SWT Table的Tableitem多行显示

SWT Table的Tableitem多行显示

1：Table创建好之后添加如下代码：

        Listener paintListener  =   new  Listener() {
             public   void  handleEvent(Event event) {
                 switch (event.type) {        
                     case  SWT.MeasureItem: {
                        TableItem item  =  (TableItem)event.item;
                        String text  =  getText(item, event.index);
                        Point size  =  event.gc.textExtent(text);
                        event.width  =  size.x;
                        event.height  =  Math.max(event.height, size.y);
                         break ;
                    }
                     case  SWT.PaintItem: {
                        TableItem item  =  (TableItem)event.item;
                        String text  =  getText(item, event.index);
                        Point size  =  event.gc.textExtent(text);                    
                         int  offset2  =  event.index  ==   0   ?  Math.max( 0 , (event.height  -  size.y)  /   2 ) :  0 ;
                        event.gc.drawText(text, event.x, event.y  +  offset2,  true );
                         break ;
                    }
                     case  SWT.EraseItem: {    
                        event.detail  &=   ~ SWT.FOREGROUND;
                         break ;
                    }
                }
            }
            String getText(TableItem item,  int  column) {
                 return  item.getText(column);
            }
        };
       table.addListener(SWT.MeasureItem, paintListener);
       table.addListener(SWT.PaintItem, paintListener);
       table.addListener(SWT.EraseItem, paintListener);

2. 换行要自己加个“\n”到字符串中，如

       TableItem item  =   new  TableItem(table, SWT.NONE, table.getItemCount());
      item.setText( " first line "   +   " \n "   +   " second line " );

3.如图所示