java.lang.Object | |||
↳ | java.awt.Component | ||
↳ | java.awt.Container | ||
↳ | java.awt.Window |
Known Direct Subclasses |
Known Indirect Subclasses |
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
Window
s, Frame
s, and Dialog
s)
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 ComponentEvent
s
will be generated to indicate the new geometry.
Windows are capable of generating the following WindowEvents: WindowOpened, WindowClosed, WindowGainedFocus, WindowLostFocus.
Nested Classes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Window.AccessibleAWTWindow | This class implements accessibility support for the
Window class. |
[Expand]
Inherited Constants | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.awt.Component
| |||||||||||
From interface
java.awt.image.ImageObserver
|
Public Constructors | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Constructs a new, initially invisible window with the specified
Frame as its owner. | |||||||||||
Constructs a new, initially invisible window with the specified
Window as its owner. | |||||||||||
Constructs a new, initially invisible window with the specified owner
Window and a GraphicsConfiguration
of a screen device. |
Public Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Makes this Window displayable by creating the connection to its
native screen resource.
| |||||||||||
Adds a PropertyChangeListener to the listener list for a specific
property.
| |||||||||||
Adds a PropertyChangeListener to the listener list.
| |||||||||||
Adds the specified window focus listener to receive window events
from this window.
| |||||||||||
Adds the specified window listener to receive window events from
this window.
| |||||||||||
Adds the specified window state listener to receive window
events from this window.
| |||||||||||
This method is deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation .
| |||||||||||
This method is deprecated.
As of J2SE 1.4, replaced by
Component.applyComponentOrientation .
| |||||||||||
Creates a new strategy for multi-buffering on this component.
| |||||||||||
Creates a new strategy for multi-buffering on this component with the
required buffer capabilities.
| |||||||||||
Releases all of the native screen resources used by this
Window , its subcomponents, and all of its owned
children. | |||||||||||
Gets the AccessibleContext associated with this Window.
| |||||||||||
Returns the
BufferStrategy used by this component. | |||||||||||
Always returns
null because Windows have no ancestors; they
represent the top of the Component hierarchy. | |||||||||||
Returns the child Component of this Window that has focus if this Window
is focused; returns null otherwise.
| |||||||||||
Gets a focus traversal key for this Window.
| |||||||||||
Returns whether this Window can become the focused Window if it meets
the other requirements outlined in
isFocusableWindow . | |||||||||||
This method returns the GraphicsConfiguration used by this Window.
| |||||||||||
Returns the sequence of images to be displayed as the icon for this window.
| |||||||||||
Gets the input context for this window.
| |||||||||||
Returns an array of all the objects currently registered
as
FooListener s
upon this Window . | |||||||||||
Gets the
Locale object that is associated
with this window, if the locale has been set. | |||||||||||
Returns the modal exclusion type of this window.
| |||||||||||
Returns the child Component of this Window that will receive the focus
when this Window is focused.
| |||||||||||
Return an array containing all the windows this
window currently owns.
| |||||||||||
Returns the owner of this window.
| |||||||||||
Returns an array of all
Window s created by this application
that have no owner. | |||||||||||
Returns the toolkit of this frame.
| |||||||||||
Gets the warning string that is displayed with this window.
| |||||||||||
Returns an array of all the window focus listeners
registered on this window.
| |||||||||||
Returns an array of all the window listeners
registered on this window.
| |||||||||||
Returns an array of all the window state listeners
registered on this window.
| |||||||||||
Returns an array of all
Window s, both owned and ownerless,
created by this application. | |||||||||||
This method is deprecated.
As of JDK version 1.5, replaced by
setVisible(boolean) .
| |||||||||||
Returns whether this Window is active.
| |||||||||||
Returns whether this window is an always-on-top window.
| |||||||||||
Returns whether the always-on-top mode is supported for this
window.
| |||||||||||
Always returns
true because all Windows must be roots of a
focus traversal cycle. | |||||||||||
Returns whether this Window can become the focused Window, that is,
whether this Window or any of its subcomponents can become the focus
owner.
| |||||||||||
Returns whether this Window is focused.
| |||||||||||
Returns
true if this Window will appear at the default location
for the native windowing system the next time this Window is made visible. | |||||||||||
Checks if this Window is showing on screen.
| |||||||||||
Causes this Window to be sized to fit the preferred size
and layouts of its subcomponents.
| |||||||||||
This method is deprecated.
