| JavaTM 2 Platform Std. Ed. v1.6.0
java.awt
Class Window
java.lang.Object
java.awt.Component
java.awt.Container
java.awt.Window
- All Implemented Interfaces:
- ImageObserver, MenuContainer, Serializable, Accessible
- Direct Known Subclasses:
- BasicToolBarUI.DragWindow, Dialog, Frame, JWindow
public class Window - extends Container
- implements Accessible
A Window object is a top-level window with no borders and no
menubar.
The default layout for a window is BorderLayout.
A window must have either a frame, dialog, or another window defined as its
owner when it's constructed.
In a multi-screen environment, you can create a Window
on a different screen device by constructing the Window
with Window(Window, GraphicsConfiguration). The
GraphicsConfiguration object is one of the
GraphicsConfiguration objects of the target screen device.
In a virtual device multi-screen environment in which the desktop
area could span multiple physical screen devices, the bounds of all
configurations are relative to the virtual device coordinate system.
The origin of the virtual-coordinate system is at the upper left-hand
corner of the primary physical screen. Depending on the location of
the primary screen in the virtual device, negative coordinates are
possible, as shown in the following figure.
In such an environment, when calling setLocation,
you must pass a virtual coordinate to this method. Similarly,
calling getLocationOnScreen on a Window returns
virtual device coordinates. Call the getBounds method
of a GraphicsConfiguration to find its origin in the virtual
coordinate system.
The following code sets the location of a Window
at (10, 10) relative to the origin of the physical screen
of the corresponding GraphicsConfiguration. If the
bounds of the GraphicsConfiguration is not taken
into account, the Window location would be set
at (10, 10) relative to the virtual-coordinate system and would appear
on the primary physical screen, which might be different from the
physical screen of the specified GraphicsConfiguration.
Window w = new Window(Window owner, GraphicsConfiguration gc);
Rectangle bounds = gc.getBounds();
w.setLocation(10 + bounds.x, 10 + bounds.y);
Note: the location and size of top-level windows (including
Windows, Frames, and Dialogs)
are under the control of the desktop's window management system.
Calls to setLocation, setSize, and
setBounds are requests (not directives) which are
forwarded to the window management system. Every effort will be
made to honor such requests. However, in some cases the window
management system may ignore such requests, or modify the requested
geometry in order to place and size the Window in a way
that more closely matches the desktop settings.
Due to the asynchronous nature of native event handling, the results
returned by getBounds, getLocation,
getLocationOnScreen, and getSize might not
reflect the actual geometry of the Window on screen until the last
request has been processed. During the processing of subsequent
requests these values might change accordingly while the window
management system fulfills the requests.
An application may set the size and location of an invisible
Window arbitrarily, but the window management system may
subsequently change its size and/or location when the
Window is made visible. One or more ComponentEvents
will be generated to indicate the new geometry.
Windows are capable of generating the following WindowEvents:
WindowOpened, WindowClosed, WindowGainedFocus, WindowLostFocus.
