The TableHeader element specifies a header in a Maplet application table. The contents of each column in the header are defined by using the TableItem element.

Note: The table header is displayed only if the table is specified in a scroll pane, that is, a BoxCell or GridCell element with the 'vscroll' = 'as_needed' option. Otherwise, the header is not displayed. To construct a table with no header, specify a header, but do not place the table in a scroll pane.

A TableHeader element can contain TableItem elements.

Note: The number of columns in the header must equal the number of columns in each row.  A TableItem in a TableHeader cannot span multiple columns.

A TableHeader element can be contained in a Table element.

$\mathrm{with}\left(\mathrm{Maplets}\left[\mathrm{Elements}\right]\right)\:$

$\mathrm{maplet}≔\mathrm{Maplet}\left(\left[\mathrm{BoxCell}\left(\mathrm{Table}\left(\mathrm{TableHeader}\left(\mathrm{TableItem}\left(A\right)\,\mathrm{TableItem}\left(B\right)\right)\,\mathrm{TableRow}\left(\mathrm{TableItem}\left('\mathrm{caption}'=1\right)\,\mathrm{TableItem}\left('\mathrm{caption}'=2\right)\right)\,\mathrm{TableRow}\left(\mathrm{TableItem}\left('\mathrm{caption}'=3\right)\,\mathrm{TableItem}\left('\mathrm{caption}'=4\right)\right)\right)\,'\mathrm{as\_needed}'\right)\,\mathrm{Button}\left(''OK''\,\mathrm{Shutdown}\left(\right)\right)\right]\right)\:$

$\mathrm{Maplets}\left[\mathrm{Display}\right]\left(\mathrm{maplet}\right)$

$\mathrm{with}\left(\mathrm{Maplets}\left[\mathrm{Elements}\right]\right)\:$

$\mathrm{maplet}≔\mathrm{Maplet}\left(\left[\mathrm{BoxCell}\left(\mathrm{Table}\left(\left[A\,B\right]\,\left[\left[1\,2\right]\,\left[3\,4\right]\right]\right)\,'\mathrm{as\_needed}'\right)\,\mathrm{Button}\left(''OK''\,\mathrm{Shutdown}\left(\right)\right)\right]\right)\:$

$\mathrm{Maplets}\left[\mathrm{Display}\right]\left(\mathrm{maplet}\right)$