As of JDK version 1.1
replaced by
dispatchEvent(AWTEvent) .
| |||||||||||
Makes this Container undisplayable by removing its connection
to its native screen resource.
| |||||||||||
Removes the specified window focus listener so that it no longer
receives window events from this window.
| |||||||||||
Removes the specified window listener so that it no longer
receives window events from this window.
| |||||||||||
Removes the specified window state listener so that it no
longer receives window events from this window.
| |||||||||||
This method is deprecated.
As of JDK version 1.1,
replaced by
setBounds(int, int, int, int) .
| |||||||||||
Sets whether this window should always be above other windows.
| |||||||||||
Moves and resizes this component to conform to the new
bounding rectangle
r .
The | |||||||||||
Moves and resizes this component.
The | |||||||||||
Set the cursor image to a specified cursor.
| |||||||||||
Does nothing because Windows must always be roots of a focus traversal
cycle.
| |||||||||||
Sets whether this Window can become the focused Window if it meets
the other requirements outlined in
isFocusableWindow . | |||||||||||
Sets the image to be displayed as the icon for this window.
| |||||||||||
Sets the sequence of images to be displayed as the icon
for this window.
| |||||||||||
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. | |||||||||||
Sets the location of the window relative to the specified
component.
| |||||||||||
Sets the minimum size of this window to a constant
value.
| |||||||||||
Specifies the modal exclusion type for this window.
| |||||||||||
Resizes this component so that it has width
width
and height height .
The | |||||||||||
Resizes this component so that it has width
d.width
and height d.height .
The | |||||||||||
Shows or hides this
Window depending on the value of parameter
b . | |||||||||||
This method is deprecated.
As of JDK version 1.5, replaced by
setVisible(boolean) .
| |||||||||||
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.
| |||||||||||
If this Window is visible, brings this Window to the front and may make
it the focused Window.
|
Protected Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Processes events on this window.
| |||||||||||
Processes window events occurring on this window by
dispatching them to any registered WindowListener objects.
| |||||||||||
Processes window focus event occuring on this window by
dispatching them to any registered WindowFocusListener objects.
| |||||||||||
Processes window state event occuring on this window by
dispatching them to any registered
WindowStateListener
objects. |
[Expand]
Inherited Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.awt.Container
| |||||||||||
From class
java.awt.Component
| |||||||||||
From class
java.lang.Object
| |||||||||||
From interface
java.awt.MenuContainer
| |||||||||||
From interface
java.awt.image.ImageObserver
| |||||||||||
From interface
javax.accessibility.Accessible
|
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.
owner | the Frame to act as owner or null
if this window has no owner |
---|
IllegalArgumentException | if the owner 's
GraphicsConfiguration is not from a screen device |
---|---|
HeadlessException | when
GraphicsEnvironment.isHeadless returns true |
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.
owner | the Window to act as owner or
null if this window has no owner |
---|
IllegalArgumentException | if the owner 's
GraphicsConfiguration is not from a screen device |
---|---|
HeadlessException | when
GraphicsEnvironment.isHeadless() returns
true |
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.
owner | the window to act as owner or null
if this window has no owner |
---|---|
gc | the GraphicsConfiguration of the target
screen device; if gc is null ,
the system default GraphicsConfiguration is assumed |
IllegalArgumentException | if gc
is not from a screen device |
---|---|
HeadlessException | when
GraphicsEnvironment.isHeadless() returns
true |
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.
Adds a PropertyChangeListener to the listener list for a specific property. The specified property may be user-defined, or one of the following:
If listener is null, no exception is thrown and no action is performed.
propertyName | one of the property names listed above |
---|---|
listener | the PropertyChangeListener to be added |
Adds a PropertyChangeListener to the listener list. The listener is registered for all bound properties of this class, including the following:
If listener is null, no exception is thrown and no action is performed.
listener | the PropertyChangeListener to be added |
---|
Adds the specified window focus listener to receive window events from this window. If l is null, no exception is thrown and no action is performed.