- Since:
- JDK1.0
- See Also:
WindowEvent,
addWindowListener(java.awt.event.WindowListener),
BorderLayout,
Serialized Form
|
Constructor Summary |
Window(Frame owner)
Constructs a new, initially invisible window with the specified
Frame as its owner. |
Window(Window owner)
Constructs a new, initially invisible window with the specified
Window as its owner. |
Window(Window owner,
GraphicsConfiguration gc)
Constructs a new, initially invisible window with the specified owner
Window and a GraphicsConfiguration
of a screen device. |
|
Method Summary |
void |
addNotify()
Makes this Window displayable by creating the connection to its
native screen resource. |
void |
addPropertyChangeListener(PropertyChangeListener listener)
Adds a PropertyChangeListener to the listener list. |
void |
addPropertyChangeListener(String propertyName,
PropertyChangeListener listener)
Adds a PropertyChangeListener to the listener list for a specific
property. |
void |
addWindowFocusListener(WindowFocusListener l)
Adds the specified window focus listener to receive window events
from this window. |
void |
addWindowListener(WindowListener l)
Adds the specified window listener to receive window events from
this window. |
void |
addWindowStateListener(WindowStateListener l)
Adds the specified window state listener to receive window
events from this window. |
void |
applyResourceBundle(ResourceBundle rb)
Deprecated. As of J2SE 1.4, replaced by
Component.applyComponentOrientation. |
void |
applyResourceBundle(String rbName)
Deprecated. As of J2SE 1.4, replaced by
Component.applyComponentOrientation. |
void |
createBufferStrategy(int numBuffers)
Creates a new strategy for multi-buffering on this component. |
void |
createBufferStrategy(int numBuffers,
BufferCapabilities caps)
Creates a new strategy for multi-buffering on this component with the
required buffer capabilities. |
void |
dispose()
Releases all of the native screen resources used by this
Window, its subcomponents, and all of its owned
children. |
AccessibleContext |
getAccessibleContext()
Gets the AccessibleContext associated with this Window. |
BufferStrategy |
getBufferStrategy()
Returns the BufferStrategy used by this component. |
boolean |
getFocusableWindowState()
Returns whether this Window can become the focused Window if it meets
the other requirements outlined in isFocusableWindow. |
Container |
getFocusCycleRootAncestor()
Always returns null because Windows have no ancestors; they
represent the top of the Component hierarchy. |
Component |
getFocusOwner()
Returns the child Component of this Window that has focus if this Window
is focused; returns null otherwise. |
Set<AWTKeyStroke> |
getFocusTraversalKeys(int id)
Gets a focus traversal key for this Window. |
GraphicsConfiguration |
getGraphicsConfiguration()
This method returns the GraphicsConfiguration used by this Window. |
List<Image> |
getIconImages()
Returns the sequence of images to be displayed as the icon for this window. |
InputContext |
getInputContext()
Gets the input context for this window. |
|
getListeners(Class<T> listenerType)
Returns an array of all the objects currently registered
as FooListeners
upon this Window. |
Locale |
getLocale()
Gets the Locale object that is associated
with this window, if the locale has been set. |
Dialog.ModalExclusionType |
getModalExclusionType()
Returns the modal exclusion type of this window. |
Component |
getMostRecentFocusOwner()
Returns the child Component of this Window that will receive the focus
when this Window is focused. |
Window[] |
getOwnedWindows()
Return an array containing all the windows this
window currently owns. |
Window |
getOwner()
Returns the owner of this window. |
static Window[] |
getOwnerlessWindows()
Returns an array of all Windows created by this application
that have no owner. |
Toolkit |
getToolkit()
Returns the toolkit of this frame. |
String |
getWarningString()
Gets the warning string that is displayed with this window. |
WindowFocusListener[] |
getWindowFocusListeners()
Returns an array of all the window focus listeners
registered on this window. |
WindowListener[] |
getWindowListeners()
Returns an array of all the window listeners
registered on this window. |
static Window[] |
getWindows()
Returns an array of all Windows, both owned and ownerless,
created by this application. |
WindowStateListener[] |
getWindowStateListeners()
Returns an array of all the window state listeners
registered on this window. |
void |
hide()
Deprecated. As of JDK version 1.5, replaced by
setVisible(boolean). |
boolean |
isActive()
Returns whether this Window is active. |
boolean |
isAlwaysOnTop()
Returns whether this window is an always-on-top window. |
boolean |
isAlwaysOnTopSupported()
Returns whether the always-on-top mode is supported for this
window. |
boolean |
isFocusableWindow()
Returns whether this Window can become the focused Window, that is,
