Qt无法创建/写入C:\ [英] Qt cannot cannot create/write to C:\

问题描述

我正在编写一个Qt程序(最初是Windows 7的4.7)，需要写入已安装的目录(C:\ Program Files ...).当我尝试写入将被保护"的位置(程序文件，C:\等)时，没有文件正在创建.但是，QFile没有给我任何错误代码(error()返回0，这意味着它工作正常).

I am writing a Qt program (4.7 for windows 7 initially) that requires writing to the installed directory (C:\Program Files...). No files are being created when I try to write to a location that would be "protected" (program files, C:\ etc). However, QFile is not giving me any error code (error() is returning 0 which means it worked fine).

这是我使用的代码片段，无法正常工作.我即将在程序中关闭文件.

Here is a code snippit that I am using that is not working. I am closing the file its just much later in the program.

QApplication a(argc，argv);

QApplication a(argc, argv);

// Setting plugin paths.
QStringList paths = QCoreApplication::libraryPaths();
paths.append(QCoreApplication::applicationDirPath());
QCoreApplication::setLibraryPaths(paths);



// Debug file.
QString path = QCoreApplication::applicationDirPath() + "/debug.dat";
//QFile debugFile(QCoreApplication::applicationDirPath() + "/debug.dat");
QFile debugFile("C:/debug.txt");
qDebug() << debugFile.error();
debugFile.setPermissions(QFile::WriteUser | QFile::WriteGroup | QFile::WriteOwner | QFile::WriteOther);
debugFile.open(QFile::WriteOnly);
QTextStream debugStream(&debugFile);

// Processing the arguments.
debugStream << QString("Processing Arguments\n");

有人对如何解决此问题有任何提示吗?

Does anyone have any tips on how to solve this problem?

感谢您的帮助，

杰克

添加清单文件是我选择解决此问题的途径.

Adding a manifest file is the route I choose to fix this problem.

感谢所有帮助.

推荐答案

您是否检查了是否未在VirtualStore中为该用户创建文件?在应用程序和服务日志"->"Microsoft"->"Windows"->"UacFileVirtualization"->可操作"下检查事件查看器".如果看到事件ID为5000的条目，则发生了FileCreateVirtualExclude事件.

Have you checked whether the file isn't created in the VirtualStore for that user? Check the Event Viewer under Applications and Services Logs -> Microsoft -> Windows -> UacFileVirtualization -> Operational. If you see entries with event ID 5000, a FileCreateVirtualExclude event has occurred.

检查是否未在%USERPROFILE%\AppData\Local\VirtualStore下创建文件.如果确实如此，则可能需要嵌入清单以请求所需的特权(即，关闭虚拟化.)

Check if the file didn't get created under %USERPROFILE%\AppData\Local\VirtualStore. If it did, you might need to embed a manifest requesting the required privileges (i.e., turning virtualization off.)

有关更多详细信息，请参见适用于Windows Vista的新UAC技术(向下滚动并查找虚拟化.)

For more details, see New UAC Technologies for Windows Vista (scroll down and look for Virtualization.)

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