NAME¶
XmDirection — Data type for the direction of widget components
"XmDirection" "data types" "XmDirection"
SYNOPSIS¶
#include <Xm/Xm.h>
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:
- •
- XmRIGHT_TO_LEFT_MASK
- •
- XmLEFT_TO_RIGHT_MASK
- •
- XmTOP_TO_BOTTOM_MASK
- •
- XmBOTTOM_TO_TOP_MASK
- •
- XmPRECEDENCE_HORIZ_MASK
- •
- XmPRECEDENCE_VERT_MASK
In addition to the preceding single bit masks,
XmDirection also provides
the following multiple bit masks. These multiple bit masks are particularly
useful as arguments to
XmDirectionMatchPartial:
- •
- XmHORIZONTAL_MASK
- •
- XmPRECEDENCE_MASK
- •
- 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 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 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.
XmDirectionMatch(3),
XmDirectionMatchPartial(3),
XmDirectionToStringDirection(3),
XmString(3),
XmStringDirection(3), and
XmStringDirectionToDirection(3).