whether this Window or any of its subcomponents can become the focus
owner. |
boolean |
isFocusCycleRoot()
Always returns true because all Windows must be roots of a
focus traversal cycle. |
boolean |
isFocused()
Returns whether this Window is focused. |
boolean |
isLocationByPlatform()
Returns true if this Window will appear at the default location
for the native windowing system the next time this Window is made visible. |
boolean |
isShowing()
Checks if this Window is showing on screen. |
void |
pack()
Causes this Window to be sized to fit the preferred size
and layouts of its subcomponents. |
boolean |
postEvent(Event e)
Deprecated. As of JDK version 1.1
replaced by dispatchEvent(AWTEvent). |
protected void |
processEvent(AWTEvent e)
Processes events on this window. |
protected void |
processWindowEvent(WindowEvent e)
Processes window events occurring on this window by
dispatching them to any registered WindowListener objects. |
protected void |
processWindowFocusEvent(WindowEvent e)
Processes window focus event occuring on this window by
dispatching them to any registered WindowFocusListener objects. |
protected void |
processWindowStateEvent(WindowEvent e)
Processes window state event occuring on this window by
dispatching them to any registered WindowStateListener
objects. |
void |
removeNotify()
Makes this Container undisplayable by removing its connection
to its native screen resource. |
void |
removeWindowFocusListener(WindowFocusListener l)
Removes the specified window focus listener so that it no longer
receives window events from this window. |
void |
removeWindowListener(WindowListener l)
Removes the specified window listener so that it no longer
receives window events from this window. |
void |
removeWindowStateListener(WindowStateListener l)
Removes the specified window state listener so that it no
longer receives window events from this window. |
void |
reshape(int x,
int y,
int width,
int height)
Deprecated. As of JDK version 1.1,
replaced by setBounds(int, int, int, int). |
void |
setAlwaysOnTop(boolean alwaysOnTop)
Sets whether this window should always be above other windows. |
void |
setBounds(int x,
int y,
int width,
int height)
Moves and resizes this component. |
void |
setBounds(Rectangle r)
Moves and resizes this component to conform to the new
bounding rectangle r. |
void |
setCursor(Cursor cursor)
Set the cursor image to a specified cursor. |
void |
setFocusableWindowState(boolean focusableWindowState)
Sets whether this Window can become the focused Window if it meets
the other requirements outlined in isFocusableWindow. |
void |
setFocusCycleRoot(boolean focusCycleRoot)
Does nothing because Windows must always be roots of a focus traversal
cycle. |
void |
setIconImage(Image image)
Sets the image to be displayed as the icon for this window. |
void |
setIconImages(List<? extends Image> icons)
Sets the sequence of images to be displayed as the icon
for this window. |
void |
setLocationByPlatform(boolean locationByPlatform)
Sets whether this Window should appear at the default location for the
native windowing system or at the current location (returned by
getLocation) the next time the Window is made visible. |
void |
setLocationRelativeTo(Component c)
Sets the location of the window relative to the specified
component. |
void |
setMinimumSize(Dimension minimumSize)
Sets the minimum size of this window to a constant
value. |
void |
setModalExclusionType(Dialog.ModalExclusionType exclusionType)
Specifies the modal exclusion type for this window. |
void |
setSize(Dimension d)
Resizes this component so that it has width d.width
and height d.height. |
void |
setSize(int width,
int height)
Resizes this component so that it has width width
and height height. |
void |
setVisible(boolean b)
Shows or hides this Window depending on the value of parameter
b. |
void |
show()
Deprecated. As of JDK version 1.5, replaced by
setVisible(boolean). |
void |
toBack()
If this Window is visible, sends this Window to the back and may cause
it to lose focus or activation if it is the focused or active Window. |
void |
toFront()
If this Window is visible, brings this Window to the front and may make
it the focused Window. |
| Methods inherited from class java.awt.Container |
add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, transferFocusBackward, transferFocusDownCycle, update, validate, validateTree |
| Methods inherited from class java.awt.Component |
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resize, resize, setBackground, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setName, setPreferredSize, show, size, toString, transferFocus, transferFocusUpCycle |
Window
public Window(Frame owner)
- Constructs a new, initially invisible window with the specified
Frame as its owner. The window will not be focusable
unless its owner is showing on the screen.