Refer to AWT Threading Issues for details on AWT's threading model.
l | the window focus listener |
---|
Adds the specified window listener to receive window events from this window. If l is null, no exception is thrown and no action is performed.
Refer to AWT Threading Issues for details on AWT's threading model.
l | the window listener |
---|
Adds the specified window state listener to receive window
events from this window. If l
is null
,
no exception is thrown and no action is performed.
Refer to AWT Threading Issues for details on AWT's threading model.
l | the window state listener |
---|
Creates a new strategy for multi-buffering on this component.
Multi-buffering is useful for rendering performance. This method
attempts to create the best strategy available with the number of
buffers supplied. It will always create a BufferStrategy
with that number of buffers.
A page-flipping strategy is attempted first, then a blitting strategy
using accelerated buffers. Finally, an unaccelerated blitting
strategy is used.
Each time this method is called, the existing buffer strategy for this component is discarded.
numBuffers | number of buffers to create |
---|
IllegalArgumentException | if numBuffers is less than 1. |
---|---|
IllegalStateException | if the component is not displayable |
Creates a new strategy for multi-buffering on this component with the required buffer capabilities. This is useful, for example, if only accelerated memory or page flipping is desired (as specified by the buffer capabilities).
Each time this method is called, the existing buffer strategy for this component is discarded.
numBuffers | number of buffers to create, including the front buffer |
---|---|
caps | the required capabilities for creating the buffer strategy;
cannot be null |
AWTException | if the capabilities supplied could not be supported or met; this may happen, for example, if there is not enough accelerated memory currently available, or if page flipping is specified but not possible. |
---|---|
IllegalArgumentException | if numBuffers is less than 1, or if
caps is null |
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 Component
s
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.
Gets the AccessibleContext associated with this Window. For windows, the AccessibleContext takes the form of an AccessibleAWTWindow. A new AccessibleAWTWindow instance is created if necessary.
Returns the BufferStrategy
used by this component. This
method will return null if a BufferStrategy
has not yet
been created or has been disposed.
Always returns null
because Windows have no ancestors; they
represent the top of the Component hierarchy.
null
Returns the child Component of this Window that has focus if this Window is focused; returns null otherwise.
Gets a focus traversal key for this Window. (See
setFocusTraversalKeys
for a full description of each key.)
If the traversal key has not been explicitly set for this Window, then this Window's parent's traversal key is returned. If the traversal key has not been explicitly set for any of this Window's ancestors, then the current KeyboardFocusManager's default traversal key is returned.
id | one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS |
---|
IllegalArgumentException | if id is not one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS |
---|
Returns whether this Window can become the focused Window if it meets
the other requirements outlined in isFocusableWindow
. If
this method returns false
, then
isFocusableWindow
will return false
as well.
If this method returns true
, then
isFocusableWindow
may return true
or
false
depending upon the other requirements which must be
met in order for a Window to be focusable.
By default, all Windows have a focusable Window state of
true
.
This method returns the GraphicsConfiguration used by this Window.
GraphicsConfiguration
used by this
Component
or null
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.
Gets the input context for this window. A window always has an input context, which is shared by subcomponents unless they create and set their own.
null
if no context can be determinedReturns an array of all the objects currently registered
as FooListener
s
upon this Window
.
FooListener
s are registered using the
addFooListener
method.
You can specify the listenerType
argument
with a class literal, such as
FooListener.class
.
For example, you can query a
Window
w
for its window listeners with the following code:
WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));If no such listeners exist, this method returns an empty array.
listenerType | the type of listeners requested; this parameter
should specify an interface that descends from
java.util.EventListener |
---|
FooListener
s on this window,
or an empty array if no such
listeners have been addedClassCastException | if listenerType
doesn't specify a class or interface that implements
java.util.EventListener |
---|
Gets the Locale
object that is associated
with this window, if the locale has been set.
