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
XmRIGHTTOLEFTTOPTOBOTTOM 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:
⊕ XmRIGHTTOLEFTMASK
⊕ XmLEFTTORIGHTMASK
⊕ XmTOPTOBOTTOMMASK
⊕ XmBOTTOMTOTOPMASK
⊕ XmPRECEDENCEHORIZMASK
⊕ XmPRECEDENCEVERTMASK
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:
⊕ XmHORIZONTALMASK
⊕ XmPRECEDENCEMASK
⊕ XmVERTICALMASK
Motif also provides the following enumerated constants for
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XmDirection(3X) UNIX System V XmDirection(3X)
specifying various combinations of directions:
XmRIGHTTOLEFTTOPTOBOTTOM
Specifies that the components are laid out from
right to left first, then top to bottom.
XmLEFTTORIGHTTOPTOBOTTOM
Specifies that the components are laid out from
left to right first, then top to bottom.
XmRIGHTTOLEFTBOTTOMTOTOP
Specifies that the components are laid out from
right to left first, then bottom to top.
XmLEFTTORIGHTBOTTOMTOTOP
Specifies that the components are laid out from
left to right first, then bottom to top.
XmTOPTOBOTTOMRIGHTTOLEFT
Specifies that the components are laid out from
top to bottom first, then right to left.
XmTOPTOBOTTOMLEFTTORIGHT
Specifies that the components are laid out from
top to bottom first, then left to right.
XmBOTTOMTOTOPRIGHTTOLEFT
Specifies that the components are laid out from
bottom to top first, then right to left.
XmBOTTOMTOTOPLEFTTORIGHT
Specifies that the components are laid out from
bottom to top first, then left to right.
XmTOPTOBOTTOM
Specifies that the components are laid out from
top to bottom. If horizontal direction is
important, do not use this constant.
XmBOTTOMTOTOP
Specifies that the components are laid out from
bottom to top. If horizontal direction is
important, do not use this constant.
XmDEFAULTDIRECTION
Specifies that the components are laid out
according to the default direction. (This constant
is primarily for widget writers.)
XmLEFTTORIGHT
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.
XmRIGHTTOLEFT
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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