User Interface [ ALLBASE/SQL Performance Guidelines ] MPE/iX 5.0 Documentation
ALLBASE/SQL Performance Guidelines
User Interface
The user interface consists of a main form which is a single table. The
rows of the table contain all the fields of the employee record. All the
fields are protected (i.e., display-only). Seven function keys are
defined:
* SELECT, which causes display of a popup form asking for the
department number. This popup form itself has two function keys:
OK and CANCEL. CANCEL cancels the SELECT and makes the popup
form disappear. OK selects the employees in the specified
department and displays the rows in the main form after the popup
form disappears.
* CURSOR_UP and CURSOR_DOWN, which position the cursor on the
desired row in the table.
* PAGE_UP and PAGE_DOWN, which position the display table on the
previous or next page of rows.
* DELETE, which deletes the current row. The row disappears from
the table, and all the following rows are shifted up by one. A
new row fills in the bottom of the table on the screen.
* UPDATE, which causes display of a popup form asking for the new
values for the row. The popup form itself has two function keys:
OK and CANCEL. CANCEL cancels the UPDATE and makes the popup
form disappear. OK updates the employee specified and displays
the rows in the main form after the popup form disappears. If the
department number has not been changed, the new value of the row
is displayed under the cursor; otherwise, the screen is handled as
in the case of deletions.
MPE/iX 5.0 Documentation