CORE(3Xh) — Stardent Computer Inc.

NAME

CoreClass − the Xt Intrinsics core widget meta class

SYNOPSIS

#include <X11/StringDefs.h>
#include <X11/Intrinsic.h>

CLASSES

All widgets are built from the Core class.

DESCRIPTION

The Core class is an Xt Intrinsics meta class. It is never instantiated as a widget. Its sole purpose is as a supporting superclass for other widget classes. It provides resources required by all widgets: x y location, width, height, window border width, and so on.

NEW RESOURCES

Core defines a set of resource types used by the programmer to specify the data for widgets which are subclasses of Core.

Core Resource Set -- CORE(3X)
Name	Class	Type	Default
XtNancestorSensitive	XtCSenstitive	Boolean	TRUE
XtNx	XtCPosition	int	0
XtNy	XtCPosition	int	0
XtNwidth	XtCWidth	int	0
XtNheight	XtCHeight	int	0
XtNdepth	XtCDepth	int	0
XtNbackground	XtCBackground	Pixel	White
XtNbackgroundPixmap	XtCPixmap	Pixmap	Unspecified
XtNborderWidth	XtCBorderWidth	int	1
XtNborderColor	XtCBorderColor	Pixel	Black
XtNborderPixmap	XtCPixmap	Pixmap	Unspecified
XtNsensitive	XtCSensitive	Boolean	TRUE
XtNmappedWhenManaged	XtCMappedWhenManaged	Boolean	TRUE
XtNdestroyCallback	XtCCallback	Pointer	NULL
XtNtranslations	XtCTranslations	XtTranslations	NULL

XtNancestorSensitive
This argument specifies whether the immediate parent of the widget will receive input events. Use the function XtSetSensitive if you are changing the argument to preserve data integrity (see XtNsensitive below).

XtNxThis argument contains the x-coordinate of the widget’s upper left hand corner (excluding the border) in relation to its parent widget. Programs should not change this argument directly, but use geometry manager requests instead in order to ensure proper relationships with other widgets are maintained.

XtNyThis argument contains the y-coordinate of the widget’s upper left hand corner (excluding the border) in relation to its parent widget. Programs should not change this argument directly, but use geometry manager requests instead in order to ensure proper relationships with other widgets are maintained.

XtNwidth
This argument contains the width of the widget’s window in pixels, not including the border area. Programs should not change this argument directly, but use geometry manager requests instead in order to ensure proper relationships with other widgets are maintained.

XtNheight
This argument contains the height of the widget’s window in pixels, not including the border area. Programs should not change this argument directly, but use geometry manager requests instead in order to ensure proper relationships with other widgets are maintained.

XtNdepth
Determines how many bits should be used for each pixel in the widget’s window. Programs should not change or set this, it will be set by the Xt Intrinsics when the widget is created.

XtNbackground
This argument specifies the background color for the widget.

XtNbackgroundPixmap
The application can specify a pixmap to be used for tiling the background. The first tile is place at the upper left hand corner of the widget’s window.

XtNborderWidth
This argument sets 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 no border will show.

XtNborderColor
This argument specifies the color of the border.

XtNborderPixmap
The application can specify a pixmap to be used for tiling the border. The first tile is place at the upper left hand corner of the border.

XtNsensitive
This argument determines whether a widget will receive input events. If a widget is sensitive, the Xt Intrinsic’s Event Manager will dispatch 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 if you are changing the sensitivity argument. That way you ensure that if a parent widget has XtNsensitive set to FALSE, the ancestor-sensitive flag of all its children will be appropriately set.

XtNmappedWhenManaged
If set to TRUE, the widget will be mapped (made 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.

XtNdestroyCallback
This is a pointer to a callback list containing routines to be called when the widget is destroyed.

XtNtranslations
This is a pointer to a translations list.

INHERITED RESOURCES

The Core class is the root class. It inherits no resources.

TRANSLATIONS

None

ACTIONS