Bug 146159 [Regression]Changing font operation doesn't work other than the first time
Description: The first time changing operation can work well. However, Change it again, it won't work. Steps: 1.Insert lable/text to layout or master page 2.Change the font from serif to cursive, it works well 3.Change the font again Result: The action doesn't work Additional infor: build number:200606080632
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
static Pattern punctuation = Pattern.compile( "\\p{Punct}||\\p{Blank}||\\p{Space}" ); 
	public static Object listArea;
	/**
	 * Returns the length in pixels of given string in a control.
	 * 
	 * @return the length in pixels
	 */
	public static int getStringWidth( String string, Control control )
	{
		int width = 0;
		GC gc = new GC( control );
		for ( int i = 0; i < string.length( ); i++ )
		{
			char c = string.charAt( i );
			width += gc.getAdvanceWidth( c );
		}
		gc.dispose( );
		return width;
	}
	public static String AddQuote( String string )
	{
		if ( string != null
				&& ( !( string.startsWith( "\"" ) && string.endsWith( "\"" ) ) ) )
		{
			return "\"" + string + "\"";
		}
		return string;
	}
	public static String RemoveQuote( String string )
	{