Core(3X)Core(3X)NAMECore — The Core widget class
SYNOPSIS
#include <Xm/Xm.h>
VERSION
This page documents version 1.2 of the Motif library.
DESCRIPTIONCore is the Xt Intrinsic base class for windowed widgets. The Object
and RectObj classes provide support for windowless widgets.
Classes
All widgets are built from Core.
The class pointer is widgetClass.
The class name is Core.
New Resources
The following table defines a set of widget resources used by the pro‐
grammer to specify data. The programmer can also set the resource val‐
ues 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).
Core Resource Set
Name Class Type Default Access
───────────────────────────────────────────────────────────────────────────────────────────────────────────────
XmNaccelerators XmCAccelerators XtAccelerators dynamic CSG
XmNancestorSensitive XmCSensitive Boolean dynamic G
XmNbackground XmCBackground Pixel dynamic CSG
XmNbackgroundPixmap XmCPixmap Pixmap XmUNSPECIFIED_PIXMAP CSG
XmNborderColor XmCBorderColor Pixel XtDefaultForeground CSG
XmNborderPixmap XmCPixmap Pixmap XmUNSPECIFIED_PIXMAP CSG
XmNborderWidth XmCBorderWidth Dimension 1 CSG
XmNcolormap XmCColormap Colormap dynamic CG
XmNdepth XmCDepth int dynamic CG
XmNdestroyCallback XmCCallback XtCallbackList NULL C
XmNheight XmCHeight Dimension dynamic CSG
XmNinitialResourcesPersistent XmCInitialResourcesPersistent Boolean True C
XmNmappedWhenManaged XmCMappedWhenManaged Boolean True CSG
XmNscreen XmCScreen Screen * dynamic CG
XmNsensitive XmCSensitive Boolean True CSG
XmNtranslations XmCTranslations XtTranslations dynamic CSG
XmNwidth XmCWidth Dimension dynamic CSG
XmNx XmCPosition Position 0 CSG
XmNy XmCPosition Position 0 CSG
Specifies a translation table that is bound with its actions in the
context of a particular widget. The accelerator table can then be
installed on some destination widget. Specifies whether the immediate
parent of the widget receives input events. Use the function XtSetSen‐
sitive to change the argument to preserve data integrity (see XmNsensi‐
tive below). For shells, the default is copied from the parent's
XmNancestorSensitive resource if there is a parent; otherwise, it is
True. For other widgets, the default is the bitwise AND of the par‐
ent's XmNsensitive and XmNancestorSensitive resources. Specifies the
background color for the widget. Specifies a pixmap for tiling the
background. The first tile is placed at the upper left-hand corner of
the widget's window. Specifies the color of the border in a pixel
value. Specifies a pixmap to be used for tiling the border. The first
tile is placed at the upper left-hand corner of the border. Specifies
the width of the border that surrounds the widget's window on all four
sides. The width is specified in pixels. A width of zero means that
no border shows. Specifies the colormap that is used for conversions
to the type Pixel for this widget instance. When changed, previously
generated pixel values are not affected, but newly generated values are
in the new colormap. For shells without parents, the default is the
default colormap of the widget's screen. Otherwise, the default is
copied from the parent. Specifies the number of bits that can be used
for each pixel in the widget's window. Applications should not change
or set the value of this resource as it is set by the Xt Intrinsics
when the widget is created. For shells without parents, the default is
the default depth of the widget's screen. Otherwise, the default is
copied from the parent. Specifies a list of callbacks that is called
when the widget is destroyed. Specifies the inside height (excluding
the border) of the widget's window. Specifies whether or not resources
are reference counted. If the value is True when the widget is cre‐
ated, the resources referenced by the widget are not reference counted,
regardless of how the resource type converter is registered. An appli‐
cation that expects to destroy the widget and wants to have resources
deallocated should specify a value of False. The default is True,
implying an assumption that the widget will not be destroyed during the
life of the application. If set to True it maps the widget (makes it
visible) as soon as it is both realized and managed. If set to False,
the client is responsible for mapping and unmapping the widget. If the
value is changed from True to False after the widget has been realized
and managed, the widget is unmapped. Specifies the screen on which a
widget instance resides. It is read only. When the Toolkit is ini‐
tialized, the top-level widget obtains its default value from the
default screen of the display. Otherwise, the default is copied from
the parent. Determines whether a widget receives input events. If a
widget is sensitive, the Xt Intrinsics' Event Manager dispatches to the
widget all keyboard, mouse button, motion, window enter/leave, and
focus events. Insensitive widgets do not receive these events. Use
the function XtSetSensitive to change the sensitivity argument. Using
XtSetSensitive ensures that if a parent widget has XmNsensitive set to
False, the ancestor-sensitive flag of all its children is appropriately
set. Points to a translations list. A translations list is a list of
events and actions that are to be performed when the events occur.
Specifies the inside width (excluding the border) of the widget's win‐
dow. Specifies the x-coordinate of the upper left outside corner of
the widget's window. The value is relative to the upper left inside
corner of the parent window. Specifies the y-coordinate of the upper
left outside corner of the widget's window. The value is relative to
the upper left inside corner of the parent window.
Translations
There are no translations for Core.
RELATED INFORMATIONObject(3X) and RectObj(3X).
Core(3X)
