MENU FROM

MENU FROM

Class

Menus

Purpose

Display a framed menu of options from a database table file

Syntax

MENU FROM <mdf filename> | (<expC1>)

AT <expN1>,<expN2> TO <expN3>,<expN4>

[BOLD]

[CLEAR]

[EXIT]

[HELPFILE <hlp filename> | (<expC2>)]

[LABEL <expC3>]

[NOREFRESH]

[OFF]

[QUIT]

[SELECT <expC4>]

See Also

@...MENU, MENU AT, MENU COMMAND, MENU FIELDS, MENU FILES, MENU FORMAT, MENU QUERY, MENU SCOPE, MENU(), MENUITEM()

Description

The MENU FROM command uses the entries in a standard Recital table (but with a .mdf filename) to construct a framed menu of options. The filename can be substituted with a <expC1>, enclosed in round brackets, which returns a valid filename. The table has an extension of .mdf and must have the following structure:

Field	Type	Width
MENU	Character	25
COMMAND	Character	80
HELP	Character	80
NOREFRESH	Logical	1

Each record in the database is equivalent to a command in the from: @…MENU <item> COMMAND <command> HELP <help> [NOREFRESH]. When a menu is activated from an <.mdf filename> the items in the database are vertically scrollable as with the MENU FILES command. The command list specified with a menu item can be another MENU FROM command, or a DO <procedure> command which activates another menu using any of the set of menu commands available in the Recital 4GL.

AT <expN1>,<expN2> TO <expN3>,<expN4>

The upper left corner of the menu is positioned on the coordinates <expN1> and <expN2>, and the lower right corner of the menu is positioned on the coordinates <expN3> and <expN4>.

Keyword	Description
BOLD	The menu frame is highlighted.
CLEAR	The inside of the menu frame is cleared before displaying the menu.
EXIT	The menu is exited following selection of a menu item and execution of the associated commands.. If the NOEXIT command is executed as one of the commands associated with a menu item, then the menu will not be exited.
HELPFILE <.hlp>	A helpful text file can be associated with the menu. The <.hlp filename> will be displayed in a read-only window for viewing when the [HELP] key is pressed. The window will be labeled "Operating instructions." The file name can be substituted with a <expC2>, enclosed in round brackets, which returns a valid filename. If no file extension is specified, then ".hlp" is assumed. The command, INSTRUCT, must be set ON when using this option.
LABEL <expC3>	The specified character string <expC3> is displayed at the top of the menu frame.
NOREFRESH	The menu is generated without executing the extra commands (e.g. frame drawing) associated with it.
OFF	The display of messages in the message line is disabled.
QUIT	When the QUIT option is specified, the [ABANDON] key exits the menu.
SELECT <expC4>	Multiple selections can be made. The MENUITEM() function can be used to return a string containing the selections made, each separated with <expC4>. Selections are made by placing the cursor on the required menu item and pressing the [RETURN] key. Once all the required selections have been made, the [EXIT/SAVE] key is used to save them or the [ABANDON] key will cancel them. The ASTORE() function can be used to place all the selections into separate array items.

Example

create menufile
rename menufile.dbf menufile.mdf
menu from menufile at 1,35 to 10,45 label "Options"

Products

Recital Mirage Server, Recital Terminal Developer