This struct was introduced in Qt 6.6.
注意: This struct is only available on Unix platforms
This struct can be used to pass extra, Unix-specific configuration for the child process using QProcess::setUnixProcessParameters ().
Its members are:
When the QProcess::UnixProcessFlags::CloseFileDescriptors flag is set in the
flags
field,
QProcess
closes the application's open file descriptors before executing the child process. The descriptors 0, 1, and 2 (that is,
stdin
,
stdout
,和
stderr
) are left alone, along with the ones numbered lower than the value of the
lowestFileDescriptorToClose
字段。
All of the settings above can also be manually achieved by calling the respective POSIX function from a handler set with QProcess::setChildProcessModifier (). This structure allows QProcess to deal with any platform-specific differences, benefit from certain optimizations, and reduces code duplication. Moreover, if any of those functions fail, QProcess 将进入 QProcess::FailedToStart state, while the child process modifier callback is not allowed to fail.
另请参阅 QProcess::setUnixProcessParameters () 和 QProcess::setChildProcessModifier ().