XmDirection(library call) XmDirection(library call)
NAME
XmDirection -- Data type for the direction of widget components
SYNOPSIS
#include <Xm/Xm.h>
DESCRIPTION
XmDirection is the data type specifying the direction in which the sys-
tem displays subwidgets, children of widgets, or other visual compo-
nents 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 horizon-
tal and vertical directions can be specified independent of each other.
XmDirection also specifies the precedence of the horizontal and verti-
cal 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, XmDirection also pro-
vides 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 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 bot-
tom. 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 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), XmDirectionToStringDi-
rection(3), XmString(3), XmStringDirection(3), and XmStringDirection-
ToDirection(3).
XmDirection(library call)
openMotif 2.3.1 - Generated Sun Nov 30 10:43:53 CST 2008