Qt获取文件路径

# Qt可以获取系统中的标准用户变量：
# 添加头文件
#include <QStandardPaths>
 
# 示例： 获取桌面文件夹路径
 
QString desktop_path = QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);
 
 
＃ 以下为各变量：
        DesktopLocation,
        DocumentsLocation,
        FontsLocation,
        ApplicationsLocation,
        MusicLocation,
        MoviesLocation,
        PicturesLocation,
        TempLocation,
        HomeLocation,
        DataLocation,
        CacheLocation,
        GenericDataLocation,
        RuntimeLocation,
        ConfigLocation,
        DownloadLocation,
        GenericCacheLocation,
        GenericConfigLocation,
        AppDataLocation,
        AppConfigLocation,
        AppLocalDataLocation = DataLocation