User Menus under Windows
Enables users to add, delete and program menus under Windows.
winMenuAdd(menuname) winMenuAddItem(menuname, itemname, action) winMenuDel(menuname) winMenuDelItem(menuname, itemname) winMenuNames() winMenuItems(menuname)
- a character string naming a menu.
- a character string naming a menu item on an existing menu.
- a character string describing the action when that menu
is selected, or
User menus are added to the right of existing menus, and items are
added at the bottom of the menu. By default the action character string is treated as R input, being
echoed on the command line and parsed and executed as usual. If the
menuname parameter of
winMenuAddItem does not
already exist, it will be created automatically. Normally new submenus and menu items are added to the main console
menu. They may be added elsewhere using the following special names:
- The console menu (the default)
- The console popup menu
- The menu for graphics window
- The popup menu for graphics window
winMenuAddItemenables the action to be changed. Submenus can be specified by separating the elements in
menunameby slashes: as a consequence menu names may not contain slashes. If the
actionis specified as
"none"no action is taken: this can be useful to reserve items for future expansion. The function
winMenuNamescan be used to find out what menus have been created by the user and returns a vector of the existing menu names. The
winMenuItemsfunction will take the name of a menu and return the items that exist in that menu. The return value is a named vector where the names correspond to the names of the items and the values of the vector are the corresponding actions. The
winMenuDelfunction will delete a menu and all of its items and submenus.
winMenuDelItemjust deletes one menu item. The total path to an item (menu string plus item string) cannot exceed 1000 bytes, and the menu string cannot exceed 500 bytes.
NULL, invisibly. If an error occurs, an informative error
message will be given.
These functions are only available on Windows.