帮我分割一下对话框

画个简单的图来说明一下问题：想把对话框分成这样：
              ------------------------------------
              |                        |   列    |
              |                        |   表    |
              |                        |   框    |
              |     绘图区             |         |
              |                        |---------|
              |                        |   按    |
              |                        |   钮    |
              |                        |         |
              ------------------------------------ 
就好象 绘图区 是一个对话框，无论画的图有多大都不会越出绘图区的范围，
清屏刷新时即使会让界面抖动，也只是绘图区抖动