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org.eclipse.swt.widgets
Class Canvas
java.lang.Object
org.eclipse.swt.widgets.Widget
org.eclipse.swt.widgets.Control
org.eclipse.swt.widgets.Scrollable
org.eclipse.swt.widgets.Composite
org.eclipse.swt.widgets.Canvas
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All Implemented Interfaces:
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Adaptable
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Direct Known Subclasses:
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CLabel,
Decorations
- public class Canvas
- extends
Composite
This class serves as a base class for custom widgets.
It does not yet provides any drawing capabilities.
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Styles:
- (none)
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Events:
- (none)
This class may be subclassed by custom control implementors
who are building controls that are not constructed
from aggregates of other controls.
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Since:
- 1.0
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See Also:
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Composite
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Constructor Summary
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Canvas
(
Composite parent,
int style)
Constructs a new instance of this class given its parent
and a style value describing its behavior and appearance. |
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Methods inherited from class org.eclipse.swt.widgets.
Composite
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changed,
computeSize,
getAdapter,
getBackgroundMode,
getChildren,
getLayout,
getLayoutDeferred,
getTabList,
isLayoutDeferred,
layout,
layout,
layout,
layout,
setBackgroundMode,
setFocus,
setLayout,
setTabList
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Methods inherited from class org.eclipse.swt.widgets.
Control
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addControlListener,
addFocusListener,
addKeyListener,
addMouseListener,
addTraverseListener,
computeSize,
forceFocus,
getBackground,
getBackgroundImage,
getBorderWidth,
getBounds,
getCursor,
getEnabled,
getFont,
getForeground,
getLayoutData,
getLocation,
getMenu,
getMonitor,
getParent,
getShell,
getSize,
getToolTipText,
getVisible,
isEnabled,
isFocusControl,
isVisible,
moveAbove,
moveBelow,
pack,
pack,
redraw,
removeControlListener,
removeFocusListener,
removeKeyListener,
removeMouseListener,
removeTraverseListener,
setBackground,
setBackgroundImage,
setBounds,
setBounds,
setCursor,
setEnabled,
setFont,
setForeground,
setLayoutData,
setLocation,
setLocation,
setMenu,
setRedraw,
setSize,
setSize,
setToolTipText,
setVisible,
toControl,
toControl,
toDisplay,
toDisplay
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Methods inherited from class org.eclipse.swt.widgets.
Widget
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addDisposeListener,
addListener,
checkSubclass,
checkWidget,
dispose,
getData,
getData,
getDisplay,
getStyle,
isDisposed,
notifyListeners,
removeDisposeListener,
removeListener,
setData,
setData,
toString
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Canvas
public Canvas(
Composite parent,
int style)
- Constructs a new instance of this class given its parent
and a style value describing its behavior and appearance.
The style value is either one of the style constants defined in
class SWT which is applicable to instances of this
class, or must be built by bitwise OR'ing together
(that is, using the int "|" operator) two or more
of those SWT style constants. The class description
lists the style constants that are applicable to the class.
Style bits are also inherited from superclasses.
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Parameters:
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parent - a composite control which will be the parent of the new
instance (cannot be null) -
style - the style of control to construct
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Throws:
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IllegalArgumentException
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- ERROR_NULL_ARGUMENT - if the parent is null
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SWTException -
- ERROR_THREAD_INVALID_ACCESS - if not called from the thread that
created the parent
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See Also:
-
SWT,
Widget.checkSubclass(),
Widget.getStyle()
Copyright (c) Innoopract Informationssysteme GmbH and others 2002, 2008. All rights reserved.
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