diff options
Diffstat (limited to 'src/corelib/io/qprocess.cpp')
| -rw-r--r-- | src/corelib/io/qprocess.cpp | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/corelib/io/qprocess.cpp b/src/corelib/io/qprocess.cpp index d473281acc..27a8bce3fe 100644 --- a/src/corelib/io/qprocess.cpp +++ b/src/corelib/io/qprocess.cpp @@ -533,7 +533,11 @@ void QProcessPrivate::Channel::clear() MergedChannels before starting the process to activative this feature. You also have the option of forwarding the output of the running process to the calling, main process, by passing - ForwardedChannels as the argument. + ForwardedChannels as the argument. It is also possible to forward + only one of the output channels - typically one would use + ForwardedErrorChannel, but ForwardedOutputChannel also exists. + Note that using channel forwarding is typically a bad idea in GUI + applications - you should present errors graphically instead. Certain processes need special environment settings in order to operate. You can set environment variables for your process by @@ -625,6 +629,17 @@ void QProcessPrivate::Channel::clear() writes to its standard output and standard error will be written to the standard output and standard error of the main process. + \value ForwardedErrorChannel QProcess manages the standard output + of the running process, but forwards its standard error onto the + main process. This reflects the typical use of command line tools + as filters, where the standard output is redirected to another + process or a file, while standard error is printed to the console + for diagnostic purposes. + (This value was introduced in Qt 5.2.) + + \value ForwardedOutputChannel Complementary to ForwardedErrorChannel. + (This value was introduced in Qt 5.2.) + \note Windows intentionally suppresses output from GUI-only applications to inherited consoles. This does \e not apply to output redirected to files or pipes. |