ptkshp - Online in the Cloud

PROGRAM:

NAME

ptksh - Perl/Tk script to provide a graphical user interface for testing Perl/Tk commands
and scripts.

SYNOPSIS

% ptksh ?scriptfile?
... version information ...
ptksh> $b=$mw->Button(-text=>'Hi',-command=>sub{print 'Hi'})
ptksh> $b->pack
ptksh> o $b
... list of options ...
ptksh> help
... help information ...
ptksh> exit
%

DESCRIPTION

ptksh is a perl/Tk shell to enter perl commands interactively. When one starts ptksh a
MainWindow is automatically created, along with a ptksh command window. One can access
the main window by typing commands using the variable $mw at the 'ptksh> ' prompt of the
command window.

ptksh supports command line editing and history. Just type "<Up>" at the command prompt
to see a history list. The last 50 commands entered are saved, then reloaded into history
list the next time you start ptksh.

ptksh supports some convenient commands for inspecting Tk widgets. See below.

To exit ptksh use: "exit".

ptksh is *not* a full symbolic debugger. To debug perl/Tk programs at a low level use the
more powerful perl debugger. (Just enter ``O tk'' on debuggers command line to start the
Tk eventloop.)

FEATURES

History
Press <Up> (the Up Arrow) in the perlwish window to obtain a gui-based history list.
Press <Enter> on any history line to enter it into the perlwish window. Then hit return.
So, for example, repeat last command is <Up><Enter><Enter>. You can quit the history
window with <Escape>. NOTE: history is only saved if exit is "graceful" (i.e. by the
"exit" command from the console or by quitting all main windows--NOT by interrupt).

Debugging Support
ptksh provides some convenience function to make browsing in perl/Tk widget easier:

?, or h
displays a short help summary.

d, or x ?args, ...?
Dumps recursively arguments to stdout. (see Data::Dumper). You must have
<Data::Dumper> installed to support this feature.

x was introduced for perl debugger compatibility.

p ?arg, ...?
appends "|\n" to each of it's arguments and prints it. If value is undef, '(undef)'
is printed to stdout.

o $widget ?-option ...?
prints the option(s) of $widget one on each line. If no options are given all options
of the widget are listed. See Tk::options for more details on the format and contents
of the returned list.

o $widget /regexp/
Lists options of $widget matching the regular expression regexp.

u ?class?
If no argument is given it lists the modules loaded by the commands you executed or
since the last time you called "u".

If argument is the empty string lists all modules that are loaded by ptksh.

If argument is a string, ``text'' it tries to do a ``use Tk::Text;''.

Packages
Ptksh compiles into package Tk::ptksh. Your code is eval'ed into package main. The
coolness of this is that your eval code should not interfere with ptksh itself.

Multiline Commands
ptksh will accept multiline commands. Simply put a "\" character immediately before the
newline, and ptksh will continue your command onto the next line.

Source File Support
If you have a perl/Tk script that you want to do debugging on, try running the command

ptksh> do 'myscript';

-- or (at shell command prompt) --

% ptksh myscript

Then use the perl/Tk commands to try out different operations on your script.

ENVIRONMENT

Looks for your .ptksh_history in the directory specified by the $HOME environment variable
($HOMEPATH on Win32 systems).

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