Core(3)
NAME
Core --- The Core widget class "Core" "widget class" "Core"
SYNOPSIS
#include <Xm/Xm.h>
DESCRIPTION
Core 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
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).
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
XmNaccelerators
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. Note that
the default accelerators for any widget will always be
installed, no matter whether this resource is specified or
not.
XmNancestorSensitive
Specifies whether the immediate parent of the widget receives
input events. Use the function XtSetSensitive to change the
argument to preserve data integrity (see XmNsensitive). 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 parent's XmNsensitive and
XmNancestorSensitive resources.
XmNbackground
Specifies the background color for the widget.
XmNbackgroundPixmap
Specifies a pixmap for tiling the background. The first tile
is placed at the upper left corner of the widget's window.
XmNborderColor
Specifies the color of the border in a pixel value.
XmNborderPixmap
Specifies a pixmap to be used for tiling the border. The
first tile is placed at the upper left corner of the border.
XmNborderWidth
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 0 (zero) means that no border shows. Note that you
should use resources like XmNshadowThickness and
XmNhighlightThickness instead of XmNborderWidth to specify
border widths.
XmNcolormap
Specifies the colormap that is used for conversions to the
type Pixel for this widget instance. When this resource is
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.
XmNdepth 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.
XmNdestroyCallback
Specifies a list of callbacks that is called when the widget
is destroyed.
XmNheight Specifies the inside height (excluding the border) of the
widget's window.
XmNinitialResourcesPersistent
Specifies whether or not resources are reference counted. If
the value is True when the widget is created, the resources
referenced by the widget are not reference counted,
regardless of how the resource type converter is registered.
An application 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.
XmNmappedWhenManaged
If this resource is set to True, it maps the widget (makes it
visible) as soon as it is both realized and managed. If this
resource is 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.
XmNscreen Specifies the screen on which a widget instance resides. It
is read only. When the Toolkit is initialized, the top-level
widget obtains its default value from the default screen of
the display. Otherwise, the default is copied from the
parent.
XmNsensitive
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.
XmNtranslations
Points to a translations list. A translations list is a list
of events and actions that are to be performed when the
events occur. Note that the default translations for any
widget will always be installed, no matter whether this
resource is specified or not.
XmNwidth Specifies the inside width (excluding the border) of the
widget's window.
XmNx 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.
XmNy 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
Object(3) and RectObj(3). Core(3)
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