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







scopedobject - Create and manipulate a scoped 








scopedobject objName ?options?








None








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 {}.
















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 instantiated 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 command when an object enters and
    exits its scope.








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:









  

  
Returns the current value of the configuration option given by
      option. Option may have any of the values accepted by the
      scopedobject command.

  

  
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.
    

  











  

  
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













John A. Tucker








scopedobject, object







  

     
    Tk