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pack-old(n)                                 Tk Built-In Commands                                 pack-old(n)



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NAME
       pack-old - Obsolete syntax for packer geometry manager

SYNOPSIS
       pack after sibling window options ?window options ...?

       pack append parent window options ?window options ...?

       pack before sibling window options ?window options ...?

       pack unpack window
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DESCRIPTION
       Note:  this  manual  entry  describes the syntax for the pack command as it existed before Tk version
       3.3.  Although this syntax continues to be supported for backward compatibility, it is  obsolete  and
       should not be used anymore.  At some point in the future it may cease to be supported.

       The  packer  is  a  geometry  manager that arranges the children of a parent by packing them in order
       around the edges of the parent.  The first child is placed against one side of the window,  occupying
       the  entire  span of the window along that side.  This reduces the space remaining for other children
       as if the side had been moved in by the size of the first child.   Then  the  next  child  is  placed
       against  one  side of the remaining cavity, and so on until all children have been placed or there is
       no space left in the cavity.

       The before, after, and append forms of the pack command are used to insert one or more children  into
       the  packing  order  for their parent.  The before form inserts the children before window sibling in
       the order;  all of the other windows must be siblings of sibling.  The after form inserts the windows
       after  sibling,  and  the append form appends one or more windows to the end of the packing order for
       parent.  If a window named in any of these commands is already packed in its parent,  it  is  removed
       from  its current position in the packing order and repositioned as indicated by the command.  All of
       these commands return an empty string as result.

       The unpack form of the pack command removes window from the packing order of its  parent  and  unmaps
       it.  After the execution of this command the packer will no longer manage window's geometry.

       The placement of each child is actually a four-step process; the options argument following each win-dow window
       dow consists of a list of one or more fields that govern the placement of that window.  In  the  dis-cussion discussion
       cussion below, the term cavity refers to the space left in a parent when a particular child is placed
       (i.e. all the space that was not claimed by earlier children in the packing order).  The term  parcel
       refers  to  the space allocated to a particular child;  this is not necessarily the same as the child
       window's final geometry.

       The first step in placing a child is to determine which side of the cavity it will lie against.   Any
       one of the following options may be used to specify a side:

       top    Position  the  child's  parcel  against the top of the cavity, occupying the full width of the
              cavity.

       bottom Position the child's parcel against the bottom of the cavity, occupying the full width of  the
              cavity.

       left   Position  the child's parcel against the left side of the cavity, occupying the full height of
              the cavity.

       right  Position the child's parcel against the right side of the cavity, occupying the full height of
              the cavity.

       At most one of these options should be specified for any given window.  If no side is specified, then
       the default is top.

       The second step is to decide on a parcel for the child.  For top and bottom windows, the desired par-cel parcel
       cel  width  is  normally  the  cavity  width  and the desired parcel height is the window's requested
       height, as passed to Tk_GeometryRequest. For left and right windows, the  desired  parcel  height  is
       normally  the  cavity  height  and the desired width is the window's requested width.  However, extra
       space may be requested for the window using any of the following options:

       padx num    Add num pixels to the window's requested  width  before  computing  the  parcel  size  as
                   described above.

       pady num    Add  num  pixels  to  the  window's  requested height before computing the parcel size as
                   described above.

       expand      This option requests that the window's parcel absorb any extra space  left  over  in  the
                   parent's cavity after packing all the children.  The amount of space left over depends on
                   the sizes requested by the other children, and may be zero.  If several windows have  all
                   specified  expand  then  the  extra  width will be divided equally among all the left and
                   right windows that specified expand and the extra height will be  divided  equally  among
                   all the top and bottom windows that specified expand.

       If the desired width or height for a parcel is larger than the corresponding dimension of the cavity,
       then the cavity's dimension is used instead.

       The third step in placing the window is to decide on the window's width and height.  The  default  is
       for the window to receive either its requested width and height or the those of the parcel, whichever
       is smaller.  If the parcel is larger than the window's requested size, then the following options may
       be used to expand the window to partially or completely fill the parcel:

       fill   Set the window's size to equal the parcel size.

       fillx  Increase  the  window's  width  to equal the parcel's width, but retain the window's requested
              height.

       filly  Increase the window's height to equal the parcel's height, but retain the  window's  requested
              width.

       The  last step is to decide the window's location within its parcel.  If the window's size equals the
       parcel's size, then the window simply fills the entire parcel.  If the parcel is larger than the win-dow, window,
       dow,  then  one of the following options may be used to specify where the window should be positioned
       within its parcel:

       frame center   Center the window in its parcel.  This is the default if no framing option  is  speci-fied. specified.
                      fied.

       frame n        Position the window with its top edge centered on the top edge of the parcel.

       frame ne       Position  the window with its upper-right corner at the upper-right corner of the par-cel. parcel.
                      cel.

       frame e        Position the window with its right edge centered on the right edge of the parcel.

       frame se       Position the window with its lower-right corner at the lower-right corner of the  par-cel. parcel.
                      cel.

       frame s        Position the window with its bottom edge centered on the bottom edge of the parcel.

       frame sw       Position the window with its lower-left corner at the lower-left corner of the parcel.

       frame w        Position the window with its left edge centered on the left edge of the parcel.

       frame nw       Position the window with its upper-left corner at the upper-left corner of the parcel.

       The  packer  manages  the mapped/unmapped state of all the packed children windows.  It automatically
       maps the windows when it packs them, and it unmaps any windows for which there was no space  left  in
       the cavity.

       The  packer makes geometry requests on behalf of the parent windows it manages.  For each parent win-dow window
       dow it requests a size large enough to accommodate all the options specified by all the packed  chil-dren, children,
       dren, such that zero space would be leftover for expand options.


KEYWORDS
       geometry manager, location, packer, parcel, size



Tk                                                   4.0                                         pack-old(n)