1. pro中加
QT += multimedia
2. 加头文件
#include "QAudioDeviceInfo"
3.代码如下
QString s ;
QList<QAudioDeviceInfo> listAudio = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);
foreach(QAudioDeviceInfo audio, listAudio)
{
ui->comboBoxAudio->addItem(audio.deviceName());
s = QString::fromLocal8Bit(audio.deviceName().toLatin1().data());
}