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Class java.awt.MenuComponent
java.lang.Object
|
+----java.awt.MenuComponent
- public abstract class MenuComponent
- extends Object
- implements Serializable
- super class of:
- MenuBar, MenuItem
The abstract class MenuComponent
is the superclass
of all menu-related components. In this respect, the class
MenuComponent
is analogous to the abstract superclass
Component
for AWT components.
Menu components receive and process AWT events, just as components do,
through the method processEvent
.
-
MenuComponent()
-
-
dispatchEvent(AWTEvent)
-
-
getFont()
- Gets the font used for this menu component.
-
getName()
- Gets the name of the menu component.
-
getParent()
- Returns the parent container for this menu component.
-
getPeer()
-
Deprecated.
-
getTreeLock()
- Gets this component's locking object (the object that owns the thread
sychronization monitor) for AWT component-tree and layout
operations.
-
paramString()
- Returns the parameter string representing the state of this
menu component.
-
postEvent(Event)
- Posts the specified event to the menu.
Deprecated.
-
processEvent(AWTEvent)
-
Processes events occurring on this menu component.
-
removeNotify()
- Removes the menu component's peer.
-
setFont(Font)
- Sets the font to be used for this menu component to the specified
font.
-
setName(String)
- Sets the name of the component to the specified string.
-
toString()
- Returns a representation of this menu component as a string.
MenuComponent
public MenuComponent()
getName
public String getName()
- Gets the name of the menu component.
- Returns:
- the name of the menu component.
- See Also:
- setName
setName
public void setName(String name)
- Sets the name of the component to the specified string.
- Parameters:
- name - the name of the menu component.
- See Also:
- getName
getParent
public MenuContainer getParent()
- Returns the parent container for this menu component.
- Returns:
- the menu component containing this menu component,
or
null
if this menu component
is the outermost component, the menu bar itself.
getPeer
public MenuComponentPeer getPeer()
- Note: getPeer() is deprecated.
As of JDK version 1.1,
programs should not directly manipulate peers.
getFont
public Font getFont()
- Gets the font used for this menu component.
- Returns:
- the font used in this menu component, if there is one;
null
otherwise.
- See Also:
- setFont
setFont
public void setFont(Font f)
- Sets the font to be used for this menu component to the specified
font. This font is also used by all subcomponents of this menu
component, unless those subcomponents specify a different font.
- Parameters:
- f - the font to be set.
- See Also:
- getFont
removeNotify
public void removeNotify()
- Removes the menu component's peer. The peer allows us to modify the
appearance of the menu component without changing the functionality of
the menu component.
postEvent
public boolean postEvent(Event evt)
- Note: postEvent() is deprecated.
As of JDK version 1.1,
replaced by
dispatchEvent(AWTEvent)
.
- Posts the specified event to the menu.
This method is part of the Java 1.0 event system
and it is maintained only for backwards compatibility.
Its use is discouraged, and it may not be supported
in the future.
- Parameters:
- evt - the event which is to take place
dispatchEvent
public final void dispatchEvent(AWTEvent e)
processEvent
protected void processEvent(AWTEvent e)
- Processes events occurring on this menu component.
- Parameters:
- e - the event
paramString
protected String paramString()
- Returns the parameter string representing the state of this
menu component. This string is useful for debugging.
- Returns:
- the parameter string of this menu component.
toString
public String toString()
- Returns a representation of this menu component as a string.
- Returns:
- a string representation of this menu component.
- Overrides:
- toString in class Object
getTreeLock
protected final Object getTreeLock()
- Gets this component's locking object (the object that owns the thread
sychronization monitor) for AWT component-tree and layout
operations.
- Returns:
- This component's locking object.
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