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       LDos V1(3) for AMOS1.3 and above.
       LDos is (C) Niklas Sjöberg 1992
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                   PART FOUR - Filerequester
                   -------------------------

    Lfreq - Bring up the filerequester.
    A$=Lfreq("Title",FLAGS)

    where

       A$ will contain the full path and filename after the call.  If
    the  user  clicked  cancel, A$ will be empty. "Title" is the text
    you want as a headline in the requester fx. "Load  an  IFF-file".
    FLAGS  decides  how  the  requester  will  act. Every function is
    assigned to a bit, and here are  their  values  (to  choose  many
    options, just add the values, fx. FLAGS=$2+$4+$1000)

    $1  -   Show .info-files. Hidden otherwise
    $2  -   Extended select. Not supported by Ldos.
    $4  -   Dir cache. The  latest used directory will be
            remembered so it won't have to be read again at
            the next call.
*-  $8  -   Bring up font requester. Supported in V2 and above.
*-          Use Lfontsize Freq to get hold of the size of the
*-          font. A$ will contain the full path and name of the
*-          font and you may thus let the user select a font from
*-          any path and then load it using Ldisk Font. HINT, use
*-          Lget Freq Dir to mask out everything except the font-
*-          name if you intend to use Get Rom Fonts. See the inc-
*-          luded example Lfonts for more hints.
    $10 -   Create a hide-'.info'-gadget
    $20 -   Do not create any hide- and showgadgets
    $40 -   Use absolute x,y for the requester. Otherwise it
            is placed directly under the mousepointer. (x and
            y are hard-coded to the upper left on the screen)
*-          Version 2 and higher allows re-position of the re-
*-          quester if $40-flag is used.
    $80 -   Purge cache whenever the datestamp of the directory
            changes (in other words, re-read the directory
            whenever it is changed)
    $100 -  Don't cache anything until the whole directory is
            read.
    $200 -  Do not sort the files.
    $400 -  Do not create a scrollbar.
    $800 -  Used when choosing a file to save. Currently it have
            no function, but are reserved for future use.
    $1000 - Used when choosing a file to load. Currently it have
            no function, but are reserved for future use.
    $2000 - Let the user select directories only, does not
            display any files at all.

       You should ALWAYS set $800 or $1000 depending on  if  you  are
    going to load or save a file.

    Lget Freq Dir - Get only the path which the user picked the
                    last time the filerequester was used.
    A$=Lget Freq Dir

    where

       A$ will hold the LAST selected dir. A$ will NOT be empty  even
     if  the  user clicked  CANCEL  and something  has  been selected
     through the filerequester before.

    Lget Freq File - Get only the filename which the user picked the
                     last time the filerequester was active.
    A$=Lget Freq File

    where

       A$ will hold the LAST selected file. A$ will NOT empty even if
    the  user   clicked  CANCEL,  and  something  has  been  selected
    through the filerequester before.

    Lset Freq Dir - Set the default (current) directory for the
                    filerequester.
    Lset Freq Dir "Path"

    where

       If you haven't set  path,  the  filerequester  will  use  your
    programs  current  directory. Whenever the user changes directory
    it will be remembered by Ldos. This path does not  affect  AMOS's
    (Dir$) path in any way.

*-  Lpos Freq - Change the hardcoded X and Y position of the requester.
*-  Lpos Freq X,Y

*-  where

*-     X and Y are specified in pixels. These positions will only  be
*-  used  if  the $40-flag is specified, otherwise the requester pops
*-  up at the mousepointer. Default positions are 3,11.

*-  Lcust Freq - Change size of the requester's fields.
*-  Lcust Freq DEVWIDTH,FILEWIDTH,FILES

*-  where

*-     DEVWIDTH specifies how many characters  wide  the  devicefield
*-  will  be,  FILEWIDTH  does the same but affect the file-name/size
*-  window. FILES specifies how many files/dir that will be displayed
*-  (height). Default values are 12,30,14.

*-  Lfontsize Freq - Return the fontsize when the requester has been
*-  in font-mode.
*-  S=Lfontsize Freq

*-  where

*-     S contains the fontsize of the last  chosen  font.  Note  that
*-  you must set the filerequester to font-mode ($8-flag) in order to
*-  update this  field. Currently the req.library doesn't support CG-
*-  fonts.  Hopefully  there  will be a new version out soon (when/if
*-  CED V3 is coming?)

CONTINUED IN NEXT ARTICLE.