This is process may take a few seconds, particularly with very large menus, and the MENU CALC command is designed to perform this recalculation at the most suitable point in the program, in order to minimise any delays.
You are advised to freeze your menus with MENU OFF at the start of the recalculation procedure, to prevent the user calling the menu half way through an update. It may then be made active again using MENU ON after the updating process is over.
Alternative menu styles
The AMOS Professional programmer is free to change the display format of any level of any
menu, and design a customised layout. As a default, all titles are displayed in a horizontal bar
with their related options arranged below in a vertical block. Here are the alternatives:
MENU LINE
instruction: display menu options as a horizontal line
Menu Line level number
Menu Line (single item parameters)
Use this command to change the display of options that relate to a particular title from a vertical block into a horizontal line. The line of options will now start from the left-hand corner of the first menu title and stretch to the bottom right-hand corner of the last title. Follow MENU LINE with the number of the level you want to affect, and make sure that this command is only called during your menu definitions. The level number can range from 1 to 8, and it specifies the layer of the menu to be affected.
It is perfectly legal to set individual items by this method, and with the following MENU TLINE and MENU BAR commands. This can result in some highly eccentric displays.
X> Menu Line(1,1,1) : Rem Display sub-option 1,1,1 as a line
MENU TLINE
instruction: display a menu as a total line
Menu Tline level number
Menu Tline(single item parameters)
MENU TUNE is used to display a section of your menu as a total line, stretching from the extreme left to the extreme right of the screen. The complete line will be drawn even if the first item is centre screen. Use this instruction in the same way as MENU LINE during your menu definitions.
MENU BAR
instruction: display menu items as a vertical bar
Menu Bar level number
Menu Bar(single item parameters)