If there is a security manager, this method first calls
the security manager's checkTopLevelWindow
method with this
as its argument to determine whether or not the window
must be displayed with a warning banner.
- Parameters:
owner - the Frame to act as owner or null
if this window has no owner
- Throws:
IllegalArgumentException - if the owner's
GraphicsConfiguration is not from a screen device
HeadlessException - when
GraphicsEnvironment.isHeadless returns true- See Also:
GraphicsEnvironment.isHeadless(),
SecurityManager.checkTopLevelWindow(java.lang.Object),
isShowing()
Window
public Window(Window owner)
- Constructs a new, initially invisible window with the specified
Window as its owner. This window will not be focusable
unless its nearest owning Frame or Dialog
is showing on the screen.
If there is a security manager, this method first calls
the security manager's checkTopLevelWindow
method with this
as its argument to determine whether or not the window
must be displayed with a warning banner.
- Parameters:
owner - the Window to act as owner or
null if this window has no owner
- Throws:
IllegalArgumentException - if the owner's
GraphicsConfiguration is not from a screen device
HeadlessException - when
GraphicsEnvironment.isHeadless() returns
true- Since:
- 1.2
- See Also:
GraphicsEnvironment.isHeadless(),
SecurityManager.checkTopLevelWindow(java.lang.Object),
isShowing()
Window
public Window(Window owner,
GraphicsConfiguration gc)
- Constructs a new, initially invisible window with the specified owner
Window and a GraphicsConfiguration
of a screen device. The Window will not be focusable unless
its nearest owning Frame or Dialog
is showing on the screen.
If there is a security manager, this method first calls
the security manager's checkTopLevelWindow
method with this
as its argument to determine whether or not the window
must be displayed with a warning banner.
- Parameters:
owner - the window to act as owner or null
if this window has no ownergc - the GraphicsConfiguration of the target
screen device; if gc is null,
the system default GraphicsConfiguration is assumed
- Throws:
IllegalArgumentException - if gc
is not from a screen device
HeadlessException - when
GraphicsEnvironment.isHeadless() returns
true- Since:
- 1.3
- See Also:
GraphicsEnvironment.isHeadless(),
SecurityManager.checkTopLevelWindow(java.lang.Object),
GraphicsConfiguration.getBounds(),
isShowing()
getIconImages
public List<Image> getIconImages()
- Returns the sequence of images to be displayed as the icon for this window.
This method returns a copy of the internally stored list, so all operations
on the returned object will not affect the window's behavior.
- Returns:
- the copy of icon images' list for this window, or
empty list if this window doesn't have icon images.
- Since:
- 1.6
- See Also:
setIconImages(java.util.List extends java.awt.Image>),
setIconImage(Image)
setIconImages
public void setIconImages(List<? extends Image> icons)
- Sets the sequence of images to be displayed as the icon
for this window. Subsequent calls to
getIconImages will
always return a copy of the icons list.
Depending on the platform capabilities one or several images
of different dimensions will be used as the window's icon.
The icons list is scanned for the images of most
appropriate dimensions from the beginning. If the list contains
several images of the same size, the first will be used.
Ownerless windows with no icon specified use platfrom-default icon.
The icon of an owned window may be inherited from the owner
unless explicitly overridden.
Setting the icon to null or empty list restores
the default behavior.
Note : Native windowing systems may use different images of differing
dimensions to represent a window, depending on the context (e.g.
window decoration, window list, taskbar, etc.). They could also use
just a single image for all contexts or no image at all.
- Parameters:
icons - the list of icon images to be displayed.- Since:
- 1.6
- See Also:
getIconImages(),
setIconImage(Image)
setIconImage
public void setIconImage(Image image)
- Sets the image to be displayed as the icon for this window.
This method can be used instead of setIconImages()
to specify a single image as a window's icon.
