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       XmMessageBox — The MessageBox widget class "XmMessageBox" "widget class" "MessageBox"


       #include <Xm/MessageB.h>


       MessageBox  is  a  dialog  class  used  for  creating simple message dialogs.  Convenience
       dialogs based on MessageBox are provided  for  several  common  interaction  tasks,  which
       include giving information, asking questions, and reporting errors.

       A  MessageBox  dialog  is  typically  transient in nature, displayed for the duration of a
       single interaction.  MessageBox is a subclass of BulletinBoard and depends on it for  much
       of its general dialog behavior.

       The default value for XmNinitialFocus is the value of XmNdefaultButton.

       A  typical  MessageBox  contains  a  message  symbol,  a message, and up to three standard
       default PushButtons: OK, Cancel, and Help.  It is laid out with the symbol and message  on
       top  and  the  PushButtons on the bottom. The Help button is positioned to the side of the
       other push buttons.  You can localize the default symbols and button labels for MessageBox
       convenience dialogs.

       The  user  can  specify resources in a resource file for the gadgets created automatically
       that contain the MessageBox symbol pixmap and separator. The gadget names are  Symbol  and

       A  MessageBox  can also be customized by creating and managing new children that are added
       to the MessageBox children created automatically by the convenience dialogs.  In the  case
       of  TemplateDialog,  only  the  separator  child  is created by default.  If the callback,
       string, or pixmap symbol resources are specified, the appropriate child will be created.

       Additional children are laid out in the following manner:

          ·  The first MenuBar child is placed at the top  of  the  window.   The  XmQTmenuSystem
             trait is used to check that it is the first MenuBar child.

          ·  All widgets or gadgets are placed after the OK button in the order of their creation
             (this order is checked using the XmQTactivatable trait).

          ·  A child that is not in the above categories is placed above the row of buttons. If a
             message  label  exists,  the  child  is  placed below the label. If a message pixmap
             exists, but a message label is absent, the child is placed on the same  row  as  the
             pixmap.  The  child  behaves  as  a work area and grows or shrinks to fill the space
             above the row of buttons. The layout of multiple work area children is undefined.

       At initialization, MessageBox looks for the following bitmap files:

          ·  xm_error

          ·  xm_information

          ·  xm_question

          ·  xm_working

          ·  xm_warning

       See XmGetPixmap(3) for a list of the paths that are searched for these files.

       MessageBox uses the XmQTactivatable and XmQTmenuSystem traits.

       MessageBox 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                      │
       │CancelXmPushButtonGadget │ Cancel button                 │
       │HelpXmPushButtonGadget │ Help button                   │
       │MessageXmLabelGadget      │ displayed message             │
       │OKXmPushButtonGadget │ OK button                     │
       │SeparatorXmSeparatorGadget  │ dividing line between message │
       │                 │                    │ and buttons                   │
       │SymbolXmLabelGadget      │ icon symbolizing message type │
       MessageBox  inherits  behavior,  resources,  and  traits from Core, Composite, Constraint,
       XmManager, and XmBulletinBoard.

       The class pointer is xmMessageBoxWidgetClass.

       The class name is XmMessageBox.

   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).

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