Qt在linux和windows通过QStorageInfo类来获取某个特定磁盘信息，包括大小

#include "mainwindow.h" #include <QApplication> #include <QStorageInfo> #include <QDebug> int main(int argc, char *argv[]) { QApplication a(argc, argv); MainWindow w; w.show(); /* QList<QStorageInfo> list = QStorageInfo::mountedVolumes(); qDebug() << "Volume Num: " << list.size(); for(QStorageInfo& si : list) { qDebug() << "Name: " << si.name(); qDebug() << "Block Size: " << si.blockSize(); qDebug() << "Bytes Avaliable: " << si.bytesAvailable(); qDebug() << "Bytes Free: " << si.bytesFree(); qDebug() << "Bytes Total: " << si.bytesTotal(); qDebug() << "Display Name: " << si.displayName(); qDebug() << "File System Type: " << si.fileSystemType(); qDebug() << "Is ReadOnly: " << si.isReadOnly(); qDebug() << "Is Root: " << si.isRoot(); } qDebug() << QStorageInfo::root().device(); */ QString dir = QDir::currentPath(); quint64 space = 0; QList<QStorageInfo> storageInfoList = QStorageInfo::mountedVolumes();//得到当前系统中挂载的所有文件系统的列表 foreach(QStorageInfo storage,storageInfoList) //根据列表查找 { if(dir.contains(storage.rootPath()))//windows上获取系统盘，比如C盘，这里通过比较查看dir属于哪一个盘 { qDebug()<<"dir:"<<dir; qDebug()<<"storage.rootPath:"<<storage.rootPath(); space = storage.bytesAvailable()/1024/1024; //获取这个盘的大小 break; } } return a.exec(); }