org.eclipse.swt.widgets
Class FontDialog

java.lang.Object
  |
  +--org.eclipse.swt.widgets.Dialog
        |
        +--org.eclipse.swt.widgets.FontDialog

public class FontDialog

extends Dialog

Instances of this class allow the user to select a font from all available fonts in the system.

IMPORTANT: This class is intended to be subclassed only within the SWT implementation.

Constructor Summary

FontDialog(Shell parent)
Constructs a new instance of this class given only its parent.

FontDialog(Shell parent, int style)
Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

Method Summary

FontData	getFontData() Returns a FontData object describing the font that was selected in the dialog, or null if none is available.
FontData	open() Makes the dialog visible and brings it to the front of the display.
void	setFontData(FontData fontData) Sets a FontData object describing the font to be selected by default in the dialog, or null to let the platform choose one.

Methods inherited from class org.eclipse.swt.widgets.Dialog

checkSubclass, getParent, getStyle, getText, setText

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FontDialog

public FontDialog(Shell parent)

Constructs a new instance of this class given only its parent.

Note: Currently, null can be passed in for the parent. This has the effect of creating the dialog on the currently active display if there is one. If there is no current display, the dialog is created on a "default" display. Passing in null as the parent is not considered to be good coding style, and may not be supported in a future release of SWT.

Parameters:

parent - a shell which will be the parent of the new instance

Throws:

IllegalArgumentException -

• ERROR_NULL_ARGUMENT - if the parent is null

SWTException -

• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
• ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass

FontDialog

public FontDialog(Shell 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.

Note: Currently, null can be passed in for the parent. This has the effect of creating the dialog on the currently active display if there is one. If there is no current display, the dialog is created on a "default" display. Passing in null as the parent is not considered to be good coding style, and may not be supported in a future release of SWT.

Parameters:

parent - a shell which will be the parent of the new instance

Throws:

IllegalArgumentException -

• ERROR_NULL_ARGUMENT - if the parent is null

SWTException -

• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
• ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass

Method Detail

getFontData

public FontData getFontData()

Returns a FontData object describing the font that was selected in the dialog, or null if none is available.

Returns:

the FontData for the selected font, or null

open

public FontData open()

Makes the dialog visible and brings it to the front of the display.

Returns:

a FontData object describing the font that was selected, or null if the dialog was cancelled or an error occurred

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the dialog has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog

setFontData

public void setFontData(FontData fontData)

Sets a FontData object describing the font to be selected by default in the dialog, or null to let the platform choose one.

Parameters:

fontData - the FontData to use initially, or null