ui->listChat->setStyleSheet("background-image: url(:/icons/res/sdlogo.png) ;background-attachment: fixed ;background-position: center center ;background-repeat: no-repeat;background-size: cover");
}
if(theme=="default"){ui->listChat->setStyleSheet("background-image: url(:/icons/res/sdlogo2.png) ;background-attachment: fixed ;background-position: center center ;background-repeat: no-repeat;background-size: cover");}
if(theme=="Default"){ui->listChat->setStyleSheet("background-image: url(:/icons/res/sdlogo2.png) ;background-attachment: fixed ;background-position: center center ;background-repeat: no-repeat;background-size: cover");}