1 
/* bit flag in status_word indicating there is an ODBC data_source_name for the DBFILE */ 
/* if this is set then the data source name follows casl_app_info */ 
#define CASL_DATA_SOURCE_NAME_PRESENT 2 
/* number of bytes in the data source name area */ 
#define CASL_DATA_SOURCE_NAME_SIZE 32 
typedef struct 
{ 
CASL_WORD renamedCategories; /* bitfield of categories with a changed name */ 
char categoryLabels[dmRecNumCategories][dmCategoryLength]; 
CASL_BYTE categoryUniqIDs[dmRecNumCategories]; 
CASL_BYTE lastUniqID; /* Uniq IDs for categories generated by device */ 
/* are 0 - 127. Those from PC are 128 - 255. */ 
CASL_BYTE reserved1; /* from the compiler word aligning things */ 
CASL_WORD reserved2; 
CASL_WORD status_word; /* LSB is dirty (from sync) bit for the DBFILE */ 
CASL_WORD sync_pref; /* sync preference (SYNC_PREF_UNDEFINED, */ 
/* SYNC_PREF_PDA_TO_PC, */ 
/* (see casltabl.h) SYNC_PREF_MERGE, */ 
/* SYNC_PREF_PC_TO_PDA */ 
CASL_DWORD sync_version; /* sync version should be 2 */ 
CASL_DWORD spare2; /* spares for future use */ 
CASL_DWORD spare3; 
CASL_WORD num_casl_fields; /* number of CASL record fields for DBFILE */ 
/* the records for each FIELD on the DBFILE */ 
/* alloced here at the end of app info blk */ 
} casl_app_info; 
/* 
CASL DB Field - info about fields that make up a record in a CASL DB 
Follows casl_app_info 
if CASL_DATA_SOURCE_NAME_PRESENT set then data source name follows casl_app_info 
then fields follow that (note data source name is always CASL_DATA_SOURCE_NAME_SIZE 
and is null terminated (so max size is really 31 characters plus one for null). 
*/ 
typedef struct 
{ 
CASL_WORD cdf_sym_index; 
CASL_WORD cdf_sym_type; 
CASL_WORD cdf_sym_size; 
} CASL_db_field; 
/* 
sync_pref 
*/ 
#define SYNC_PREF_UNDEFINED 0 
#define SYNC_PREF_PDA_TO_PC 1 
#define SYNC_PREF_PC_TO_PDA 2 
#define SYNC_PREF_MERGE 3 
#define SYNC_PREF_NONE 4 
/* 
Each record is a standard PalmPilot records with the following data content defined 
by the casl_app_info and structures contained in the PalmPilot user defined AppInfo block 
For example if there where two numeric fields then the first 8 bytes (after the standard 
Palm record header) would be the first field and the next 8 bytes would be the second field 
*/ 
/* 
Data type symbolic definitions 
*/ 
#define DT_NUM 0 /* Numeric type def (double) */ 
#define DT_STR 1 /* Null termed string */ 
#define DT_ARRAY 2 /* Numeric array type (double) */ 
#define DT_STR_ARRAY 3 /* Array of strings (not used in database)*/ 
#define DT_BYTE_ARRAY 4 /* Array of bytes */ 
/* going from PDA to PC */ 
DT_NUM is a C double (byte swap when going to PDA->PC) 
DT_STR is a C null terminated string (add carriage returns for line feeds with out CR's, even #bytes long) 
DT_ARRAY is an array of doubles with CASL_db_field->m_wSymSize elements 
DT_BYTE_ARRAY is a byte array that is CASL_db_field->m_wSymSize long. 
/* going from PC to PDA */ 
DT_NUM is a C double (byte swap when going to PC->PDA) 
DT_STR is a C null terminated string (strip carriage returns from CR-LF, even #bytes long) 
DT_ARRAY is an array of doubles with CASL_db_field->m_wSymSize elements 
DT_BYTE_ARRAY is a byte array that is CASL_db_field->m_wSymSize long.