The following WCH header files are available for development.
When you include these files in your source code, your programs can access a variety of types, functions, subroutines and constants contained within Wildcat!'s library file (WILDCAT.WCL) and a variety of external DLL files.
You should not modify these WCH header files unless you are sure you know what you are doing. Always save a backup copy of the original file if customization is required.
| Header File | Type | Description | 
| ansi file record lister.wch | WCX Library | ANSI File Area List Manager | 
| ansi picklist.wch | WCX Library | Part of the text based ANSI File Lister Module | 
| ansiutil.wch | WCX Library | Part of the text based ANSI File Lister Module | 
| arealist.wch | WCX Library | File area list manager | 
| badlist.wch | WCX Library | Check Bad List function | 
| bitlib.wch | WCX Library | Bit wise functions | 
| browser.wch | WCX Library | Browse a Text File | 
| bullutil.wch | WCX Library | Bulletins Functions | 
| carbon.wch | WCX Library | Carbon Copy Functions | 
| clientlib.wch | WCX Library | Session Access Functions | 
| cmdline.wch | WCX Library | Various input functions | 
| conflist.wch | WCX Library | Mail Conference Selection Manager | 
| contextlib.wch | WCX Library | Session Context Management functions | 
| datelib.wch | WCX Library | Date/Time Functions | 
| dateutil.wch | WCX Library | Date/Time Functions | 
| dispfile.wch | WCX Library | Display File Functions | 
| editor.wch | WCX Library | Editor Functions | 
| executil.wch | WCX Library | Shell/Exec program functions | 
| fidoutil.wch | WCX Library | Fidonet Functions | 
| fileinfolib.wch | WCX Library | ZIP FILE_ID.DIZ functions | 
| fileutil.wch | WCX Library | File Record Display Functions | 
| fileview.wch | WCX Library | File Record Display Functions | 
| flist.wch | WCX Library | File Record Display Functions | 
| flutil.wch | WCX Library | File Record Display Functions | 
| fnutil.wch | WCX Library | File Record Display Functions | 
| frontend.wch | structures | Wonline Frontend DLL structures | 
| fsutil.wch | WCX Library | File Record Display Functions | 
| grouplist.wch | WCX Library | Group Lister/Pager | 
| htmlsessionlib.wch | WCX Library | Web Session Functions | 
| htmltemplate.wch | WCX Library | obselete | 
| htmlutil.wch | WCX Library | web-based functions | 
| htmlutil-file.wch | WCX Library | web-based file I/O functions | 
| htmlutil-mime.wch | WCX Library | web-based mail mime functions | 
| htmlutil-msg.wch | WCX Library | web-based mail functions | 
| logfile.wch | WCX Library | general purpose logging function | 
| logonhourslib.wch | WCX Library | Session Hours functions | 
| logonutl.wch | WCX Library | Various post logon functions | 
| marklist.wch | WCX Library | List Marker Functions | 
| markmsg.wch | WCX Library | List Marker Functions | 
| menuutil.wch | WCX Library | ANSI Menu management functions | 
| mimelib.wch | DLL Library | MIME I/O functions | 
| mimeutl.wch | WCX Library | MIME I/O functions | 
| msglib.wch | WCX Library | Message I/O Functions | 
| msgthread.wch | DLL Library | Message Thread Manager | 
| msgutil.wch | WCX Library | Various Message Functions | 
| newfiles.wch | WCX Library | Display New Files Functions | 
| nodelib.wch | WCX Library | Node Status Function | 
| pagemsg.wch | structures | obselete | 
| pager.wch | WCX Library | Instant Messenger Pager functions | 
| passwordchange.wch | WCX Library | Change Password Functions | 
| protutil.wch | WCX Library | Upload/Download Functions | 
| qxindex.wch | DLL Library | obsolete | 
| readutil.wch | WCX Library | Various Input functions | 
| rfclib.wch | WCX Library | RFC email header library functions | 
| smtpfilterhlp.wch | WCX Library | SMTPFILTER helper WCX Library file. | 
| sqlutil.wch | WCX Library | SQL helper WCX Library | 
| strlib.wch | WCX Library | Various String functions | 
| timeutil.wch | WCX Library | Time Functions | 
| upload.wch | WCX Library | Upload Functions | 
| userproplib.wch | WCX Library | Web based User Settings functins | 
| usersett.wch | WCX Library | User Settings Functions | 
| userutil.wch | WCX Library | User Settings Functions | 
| util.wch | WCX Library | Various Input functions | 
| wcAsyncErrors.wch | constants | Upload/Download Error constantst | 
| wcBasic.wch | WCX Library | Includes some basic headers | 
| wcconfiglib.wch | WCX Library | Configuration Functions | 
| wcgtype.wch | structures | Wildcat! configuration structure header file | 
| wcLoginAlias.wch | WCX Library | Multi-Account single user alias system | 
| wcodbc.wch | DLL Library | Exposes ODBC API | 
| wcrpclib.wch | WCX Library | WCRPC related Web Service Function | 
| wcsgate.wch | DLL Library | Exposes Wildcat! configuration API | 
| wcsmw.wch | DLL Library | Exposes Wildcat! configuration API | 
| wctypemw.wch | structures | Wildcat! configuration structure header file | 
| wcmp3lib.wch | WCX Library | MP3 Tag Reading Library | 
| wcxml.wch | WCX Library | XML Parser I/O function | 
| win32ini.wch | WCX Library | Exposes Win32 and Wildcat! Registry Functions | 
| wingdi.wch | structures | Color constants | 
| windows.wch | DLL Library | Exposes Win32 Kernel API | 
| winregistry.wch | DLL Library | Exposes Win32 Registry API | 
| winsock.wch | DLL Library | Exposes Win32 Socket API | 
| wsockhlp.wch | WCX Library | Exposes Win32 Socket Helper Functions |