XmDirection(3X) UNIX System V XmDirection(3X)
NAME
XmDirection - Data type for the direction of widget
components
SYNOPSIS
#include <Xm/Xm.h>
VERSION
This page documents Motif 2.1.
DESCRIPTION
XmDirection is the data type specifying the direction in
which the system displays subwidgets, children of widgets,
or other visual components that are to be laid out. This
data type also affects traversal order within tab groups.
XmDirection is implemented as an unsigned char bit mask.
The horizontal and vertical directions can be specified
independent of each other. XmDirection also specifies the
precedence of the horizontal and vertical directions
relative to each other. For example, a value of
XmRIGHT_TO_LEFT_TOP_TO_BOTTOM lays out a component
horizontally from right to left first, then vertically top
to bottom.
XmDirection provides the following masks, each of which
corresponds to a particular bit in XmDirection:
o XmRIGHT_TO_LEFT_MASK
o XmLEFT_TO_RIGHT_MASK
o XmTOP_TO_BOTTOM_MASK
o XmBOTTOM_TO_TOP_MASK
o XmPRECEDENCE_HORIZ_MASK
o XmPRECEDENCE_VERT_MASK
In addition to the preceding single bit masks,
XmDirectionalso provides the following multiple bit masks.
These multiple bit masks are particularly useful as
arguments to XmDirectionMatchPartial:
o XmHORIZONTAL_MASK
o XmPRECEDENCE_MASK
o XmVERTICAL_MASK
Motif also provides the following enumerated constants for
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XmDirection(3X) UNIX System V XmDirection(3X)
specifying various combinations of directions:
XmRIGHT_TO_LEFT_TOP_TO_BOTTOM
Specifies that the components are laid out from
right to left first, then top to bottom.
XmLEFT_TO_RIGHT_TOP_TO_BOTTOM
Specifies that the components are laid out from
left to right first, then top to bottom.
XmRIGHT_TO_LEFT_BOTTOM_TO_TOP
Specifies that the components are laid out from
right to left first, then bottom to top.
XmLEFT_TO_RIGHT_BOTTOM_TO_TOP
Specifies that the components are laid out from
left to right first, then bottom to top.
XmTOP_TO_BOTTOM_RIGHT_TO_LEFT
Specifies that the components are laid out from
top to bottom first, then right to left.
XmTOP_TO_BOTTOM_LEFT_TO_RIGHT
Specifies that the components are laid out from
top to bottom first, then left to right.
XmBOTTOM_TO_TOP_RIGHT_TO_LEFT
Specifies that the components are laid out from
bottom to top first, then right to left.
XmBOTTOM_TO_TOP_LEFT_TO_RIGHT
Specifies that the components are laid out from
bottom to top first, then left to right.
XmTOP_TO_BOTTOM
Specifies that the components are laid out from
top to bottom. If horizontal direction is
important, do not use this constant.
XmBOTTOM_TO_TOP
Specifies that the components are laid out from
bottom to top. If horizontal direction is
important, do not use this constant.
XmDEFAULT_DIRECTION
Specifies that the components are laid out
according to the default direction. (This constant
is primarily for widget writers.)
XmLEFT_TO_RIGHT
Specifies that the components are laid out from
left to right. If vertical direction is
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XmDirection(3X) UNIX System V XmDirection(3X)
important, do not use this constant.
XmRIGHT_TO_LEFT
Specifies that the components are laid out from
right to left. If vertical direction is
important, do not use this constant.
RELATED
XmDirectionMatch(3), XmDirectionMatchPartial(3),
XmDirectionToStringDirection(3), XmString(3),
XmStringDirection(3), and XmStringDirectionToDirection(3).
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