QProgressBar样式表设置

  progressBar->setStyleSheet
  (
      "QProgressBar
       {
            min-width: 280px; //最小宽度
            max-width: 280px; //最大宽度
            max-height:15px;  //最大高度
            background-color:white;  //背景色
            border:1px solid #55585E;//边框样式
            border-radius:5px;       //边框圆角设置
       } "
      "QProgressBar::chunk
       {
            min-width: 280px; 
            max-width: 280px;
            max-height:17px;
            background-color:blue;
            border-top-left-radius:5px; 
            border-top-right-radius:0px;
            border-bottom-right-radius:0px;
            border-bottom-left-radius:5px; 
        } "
  );

设置进度条文字是否可见

progressBar->setTextVisible(false);