title: QProgressBar rendering is not good
body: <p>I have added a qprogressbar to a form in qt designer, and set minimum and maximum value to 0 to show the in-progress state. but when I run the application progress bar is displayed with the shadow mark as shown in this pic...  </p>
  
  <p><img src="https://i.stack.imgur.com/EIhxL.png" alt="enter image description here"></p>
  
  <p>Same thing happens when I add QProgressDialog from the code.. could some one suggest me how to avoid this problem ?</p>
  
  <p>I am using qt 4.8.4 sdk with qt creator 2.8.0 in Win 7 64 bit.</p>