Qt资源系统中文件的最后修改日期

Question

Normally you can get last modified date easily with QFileInfo::lastModified(). However this doesn't work when a file inside Qt's resource system is used

QFileInfo resourceInfo("://resource.txt");
qDebug() << resourceInfo.lastModified().toString() // returns ""

Is there a possibility to find out the last modified date without temporarily copying the file from the resources to the file system?

Answer 1

当您将文件添加到资源时，它会被编译为最终的可执行二进制文件，因此文件系统中没有文件的概念，这就是为什么lastModified不返回值。