gridData.heightHint = 300;
gridData.heightHint = 200;
	private void createPreviewArea( )	{		cmpPreview = createCompositeWrapper( cmpTask );		{			GridData gridData = new GridData( GridData.FILL_BOTH );			gridData.widthHint = CENTER_WIDTH_HINT;			gridData.heightHint = 300;			cmpPreview.setLayoutData( gridData );		}		Label label = new Label( cmpPreview, SWT.NONE );		{			label.setFont( JFaceResources.getBannerFont( ) );			label.setText( Messages.getString( "TaskSelectData.Label.ChartPreview" ) ); //$NON-NLS-1$		}		previewCanvas = new Canvas( cmpPreview, SWT.NONE );		{			previewCanvas.setLayoutData( new GridData( GridData.FILL_BOTH ) );			whiteColor = new Color( Display.getDefault( ), 255, 255, 255 );			previewCanvas.setBackground( whiteColor );		}	}