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.

RELATED

       XmDirectionMatch(3),    XmDirectionMatchPartial(3),     XmDirectionToStringDirection(3),     XmString(3),
       XmStringDirection(3), and XmStringDirectionToDirection(3).

                                                                                                  XmDirection(3)