버튼 롤오버기능 + png

png 이미지를 리소스에 넣은 후 

 

ui->BtnOk->setStyleSheet("QPushButton{background:url(:image/22/006_782x578.png);border:0px;}"
                             "QPushButton:hover{background:url(:image/22/006_782x578.png);border:0px}"
                             "QPushButton:pressed{background:url(:image/22/007_782x578.png); position: relative;top: 1px; left: 1px;}");