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scopedobject(1)                                [incr Widgets]                                scopedobject(1)



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NAME
       scopedobject - Create and manipulate a scoped  class object.

SYNOPSIS
       scopedobject objName ?options?

INHERITANCE
       None

STANDARD OPTIONS
       Name:     enterscopecommand:
       Command-Line Switch:     -enterscopecommand

              Specifies a Tcl command to invoke when an object enters scope (i.e. when it is created..). The
              default is {}.

       Name:     enterscopecommand:
       Command-Line Switch:     -enterscopecommand

              Specifies a Tcl command to invoke when an object exits scope (i.e. when it is deleted..).  The
              default is {}.

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DESCRIPTION
       The  scopedobject command creates a base class for defining Itcl classes which posses scoped behavior
       like Tcl variables.  The objects are only accessible within the procedure in which they are instanti-ated instantiated
       ated  and  are  deleted  when the procedure returns.  This class was designed to be a general purpose
       base class for supporting scoped incr Tcl classes.  The options include the execute a Tcl script com-mand command
       mand when an object enters and exits its scope.

METHODS
       The  scopedobject command creates a new Tcl command whose name is pathName.  This command may be used
       to invoke various operations on the object.  It has the following general form:

              pathName option ?arg arg ...?

       Option and the args determine the exact behavior of the command.  The following commands are possible
       for scopedobject objects:

OBJECT-SPECIFIC METHODS
       pathName cget option
              Returns the current value of the configuration option given by option.  Option may have any of
              the values accepted by the scopedobject command.

       pathName configure ?option? ?value option value ...?
              Query or modify the configuration options of the object.  If no option is specified, returns a
              list  describing  all  of  the available options for pathName.  If option is specified with no
              value, then the command returns a list describing the one named  option  (this  list  will  be
              identical  to  the corresponding sublist of the value returned if no option is specified).  If
              one or more option-value pairs are specified, then the  command  modifies  the  given  objects
              option(s)  to  have  the  given  value(s);   in this case the command returns an empty string.
              Option may have any of the values accepted by the scopedobject command.


EXAMPLE
              The scopedobject was primarily meant to be a base class.  The following is an example of usage
              without inheritance:


                proc scopedobject_demo {} {
                  iwidgets::scopedobject #auto         -exitscopecommand {puts "enter scopedobject_demo"}         -exitscopecommand {puts "exit scopedobject_demo"}
                }

                scopedobject_demo



AUTHOR
       John A. Tucker

KEYWORDS
       scopedobject, object



Tk                                                                                           scopedobject(1)