If no locale has been set, then the default locale
is returned.
Returns the modal exclusion type of this window.
Returns the child Component of this Window that will receive the focus
when this Window is focused. If this Window is currently focused, this
method returns the same Component as getFocusOwner()
. If
this Window is not focused, then the child Component that most recently
requested focus will be returned. If no child Component has ever
requested focus, and this is a focusable Window, then this Window's
initial focusable Component is returned. If no child Component has ever
requested focus, and this is a non-focusable Window, null is returned.
Return an array containing all the windows this window currently owns.
Returns an array of all Window
s created by this application
that have no owner. They include Frame
s and ownerless
Dialog
s and Window
s.
If called from an applet, the array includes only the Window
s
accessible by that applet.
Warning: this method may return system created windows, such
as a print dialog. Applications should not assume the existence of
these dialogs, nor should an application assume anything about these
dialogs such as component positions, LayoutManager
s
or serialization.
Gets the warning string that is displayed with this window.
If this window is insecure, the warning string is displayed
somewhere in the visible area of the window. A window is
insecure if there is a security manager, and the security
manager's checkTopLevelWindow
method returns
false
when this window is passed to it as an
argument.
If the window is secure, then getWarningString
returns null
. If the window is insecure, this
method checks for the system property
awt.appletWarning
and returns the string value of that property.
Returns an array of all the window focus listeners registered on this window.
WindowFocusListener
s
or an empty array if no window focus
listeners are currently registeredReturns an array of all the window listeners registered on this window.
WindowListener
s
or an empty array if no window
listeners are currently registeredReturns an array of all the window state listeners registered on this window.
WindowStateListener
s
or an empty array if no window state
listeners are currently registeredReturns an array of all Window
s, both owned and ownerless,
created by this application.
If called from an applet, the array includes only the Window
s
accessible by that applet.
Warning: this method may return system created windows, such
as a print dialog. Applications should not assume the existence of
these dialogs, nor should an application assume anything about these
dialogs such as component positions, LayoutManager
s
or serialization.
This method is 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
.
Returns whether this Window is active. Only a Frame or a Dialog may be active. The native windowing system may denote the active Window or its children with special decorations, such as a highlighted title bar. The active Window is always either the focused Window, or the first Frame or Dialog that is an owner of the focused Window.
Returns whether this window is an always-on-top window.
true
, if the window is in always-on-top state,
false
otherwiseReturns whether the always-on-top mode is supported for this window. Some platforms may not support always-on-top windows, some may support only some kinds of top-level windows; for example, a platform may not support always-on-top modal dialogs.
true
, if the always-on-top mode is
supported by the toolkit and for this window,
false
, if always-on-top mode is not supported
for this window or toolkit doesn't support always-on-top windows.Always returns true
because all Windows must be roots of a
focus traversal cycle.
true
Returns whether this Window can become the focused Window, that is,
whether this Window or any of its subcomponents can become the focus
owner. For a Frame or Dialog to be focusable, its focusable Window state
must be set to true
. For a Window which is not a Frame or
Dialog to be focusable, its focusable Window state must be set to
true
, its nearest owning Frame or Dialog must be
showing on the screen, and it must contain at least one Component in
its focus traversal cycle. If any of these conditions is not met, then
neither this Window nor any of its subcomponents can become the focus
owner.
true
if this Window can be the focused Window;
false
otherwiseReturns whether this Window is focused. If there exists a focus owner, the focused Window is the Window that is, or contains, that focus owner. If there is no focus owner, then no Window is focused.
If the focused Window is a Frame or a Dialog it is also the active Window. Otherwise, the active Window is the first Frame or Dialog that is an owner of the focused Window.
Returns true
if this Window will appear at the default location
for the native windowing system the next time this Window is made visible.
This method always returns false
if the Window is showing on the
screen.
Checks if this Window is showing on screen.
true
if the component is showing,
false
otherwiseCauses 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.
This method is deprecated.
As of JDK version 1.1
replaced by dispatchEvent(AWTEvent)
.
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.
