Listbox Commands
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#xcommand @ <nRow>, <nCol> LISTBOX [ <oLbx> VAR ] <cnVar> ;
             [ <items: ITEMS, PROMPTS> <aList>  ] ;
             [ SIZE <nWidth>, <nHeight> ] ;
             [ ON CHANGE <uChange> ] ;
             [ ON [ LEFT ] DBLCLICK <uLDblClick> ] ;
             [ <of: OF, WINDOW, DIALOG > <oWnd> ] ;
             [ VALID <uValid> ] ;
             [ <color: COLOR,COLORS> <nClrFore> [,<nClrBack>] ] ;
             [ <pixel: PIXEL> ] ;
             [ <design: DESIGN> ] ;
             [ FONT <oFont> ] ;
             [ MESSAGE <cMsg> ] ;
             [ <update: UPDATE> ] ;
             [ WHEN <uWhen> ] ;
             [ BITMAPS <aBitmaps> ] ;
             [ ON DRAWITEM <uBmpSelect> ] ;
             [ <multi: MULTI, MULTIPLE, MULTISEL> ] ;
             [ <sort: SORT> ] ;
       => ;
          [ <oLbx> := ] TListBox():New( <nRow>, <nCol>, bSETGET(<cnVar>),;
             <aList>, <nWidth>, <nHeight>, <{uChange}>, <oWnd>, <{uValid}>,;
             <nClrFore>, <nClrBack>, <.pixel.>, <.design.>, <{uLDblClick}>,;
             <oFont>, <cMsg>, <.update.>, <{uWhen}>, <aBitmaps>,;
             [{|nItem|<uBmpSelect>}], <.multi.>, <.sort.> )



#xcommand REDEFINE LISTBOX [ <oLbx> VAR ] <cnVar> ;
             [ <items: ITEMS, PROMPTS> <aItems> ]  ;
             [ <files: FILES, FILESPEC> <cFileSpec> ] ;
             [ ID <nId> ] ;
             [ ON CHANGE <uChange,...> ] ;
             [ ON [ LEFT ] DBLCLICK <uLDblClick> ] ;
             [ <of: OF, WINDOW, DIALOG > <oWnd> ] ;
             [ <help:HELPID, HELP ID> <nHelpId> ] ;
             [ VALID <uValid> ] ;
             [ <color: COLOR,COLORS> <nClrFore> [,<nClrBack>] ] ;
             [ MESSAGE <cMsg> ] ;
             [ <update: UPDATE> ] ;
             [ WHEN <uWhen> ] ;
             [ BITMAPS <acBitmaps> ] ;
             [ ON DRAWITEM <uBmpSelect> ] ;
       => ;
          [ <oLbx> := ] TListBox():ReDefine( <nId>, bSETGET(<cnVar>), <aItems>,;
             [\{||<uChange>\}], <oWnd>, <nHelpId>, <acBitmaps>,;
             <{uValid}>, <cFileSpec>, <nClrFore>, <nClrBack>,;
             <{uLDblClick}>, <cMsg>, <.update.>, <{uWhen}>,;
             [{|nItem|<uBmpSelect>}] )