pushbutton 设置成透明

 deletebtn->setStyleSheet("QPushButton{border-radius:5px;border-width:0px;}");
2.
 pushIcon->setStyleSheet("QPushButton{background-color:rgba(255, 255, 255, 0);border-style: solid;border-width: 0px;\
                            border-color: rgba(255, 255, 255, 0);/*border-radius: 1px;font: bold 4px;min-width: 10em;padding: 2px;*/}");