Rendering an HBox as a split view

Achieve a split view display with HBOX container and style attribute.

By defining a TABLE and a GRID container in a parent HBOX container, it is possible to get a splitview display by setting the splitViewRendering style attribute of the HBox class. When using this style attribute, the TABLE displays as a listview on the left of the screen, while the GRID displays as a form on the right.

First define a form with the HBOX container, TABLE and GRID. In the code example below, the HBOX container gets a STYLE attribute referencing a style named "splitview" in the .4st file:

LAYOUT
HBOX (STYLE="splitview")
TABLE
{
[c1  |c2          ]
[c1  |c2          ]
[c1  |c2          ]
[c1  |c2          ]
}
END
GRID
{
First name:   [f1                  ]
Last name:    [f2                  ]
...
}
END
END
...

The .4st file should look like follows:

<StyleList>
  <Style name="HBox.mystyle">
     <StyleAttribute name="splitViewRendering" value="yes" />
  </Style>
  ...
</StyleList>

The program must implement a dialog that handles both parts of the splitview. You typically implement a DISPLAY ARRAY to handle the TABLE, and refresh the right part of the screen contained in the GRID, with code in the BEFORE ROW control block:

DISPLAY ARRAY arr TO sr.*
    BEFORE ROW
      DISPLAY arr[arr_curr()].first_name TO f_first_name
      DISPLAY arr[arr_curr()].last_name TO f_last_name
END DISPLAY