The following statement:
setIconImage(image);
is equivalent to:
ArrayList imageList = new ArrayList();
imageList.add(image);
setIconImages(imageList);
Note : Native windowing systems may use different images of differing
dimensions to represent a window, depending on the context (e.g.
window decoration, window list, taskbar, etc.). They could also use
just a single image for all contexts or no image at all.
- Parameters:
image - the icon image to be displayed.- Since:
- 1.6
- See Also:
setIconImages(java.util.List extends java.awt.Image>),
getIconImages()
addNotify
public void addNotify()
- Makes this Window displayable by creating the connection to its
native screen resource.
This method is called internally by the toolkit and should
not be called directly by programs.
- Overrides:
addNotify in class Container
- Since:
- JDK1.0
- See Also:
Component.isDisplayable(),
Container.removeNotify()
removeNotify
public void removeNotify()
- Makes this Container undisplayable by removing its connection
to its native screen resource. Making a container undisplayable
will cause all of its children to be made undisplayable.
This method is called by the toolkit internally and should
not be called directly by programs.
- Overrides:
removeNotify in class Container
- See Also:
Component.isDisplayable(),
Container.addNotify()
pack
public void pack()
- Causes this Window to be sized to fit the preferred size
and layouts of its subcomponents. If the window and/or its owner
are not yet displayable, both are made displayable before
calculating the preferred size. The Window will be validated
after the preferredSize is calculated.
- See Also:
Component.isDisplayable()
setMinimumSize
public void setMinimumSize(Dimension minimumSize)
- Sets the minimum size of this window to a constant
value. Subsequent calls to
getMinimumSize
will always return this value. If current window's
size is less than minimumSize the size of the
window is automatically enlarged to honor the minimum size.
If the setSize or setBounds methods
are called afterwards with a width or height less than
that specified by setMinimumSize the window
is automatically enlarged to honor the minimumSize
value. Setting the minimum size to null restores
the default behavior.
Resizing operation may be restricted if the user tries
to resize window below the minimumSize value.
This behaviour is platform-dependent.
- Overrides:
setMinimumSize in class Component
- Parameters:
minimumSize - the new minimum size of this window- Since:
- 1.6
- See Also:
Component.setMinimumSize(java.awt.Dimension),
Container.getMinimumSize(),
Component.isMinimumSizeSet(),
setSize(Dimension)
setSize
public void setSize(Dimension d)
- Resizes this component so that it has width
d.width
and height d.height.
The d.width and d.height values
are automatically enlarged if either is less than
the minimum size as specified by previous call to
setMinimumSize.
- Overrides:
setSize in class Component
- Parameters:
d - the dimension specifying the new size
of this component- Since:
- 1.6
- See Also:
Component.getSize(),
setBounds(int, int, int, int),
setMinimumSize(java.awt.Dimension)
setSize
public void setSize(int width,
int height)
- Resizes this component so that it has width
width
and height height.
The width and height values
are automatically enlarged if either is less than
the minimum size as specified by previous call to
setMinimumSize.
- Overrides:
setSize in class Component
- Parameters:
width - the new width of this component in pixelsheight - the new height of this component in pixels- Since:
- 1.6
- See Also:
Component.getSize(),
setBounds(int, int, int, int),
setMinimumSize(java.awt.Dimension)
reshape
@Deprecated
public void reshape(int x,
int y,
int width,
int height)
- Deprecated. As of JDK version 1.1,
replaced by
setBounds(int, int, int, int).
- Overrides:
reshape in class Component
setVisible
public void setVisible(boolean b)
- Shows or hides this
Window depending on the value of parameter
b.
- Overrides:
setVisible in class Component
- Parameters:
b - if true, makes the Window visible,
otherwise hides the Window.
If the Window and/or its owner
are not yet displayable, both are made displayable. The
Window will be validated prior to being made visible.
If the Window is already visible, this will bring the
Window to the front.
If false, hides this Window, its subcomponents, and all
of its owned children.
