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
* 
	 * @return the width hint
	 */
	public static int getWidthHint( int wHint, Control c )
	{
		boolean wrap = isWrapControl( c );
		return wrap ? wHint : SWT.DEFAULT;
	}
	/**
	 * Returns the height hint for the given control.
	 * 
	 * @param hHint
	 *            the width hint
	 * @param c
	 *            the control
	 * 
	 * @return the height hint
	 */
	public static int getHeightHint( int hHint, Control c )
	{
		if ( c instanceof Composite )
		{
			Layout layout = ( (Composite) c ).getLayout( );
			if ( layout instanceof ColumnLayout )
				return hHint;
		}
		return SWT.DEFAULT;
	}
	/**
	 * Updates the page scroll increment for given composite.