Removes the specified window focus listener so that it no longer receives window events from this window. If l is null, no exception is thrown and no action is performed.
Refer to AWT Threading Issues for details on AWT's threading model.
l | the window focus listener |
---|
Removes the specified window listener so that it no longer receives window events from this window. If l is null, no exception is thrown and no action is performed.
Refer to AWT Threading Issues for details on AWT's threading model.
l | the window listener |
---|
Removes the specified window state listener so that it no
longer receives window events from this window. If
l
is null
, no exception is thrown and
no action is performed.
Refer to AWT Threading Issues for details on AWT's threading model.
l | the window state listener |
---|
This method is deprecated.
As of JDK version 1.1,
replaced by setBounds(int, int, int, int)
.
Sets whether this window should always be above other windows. If there are multiple always-on-top windows, their relative order is unspecified and platform dependent.
If some other window is already always-on-top then the relative order between these windows is unspecified (depends on platform). No window can be brought to be over the always-on-top window except maybe another always-on-top window.
All windows owned by an always-on-top window inherit this state and
automatically become always-on-top. If a window ceases to be
always-on-top, the windows that it owns will no longer be
always-on-top. When an always-on-top window is sent toBack
, its always-on-top state is set to false
.
When this method is called on a window with a value of
true
, and the window is visible and the platform
supports always-on-top for this window, the window is immediately
brought forward, "sticking" it in the top-most position. If the
window isn`t currently visible, this method sets the always-on-top
state to true
but does not bring the window forward.
When the window is later shown, it will be always-on-top.
When this method is called on a window with a value of
false
the always-on-top state is set to normal. The
window remains in the top-most position but it`s z-order can be
changed as for any other window. Calling this method with a value
of false
on a window that has a normal state has no
effect. Setting the always-on-top state to false has no effect on
the relative z-order of the windows if there are no other
always-on-top windows.
Note: some platforms might not support always-on-top
windows. To detect if always-on-top windows are supported by the
current platform, use isAlwaysOnTopSupported()
and
isAlwaysOnTopSupported()
. If always-on-top mode
isn't supported by the toolkit or for this window, calling this
method has no effect.
If a SecurityManager is installed, the calling thread must be granted the AWTPermission "setWindowAlwaysOnTop" in order to set the value of this property. If this permission is not granted, this method will throw a SecurityException, and the current value of the property will be left unchanged.
alwaysOnTop | true if the window should always be above other windows |
---|
SecurityException | if the calling thread does not have permission to set the value of always-on-top property |
---|
Moves and resizes this component to conform to the new
bounding rectangle r
. This component's new
position is specified by r.x
and r.y
,
and its new size is specified by r.width
and
r.height
The r.width
or r.height
values
will be automatically enlarged if either is less than
the minimum size as specified by previous call to
setMinimumSize
.
r | the new bounding rectangle for this component |
---|
Moves and resizes this component. The new location of the top-left
corner is specified by x
and y
, and the
new size is specified by width
and height
.
The width
or height
values
are automatically enlarged if either is less than
the minimum size as specified by previous call to
setMinimumSize
.
x | the new x-coordinate of this component |
---|---|
y | the new y-coordinate of this component |
width | the new width of this component |
height | the new height of this
component |
Set the cursor image to a specified cursor.
The method may have no visual effect if the Java platform implementation and/or the native system do not support changing the mouse cursor shape.
cursor | One of the constants defined
by the Cursor class. If this parameter is null
then the cursor for this window will be set to the type
Cursor.DEFAULT_CURSOR. |
---|
Does nothing because Windows must always be roots of a focus traversal cycle. The passed-in value is ignored.
focusCycleRoot | this value is ignored |
---|
Sets whether this Window can become the focused Window if it meets
the other requirements outlined in isFocusableWindow
. If
this Window's focusable Window state is set to false
, then
isFocusableWindow
will return false
. If this
Window's focusable Window state is set to true
, then
isFocusableWindow
may return true
or
false
depending upon the other requirements which must be
met in order for a Window to be focusable.
