Qt按钮暂停与播放

效果图： 

 核心代码（懒，类名默认）：

  

   

    

     

    
    

     

      QtGuiApplication7::QtGuiApplication7(QWidget *parent)
     
    
   

    

     

    
    

     

      	: QWidget(parent)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

      	ui.setupUi(
      this);
     
    
   

    

     

    
    

     

      	flag_satrt = 
      1;
     
    
   

    

     

    
    

     

      	ui.pushButton_2->setStyleSheet(
      "border-image: url(:/QtGuiApplication7/6624c737b28d33a265e4904e43d616db.png);");
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      void QtGuiApplication7::on_pushButton_2_pressed()
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	
     
    
   

    

     

    
    

     
	
      if (flag_satrt)
     
    
   

    

     

    
    

     

      	{
     
    
   

    

     

    
    

     

      		ui.pushButton_2->setStyleSheet(
      "border-image: url(:/QtGuiApplication7/2.png);");
     
    
   

    

     

    
    

     

      		flag_satrt = 
      0;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     
	
      else
     
    
   

    

     

    
    

     

      	{
     
    
   

    

     

    
    

     

      		ui.pushButton_2->setStyleSheet(
      "border-image: url(:/QtGuiApplication7/6624c737b28d33a265e4904e43d616db.png);");
     
    
   

    

     

    
    

     

      		flag_satrt = 
      1;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     

      }