Contents of the "wingui" sub-archive for UnZip 5.2 and later:

  Contents       this file
  README         notes about WizUnZip 3.0 development; compiler notes
  wunzip16.bcc   makefile for compiling 16-bit WizUnZip GUI app with Borland C
  wunzip32.bcc   makefile for compiling 32-bit WizUnZip GUI app with Borland C
  wizunz32.msc   makefile for compiling 32-bit WizUnZip GUI app with Microsoft C
  wizunzip.def   definitions file for 16-bit app
  wizunz32.def   definitions file for 32-bit app
  wizunzip.rc    resource file for WizUnZip

  about.c        about dialog code
  action.c       pre- and post-processing of "unzip" function
  copyfile.c     copy/move/rename dialog code
  helpids.h      help ID macros
  iconbar.c      button toolbar code
  kbdproc.c      just like it says
  makedir.c      make-directory dialog code
  password.c     password dialog code
  password.h
  pattern.c      pattern-select dialog code
  pattern.h
  rename.c       rename dialog code
  rename.h
  replace.c      replace dialog code
  replace.h      
  seldir.c       select-directory dialog code
  sizewndw.c     size-window code
  sound.c        sound dialog code and multimedia calls
  sound.h        
  status.c       displays in "status/display" listbox
  updatelb.c     updates the main listbox
  winit.c        WizUnZip initialization code
  winsetup.c     primary setup code
  wizunzip.c     main WizUnZip file; contains WinMain
  wizunzip.h     main header file
  wndproc.c      has most of WizUnZip's window procedures

  wizunzip.rtf   source for help file
  wizunzip.hpj   help project file
  wizunzip.hlp   help file

  about.dlg      about dialog template
  copyfile.dlg   copy/move/delete dialog template
  makedir.dlg    make-directory dialog template
  password.dlg   password dialog template
  pattern.dlg    select-by-pattern dialog template
  rename.dlg     rename dialog template
  replace.dlg    replace dialog template
  seldir.dlg     select-unzip-to dialog template
  sound.dlg      sound-options dialog template

  wizunzip.wav   "unzipping" sound file (binary)

  wizunzip.ico   main WizUnZip icon (binary)
  unzipped.ico   "unzipped" icon (binary)
  help.cur       help cursor (binary)

  clrstat.bmp    button-bar bitmaps (binary)
  comment.bmp
  copy.bmp
  copystat.bmp
  deselall.bmp
  display.bmp
  erase.bmp
  exit.bmp
  export.bmp
  extract.bmp
  help.bmp
  list.bmp
  makedir.bmp
  move.bmp
  open-up.bmp
  rename.bmp
  selall.bmp
  selpat.bmp
  split.bmp
  status.bmp
  test.bmp
  trash.bmp
  unzipto.bmp

Note that the MSC port has not been tested nearly as well as the Borland
port.  Also note that Borland C++ 5.0 is a buggy load of...well, is buggy.
Use Borland C++ 4.5 for best results.