C++程序如何获得自身路径（Qt源码）

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本文介绍了如何使用QStringQCoreApplication::applicationFilePath()静态方法来获取应用程序执行文件的完整路径。例如，在Linux环境下安装了Qt并运行正则表达式示例程序时，此函数将返回相应的绝对路径。

QString QCoreApplication::applicationFilePath () [static]

Returns the file path of the application executable.

For example, if you have installed Qt in the /usr/local/qt directory, and you run the regexp example, this function will return "/usr/local/qt/examples/tools/regexp/regexp".

Warning: On Linux, this function will try to get the path from the /proc file system. If that fails, it assumes that argv[0] contains the absolute file name of the executable. The function also assumes that the current directory has not been changed by the application.