The Window and its subcomponents can be made visible again
with a call to #setVisible(true). - See Also:
Component.isDisplayable(),
Component.setVisible(boolean),
toFront(),
dispose()
show
@Deprecated
public void show()
- Deprecated. As of JDK version 1.5, replaced by
setVisible(boolean).
- Makes the Window visible. If the Window and/or its owner
are not yet displayable, both are made displayable. The
Window will be validated prior to being made visible.
If the Window is already visible, this will bring the Window
to the front.
- Overrides:
show in class Component
- See Also:
Component.isDisplayable(),
toFront()
hide
@Deprecated
public void hide()
- Deprecated. As of JDK version 1.5, replaced by
setVisible(boolean).
- Hide this Window, its subcomponents, and all of its owned children.
The Window and its subcomponents can be made visible again
with a call to
show.
- Overrides:
hide in class Component
- See Also:
show(),
dispose()
dispose
public void dispose()
- Releases all of the native screen resources used by this
Window, its subcomponents, and all of its owned
children. That is, the resources for these Components
will be destroyed, any memory they consume will be returned to the
OS, and they will be marked as undisplayable.
The Window and its subcomponents can be made displayable
again by rebuilding the native resources with a subsequent call to
pack or show. The states of the recreated
Window and its subcomponents will be identical to the
states of these objects at the point where the Window
was disposed (not accounting for additional modifications between
those actions).
Note: When the last displayable window
within the Java virtual machine (VM) is disposed of, the VM may
terminate. See
AWT Threading Issues for more information.
- See Also:
Component.isDisplayable(),
pack(),
show()
toFront
public void toFront()
- If this Window is visible, brings this Window to the front and may make
it the focused Window.
Places this Window at the top of the stacking order and shows it in
front of any other Windows in this VM. No action will take place if this
Window is not visible. Some platforms do not allow Windows which own
other Windows to appear on top of those owned Windows. Some platforms
may not permit this VM to place its Windows above windows of native
applications, or Windows of other VMs. This permission may depend on
whether a Window in this VM is already focused. Every attempt will be
made to move this Window as high as possible in the stacking order;
however, developers should not assume that this method will move this
Window above all other windows in every situation.
Because of variations in native windowing systems, no guarantees about
changes to the focused and active Windows can be made. Developers must
never assume that this Window is the focused or active Window until this
Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event. On
platforms where the top-most window is the focused window, this method
will probably focus this Window, if it is not already focused. On
platforms where the stacking order does not typically affect the focused
window, this method will probably leave the focused and active
Windows unchanged.
If this method causes this Window to be focused, and this Window is a
Frame or a Dialog, it will also become activated. If this Window is
focused, but it is not a Frame or a Dialog, then the first Frame or
Dialog that is an owner of this Window will be activated.
If this window is blocked by modal dialog, then the blocking dialog
is brought to the front and remains above the blocked window.
- See Also:
toBack()
toBack
public void toBack()
- If this Window is visible, sends this Window to the back and may cause
it to lose focus or activation if it is the focused or active Window.
Places this Window at the bottom of the stacking order and shows it
behind any other Windows in this VM. No action will take place is this
Window is not visible. Some platforms do not allow Windows which are
owned by other Windows to appear below their owners. Every attempt will
be made to move this Window as low as possible in the stacking order;
however, developers should not assume that this method will move this
Window below all other windows in every situation.
Because of variations in native windowing systems, no guarantees about
changes to the focused and active Windows can be made. Developers must
never assume that this Window is no longer the focused or active Window
until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED
event. On platforms where the top-most window is the focused window,
this method will probably cause this Window to lose focus. In
that case, the next highest, focusable Window in this VM will receive
focus. On platforms where the stacking order does not typically affect
the focused window, this method will probably leave the focused
and active Windows unchanged.
- See Also:
toFront()
getToolkit
public Toolkit getToolkit()
- Returns the toolkit of this frame.
|