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       XmCommand — The Command widget class "XmCommand" "widget class" "Command"


       #include <Xm/Command.h>


       Command  is  a special-purpose composite widget for command entry that provides a built-in
       command-history mechanism.  Command includes a command-line text-input field,  a  command-
       line prompt, and a command-history list region.

       One additional WorkArea child may be added to the Command after creation.

       Whenever a command is entered, it is automatically added to the end of the command-history
       list and made visible.  This does not change the selected item in the list,  if  there  is

       Many  of  the new resources specified for Command are actually SelectionBox resources that
       have been renamed for clarity and ease of use.

       Command  automatically  creates  the  descendants  shown  in  the  following  table.    An
       application  can use XtNameToWidget to gain access to the named descendant. In addition, a
       user or an application can use the named descendant when specifying resource values.

       │Named DescendantClassIdentity                      │
       │ItemsListXmList           │ command-history list region   │
       │ItemsListSWXmScrolledWindow │ the ScrolledWindow parent  of │
       │                 │                  │ ItemsList                     │
       │SelectionXmLabelGadget    │ command-line prompt           │
       │TextXmTextField      │ command-line text-input field │
       Command  inherits  behavior,  resources,  and  traits  from  Core,  Composite, Constraint,
       XmManager, XmBulletinBoard, and XmSelectionBox.

       The class pointer is xmCommandWidgetClass.

       The class name is XmCommand.

   New Resources
       The following table defines a set of widget resources used by the  programmer  to  specify
       data.  The  programmer  can  also set the resource values for the inherited classes to set
       attributes for this widget. To reference a resource by name or by class  in  a  .Xdefaults
       file,  remove  the XmN or XmC prefix and use the remaining letters.  To specify one of the
       defined values for a resource in a .Xdefaults file, remove  the  Xm  prefix  and  use  the
       remaining  letters  (in either lowercase or uppercase, but include any underscores between
       words).  The codes in the access column indicate if the  given  resource  can  be  set  at
       creation time (C), set by using XtSetValues (S), retrieved by using XtGetValues (G), or is
       not applicable (N/A).

       │                           │   XmCommand ResourceSet             │         │        │
       │NameClassTypeDefaultAccess │
       │XmNcommand                 │ XmCTextString       │ XmString       │ ""      │ CSG    │
       │XmNcommandChangedCallback  │ XmCCallback         │ XtCallbackList │ NULL    │ C      │
       │XmNcommandEnteredCallback  │ XmCCallback         │ XtCallbackList │ NULL    │ C      │
       │XmNhistoryItems            │ XmCItems            │ XmStringTable  │ NULL    │ CSG    │
       │XmNhistoryItemCount        │ XmCItemCount        │ int            │ 0       │ CSG    │
       │XmNhistoryMaxItems         │ XmCMaxItems         │ int            │ 100     │ CSG    │
       │XmNhistoryVisibleItemCount │ XmCVisibleItemCount │ int            │ dynamic │ CSG    │
       │XmNpromptString            │ XmCPromptString     │ XmString       │ dynamic │ CSG    │
                 Contains the current command-line text. This is the  XmNtextString  resource  in
                 SelectionBox,  renamed  for  Command.   This  resource can also be modified with
                 XmCommandSetValue and XmCommandAppendValue functions.  The  command  area  is  a
                 Text widget.

                 Specifies  the list of callbacks that is called after each time the value of the
                 command  changes.   The  callback  reason  is  XmCR_COMMAND_CHANGED.   This   is
                 equivalent  to  the  XmNvalueChangedCallback  of  the Text widget, except that a
                 pointer to an XmCommandCallbackStructure is passed, and  the  structure's  value
                 member contains the XmString.

                 Specifies  the list of callbacks that is called when a command is entered in the
                 Command.   The  callback  reason  is  XmCR_COMMAND_ENTERED.  A  pointer  to   an
                 XmCommandCallback structure is passed.

                 Lists  XmString items that make up the contents of the history list. This is the
                 XmNlistItems resource in SelectionBox, renamed  for  Command.   XtGetValues  for
                 this  resource  returns the list items themselves, not a copy of the list items.
                 The application must not free the returned items.

                 Specifies  the  number  of   XmStrings   in   XmNhistoryItems.   This   is   the
                 XmNlistItemCount  resource in SelectionBox, renamed for Command.  The value must
                 not be negative.

                 Specifies the maximum number of items allowed in the  history  list.  Once  this
                 number  is  reached, an existing list item must be removed before a new item can
                 be added to the list. For each command entered, the first list item  is  removed
                 from  the  list, so the new command can be added to the list.  The value must be
                 greater than 0 (zero).

                 Specifies the number of items in the history list that should be visible at  one
                 time.  In effect, it sets the height (in lines) of the history list window. This
                 is the XmNlistVisibleItemCount resource in SelectionBox,  renamed  for  Command.
                 The  value  must  be greater than 0 (zero).  The default is dynamic based on the
                 height of the list.

                 Specifies a prompt for the command line.  This  is  the  XmNselectionLabelString
                 resource  in  SelectionBox, renamed for Command.  The default may vary depending
                 on the value of the XmNlayoutDirection resource and the locale.  In the C locale
                 the default is > (right angle bracket).

                 Now  that  some  default  localized  label  strings are provided through message
                 catalogs for the children of composite widgets, the labelString resources cannot
                 be  set  on  the  child  through  default resource files.  Instead, the resource
                 provided at the parent level must be used.

   Inherited Resources
       Command inherits behavior and resources from the superclasses described in  the  following
       tables.  For a complete description of each resource, refer to the reference page for that

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