绘制布局后的SmartGWT getOffsetHeight [英] SmartGWT getOffsetHeight after layout is drawn

问题描述

我需要获取Vlayout的offsetHeight，但是直到我知道它被绘制为止.我如何检查该组件是否已绘制?

I need get offsetHeight of Vlayout, but until i know that it's drawn. How I can check that, this component is drawn ?

推荐答案

如何检查此组件是否已绘制?

How I can check that, this component is drawn ?

您可以覆盖Canvas的onDraw方法并在其中添加一些自定义功能.

You can override the onDraw method of Canvas and add some custom functionality there.

  @Override
  protected void onDraw()
  {
    super.onDraw();
    //your code
  }

或者，您可以向组件添加绘制处理程序:

Alternatively you can add a draw handler to the component:

 addDrawHandler(new DrawHandler() {

     @Override
     public void onDraw(DrawEvent event)
     {
        //Do stuff
     }
  });

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