?? label.java
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package java.awt;/** * class Label - * * Copyright (c) 1999 * Transvirtual Technologies, Inc. All rights reserved. * * See the file "license.terms" for information on usage and redistribution * of this file. */public class Label extends NativeComponent{ final public static int LEFT = 0; final public static int CENTER = 1; final public static int RIGHT = 2; int align; String label;public Label() { this( "", LEFT);}public Label( String label) { this( label, LEFT);}public Label( String label, int align) { setForeground( Defaults.LabelClr); setFont( Defaults.LabelFont); setText( label); setAlignment( align);}public void addNotify() { if ( nativeData == null ) { Toolkit.createNative(this); super.addNotify(); Toolkit.lblSetJustify( nativeData, align ); }}void createNative() { nativeData = Toolkit.lblCreateLabel( getParentData(), label);}public int getAlignment() { return align;}public Dimension getPreferredSize() { int cx = 50; int cy = 20; FontMetrics fm = getFontMetrics( getFont() ); cx = Math.max( cx, fm.stringWidth( label)); cy = Math.max( cy, 3*fm.getHeight()/2 ); return new Dimension( cx, cy);}public String getText() { return label;}public boolean isFocusTraversable() { return false;}protected String paramString() { return ( super.paramString() + ",Label: " + label);}public void setAlignment( int align) { if ( (align < LEFT) || (align > RIGHT) ) throw new IllegalArgumentException(); this.align = align; if ( nativeData != null ) { Toolkit.lblSetJustify( nativeData, align); }}public void setText( String label) { if ( label == null ) label = ""; if ( (this.label == null ) || ! (this.label.equals( label)) ){ this.label = label; if ( nativeData != null ) Toolkit.lblSetText( nativeData, this.label); }}}?? 快捷鍵說(shuō)明
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