Setting a Window's focusability state to false
is the
standard mechanism for an application to identify to the AWT a Window
which will be used as a floating palette or toolbar, and thus should be
a non-focusable Window.
Setting the focusability state on a visible Window
can have a delayed effect on some platforms the actual
change may happen only when the Window
becomes
hidden and then visible again. To ensure consistent behavior
across platforms, set the Window
's focusable state
when the Window
is invisible and then show it.
focusableWindowState | whether this Window can be the focused Window |
---|
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<Image> imageList = new ArrayList<Image>(); 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.
image | the icon image to be displayed. |
---|
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.
icons | the list of icon images to be displayed. |
---|
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.
This behavior resembles a native window shown without programmatically
setting its location. Most windowing systems cascade windows if their
locations are not explicitly set. The actual location is determined once the
window is shown on the screen.
This behavior can also be enabled by setting the System Property "java.awt.Window.locationByPlatform" to "true", though calls to this method take precedence.
Calls to setVisible
, setLocation
and
setBounds
after calling setLocationByPlatform
clear
this property of the Window.
For example, after the following code is executed:
The window will be shown at platform's default location andsetLocationByPlatform(true); setVisible(true); boolean flag = isLocationByPlatform();
flag
will be false
.
In the following sample:
The window will be shown at (10, 10) andsetLocationByPlatform(true); setLocation(10, 10); boolean flag = isLocationByPlatform(); setVisible(true);
flag
will be
false
.locationByPlatform | true if this Window should appear
at the default location, false if at the current location |
---|
if the window
is showing on screen and locationByPlatform is true . |
Sets the location of the window relative to the specified component.
If the component is not currently showing, or c
is null
, the window is placed at the center of
the screen. The center point can be determined with GraphicsEnvironment.getCenterPoint
If the bottom of the component is offscreen, the window is
placed to the side of the Component
that is
closest to the center of the screen. So if the Component
is on the right part of the screen, the Window
is placed to its left, and vice versa.
c | the component in relation to which the window's location is determined |
---|
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.
minimumSize | the new minimum size of this window |
---|
Specifies the modal exclusion type for this window. If a window is modal
excluded, it is not blocked by some modal dialogs. See Dialog.ModalExclusionType
for
possible modal exclusion types.
If the given type is not supported, NO_EXCLUDE
is used.
Note: changing the modal exclusion type for a visible window may have no effect until it is hidden and then shown again.
exclusionType | the modal exclusion type for this window; a null
value is equivivalent to NO_EXCLUDE |
---|
SecurityException | if the calling thread does not have permission
to set the modal exclusion property to the window with the given
exclusionType |
---|
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
.
width | the new width of this component in pixels |
---|---|
height | the new height of this component in pixels |
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
.
d | the dimension specifying the new size of this component |
---|
Shows or hides this Window
depending on the value of parameter
b
.
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 |
---|
This method is 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.
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.
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.
Processes events on this window. If the event is an
WindowEvent
, it invokes the
processWindowEvent
method, else it invokes its
superclass's processEvent
.
Note that if the event parameter is null
the behavior is unspecified and may result in an
exception.
e | the event |
---|
Processes window events occurring on this window by dispatching them to any registered WindowListener objects. NOTE: This method will not be called unless window events are enabled for this component; this happens when one of the following occurs:
addWindowListener
enableEvents
Note that if the event parameter is null
the behavior is unspecified and may result in an
exception.
e | the window event |
---|
Processes window focus event occuring on this window by dispatching them to any registered WindowFocusListener objects. NOTE: this method will not be called unless window focus events are enabled for this window. This happens when one of the following occurs:
addWindowFocusListener
enableEvents
Note that if the event parameter is null
the behavior is unspecified and may result in an
exception.
e | the window focus event |
---|
Processes window state event occuring on this window by
dispatching them to any registered WindowStateListener
objects.
NOTE: this method will not be called unless window state events
are enabled for this window. This happens when one of the
following occurs:
WindowStateListener
is registered via
addWindowStateListener
enableEvents
Note that if the event parameter is null
the behavior is unspecified and may result in an
exception.
e | the window state event |
---|