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NAME
XmMessageBox — The MessageBox widget class "XmMessageBox" "widget class" "MessageBox"
SYNOPSIS
#include <Xm/MessageB.h>
DESCRIPTION
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
Separator.
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.
Descendants
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 Descendant │ Class │ Identity │
├─────────────────┼────────────────────┼───────────────────────────────┤
├─────────────────┼────────────────────┼───────────────────────────────┤
├─────────────────┼────────────────────┼───────────────────────────────┤
│Cancel │ XmPushButtonGadget │ Cancel button │
├─────────────────┼────────────────────┼───────────────────────────────┤
│Help │ XmPushButtonGadget │ Help button │
├─────────────────┼────────────────────┼───────────────────────────────┤
│Message │ XmLabelGadget │ displayed message │
├─────────────────┼────────────────────┼───────────────────────────────┤
│OK │ XmPushButtonGadget │ OK button │
├─────────────────┼────────────────────┼───────────────────────────────┤
│Separator │ XmSeparatorGadget │ dividing line between message │
│ │ │ and buttons │
├─────────────────┼────────────────────┼───────────────────────────────┤
│Symbol │ XmLabelGadget │ icon symbolizing message type │
├─────────────────┼────────────────────┼───────────────────────────────┤
└─────────────────┴────────────────────┴───────────────────────────────┘
Classes
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).
┌──────────────────────────────────────────────────────────────────────────────────────────────┐
--
RELATED
Composite(3), Constraint(3), Core(3), XmBulletinBoard(3), XmCreateErrorDialog(3),
XmCreateInformationDialog(3), XmCreateMessageBox(3), XmCreateMessageDialog(3),
XmCreateQuestionDialog(3), XmCreateTemplateDialog(3), XmCreateWarningDialog(3),
XmCreateWorkingDialog(3), XmManager(3), XmMessageBoxGetChild(3), XmVaCreateMessageBox(3),
and XmVaCreateManagedMessageBox(3).
XmMessageBox(3)