NAME¶
Menu, MenuItem, MenuBar, PopupMenu, PulldownMenu, PullrightMenu - menus
SYNOPSIS¶
#include <InterViews/menu.h>
DESCRIPTION¶
N.B.: This Menu class is completely different from the Menu class in version
2.5. No attempt has been made to be compatible, as this class and its
subclasses are more powerful and easier to use than the original class.
Menu is a subclass of Control that contains a scene of other controls, called
its body. When a menu is opened, it inserts the body into the world with a
drop shadow. The appearance of the menu itself is defined by its interactor
component. For example, a menu in a menu bar might appear as ``File'' and
insert a pulldown menu with commands such as ``Save'' when opened.
MenuItem is a subclass of Control for defining the leaves of a menu hierarchy.
Normally, an application will derive a command class from MenuItem and
implement the virtual function Do as appropriate. One technique is to pass the
Command an application object and pointer to member function; the Do function
calls the member function on the application object.
PopupMenu, PulldownMenu, and PullrightMenu are subclasses of Menu that implement
a common styles of menus. MenuBar is a subclass of HBox that manages the
control state associated with a set of menus. PopupMenu has no appearance; it
is opened explicitly in response to an input event. PulldownMenu and
PullrightMenu open the menu body below and to the right of the menu,
respectively. These classes make it possible to use menus in an application
without creating or passing control states explicitly.
PUBLIC OPERATIONS¶
- Menu::Menu(Interactor*)
- Construct a new menu.
- Menu::~Menu()
- The destructor deletes the menu body in addition to its appearance
component.
- virtual void Menu::Include(Control*)
- Add an item to the menu. If no scene is specified, Menu will create a vbox
and insert items into it.
- virtual void Menu::Popup(Event&)
- Insert the body into the world centered around the coordinates associated
with the event and activate the controls in the body. The menu is removed
from the world when the controls are deactivated (normally when a button
is released).
- void Menu::SetBody(Interactor*)
- Interactor* Menu::GetBody()
- void Menu::SetAlign(Alignment)
- Alignment Menu::GetAlign()
- void Menu::SetDepth(int)
- int GetDepth()
- void Menu::SetBodyState(ControlState*)
- ControlState* Menu::GetBodyState()
- void Menu::SetScene(Scene*)
- Scene* Menu::GetScene()
- Set or get attributes of the menu. The depth of a menu is the number of
pixels separating the body and the drop shadow.
- Coord Menu::InsertX()
- Coord Menu::InsertY()
- Return the coordinates where the menu's body was last inserted into the
world.
- MenuItem::MenuItem(Interactor*)
- MenuItem::MenuItem(const char* str, Alignment = Left)
- Construct a new menu item. The second constructor defines the appearance
of the item to be a message containing the text in str.
- PulldownMenu::PulldownMenu(Interactor*)
- PulldownMenu::PulldownMenu(const char* str)
- PullrightMenu::PullrightMenu(Interactor*)
- PullrightMenu::PullrightMenu(const char* str)
- Construct a new pulldown or pullright menu. The second constructor defines
the appearance of the menu to be a message containing the text in
str.
- PopupMenu::PopupMenu()
- Construct a new popup menu.
- MenuBar::MenuBar()
- Construct a new menu bar.
- virtual void MenuBar::Include(Control*)
- Add a control to a menu bar. In addition to inserting the control into the
bar's hbox, this operation attaches the control to the bar's control
state.
SEE ALSO¶
Control(3I), Event(3I)