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       iclass - class browser


       iclass [-r] [-v] [-c] path [path...]


       Iclass  is  a  simple  class browser that lets you navigate through C++
       class hierarchies and view the definition of a particular  class.   You
       can  select  classes from three browsers: the first shows a list of all
       known classes; the second shows the parents of the selected  class,  if
       any;  and  the  third shows the children of the selected class, if any.
       You can choose a name from any of these lists and tell iclass  to  show
       the  definition  of  that  class,  or  you can type the name of a class
       explicitly in the StringEditor labeled ‘‘selected class.’’  The view of
       the  class  definition  shows the source code from the header file that
       defines the selected class.


       Iclass interprets arguments that specify the header files to search for
       class definitions.  Each non-option argument on the command line should
       specify a pathname to a header file or a  directory  containing  header
       files.  If the pathname is a filename ending in the suffix ‘‘.h’’, then
       iclass will scan that header file.  If the  pathname  is  a  directory,
       then  it  will  scan  every header file in that directory.  Iclass will
       ignore filenames that do not end  in  the  suffix  ‘‘.h’’,  unless  the
       ‘‘-c’’  option  is  given.  In this case iclass will search both ‘‘.h’’
       and ‘‘.C’’ files for class definitions.

       You may use any of the standard options accepted by InterViews programs
       in addition to the following options:

       -r     Recursively scan subdirectories for additional header files when
              scanning a directory.

       -v     Verbosely print the name of every header file scanned.

       -c     Allow iclass to search ‘‘.C’’ files as well as ‘‘.h’’ for  class
              definitions.   This option should be used carefully.  Because of
              the way that iclass searches for definitions, it is possible for
              it  to  get  confused by code in a ‘‘.C’’ file and think it is a
              definition.  Nonetheless, this is a useful option if  there  are
              C++ input files that contain definitions.


       Iclass  provides  pull-down  menus  for issuing commands.  The ‘‘File’’
       menu includes the following commands:

       Scan Files/Directories...
           Prompt for additional pathnames to scan.

       Clear Classes
           Purge iclass of all classes it has scanned.

           Close the window and exit.

       Commands in the ‘‘Search’’ menu include:

       Forward Search...
              Search forward in the class definition for a match with a  given
              regular  expression,  wrapping  from the end to the beginning of
              the buffer if necessary.

       Backward Search...
              Search backward for a match with a given regexp.

       Go to Line...
              Move the cursor to the beginning of the  given  line,  scrolling
              the display if necessary.


       The  left  mouse  button selects text.  Left-clicking inside a browser,
       StringEditor, or class definition also focuses keyboard  input  to  it,
       which  lets  it  interpret subsequent keyboard commands as scrolling or
       selection  operations.   Double  left-clicking  inside  a  browser   is
       equivalent  to selecting a class and then pressing the ‘‘Show’’ button.

       The middle and right mouse  buttons  scroll  text  in  different  ways.
       Middle-clicking  lets  you  ‘‘grab-scroll’’  the  text.   During  grab-
       scrolling, the text is scrolled to follow the mouse position, making it
       appear  as  though  you  are  dragging the text itself.  Right-clicking
       engages ‘‘rate-scrolling,’’ a  joy-stick-like  scrolling  interface  in
       which  the scrolling rate increases as you drag the mouse away from the
       initial click point.  For example, dragging the mouse  downwards  after
       the  initial  click  scrolls a browser downwards at an increasing rate;
       dragging upwards thereafter reduces  the  rate  until  scrolling  stops
       entirely  at  the  initial  click point.  Dragging up beyond this point
       makes the browser scroll in the reverse direction.


       For convenience, all menu commands have keyboard equivalents:

       (^V)   Scan a file or directory.

       (^Q)   Quit.

       (^S)   Search forward.

       (^R)   Search backward.

       (^N)   Go to a line.

       Iclass also provides keyboard commands for changing focus:

       ESC or TAB
              Set focus to the StringEditor showing the selected class.

       CR     Show the selected class (equivalent to pressing the Show button)
              and set focus to the class definition.


       Regexp(3I), StringBrowser(3I), StringEditor(3I), TextEditor(3I)