Qt获取路径的方法：

1.程序所在路径：

// 当前程序所在路径+exe
qDebug()<<qApp->applicationDirPath();
//当前程序所在路径 
qDebug()<<qApp->applicationFilePath();

2.当前工作路径：

QString QDir::currentPath()

3.用户目录路径：

qDebug()<<QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
//output:"C:/Users/Administrator"
QStandardPaths::standardLocations(QStandardPaths::HomeLocation);
//output:("C:/Users/Administrator")

4.我的文档路径：

qDebug()<<"writableDocuments"<<QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
//output:"C:/Users/Administrator/Documents"
qDebug()<<"standDocuments"<<QStandardPaths::standardLocations(QStandardPaths::DocumentsLocation);
//output:("C:/Users/Administrator/Documents")

5.桌面路径

QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);
QStandardPaths::standardLocations(QStandardPaths::DesktopLocation);

6.程序数据存放路径

QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation);
//output:"C:/Users/Administrator/AppData/Roaming/AppName"
QStandardPaths::standardLocations(QStandardPaths::AppConfigLocation);
//output:"C:/Users/Administrator/AppData/Roaming/AppName"

7.临时文件路径

QStandardPaths::writableLocation(QStandardPaths::TempLocation);
QStandardPaths::standardLocations(QStandardPaths::TempLocation);
QDir::tempPath()