//设置textEdit颜色
QPalette palette= ui->receiveTextEdit->palette();
palette.setColor(QPalette::Base, Qt::black);
palette.setColor(QPalette::Text, Qt::green);
ui->receiveTextEdit->setPalette(palette);
//设置textEdit颜色
QPalette palette= ui->receiveTextEdit->palette();
palette.setColor(QPalette::Base, Qt::black);
palette.setColor(QPalette::Text, Qt::green);
ui->receiveTextEdit->setPalette(palette);