按下按钮后强制重画 [英] Force repaint after button click

问题描述

考虑这个scala swing代码

consider this piece of scala swing code

detail.reactions += {
  case ButtonClicked(but) =>
    detail.contents += new Label(but.text)
    detail.background = new java.awt.Color(0,255,0)
}

细节是 FlowPanel 类型。
当单击按钮时，颜色立即重画，但标签不是。当我点击该区域时它会显示。

the detail is of FlowPanel type. When the button is clicked, the color is instantly repainted, but the Label is not. It gets visible as I click the area. How can I force the detail to repaint its contents after a click?

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