3 files changed, 18 insertions, 12 deletions
diff --git a/src/corelib/io/qprocess.cpp b/src/corelib/io/qprocess.cpp
index 2ee680a7c6..890867cd51 100644
--- a/src/corelib/io/qprocess.cpp
+++ b/src/corelib/io/qprocess.cpp
@@ -2147,6 +2147,10 @@ void QProcess::start(OpenMode mode)
     \endlist
     All other properties of the QProcess object are ignored.
 
+    \note The called process inherits the console window of the calling
+    process. To suppress console output, redirect standard/error output to
+    QProcess::nullDevice().
+
     \sa start()
     \sa startDetached(const QString &program, const QStringList &arguments,
                       const QString &workingDirectory, qint64 *pid)
diff --git a/src/corelib/io/qprocess_unix.cpp b/src/corelib/io/qprocess_unix.cpp
index a849519635..713af9bd40 100644
--- a/src/corelib/io/qprocess_unix.cpp
+++ b/src/corelib/io/qprocess_unix.cpp
@@ -949,16 +949,14 @@ bool QProcessPrivate::startDetached(qint64 *pid)
             qt_safe_close(pidPipe[1]);
 
             // copy the stdin socket if asked to (without closing on exec)
-            if (inputChannelMode != QProcess::ForwardedInputChannel)
+            if (stdinChannel.type == Channel::Redirect)
                 qt_safe_dup2(stdinChannel.pipe[0], STDIN_FILENO, 0);
 
             // copy the stdout and stderr if asked to
-            if (processChannelMode != QProcess::ForwardedChannels) {
-                if (processChannelMode != QProcess::ForwardedOutputChannel)
-                    qt_safe_dup2(stdoutChannel.pipe[1], STDOUT_FILENO, 0);
-                if (processChannelMode != QProcess::ForwardedErrorChannel)
-                    qt_safe_dup2(stderrChannel.pipe[1], STDERR_FILENO, 0);
-            }
+            if (stdoutChannel.type == Channel::Redirect)
+                qt_safe_dup2(stdoutChannel.pipe[1], STDOUT_FILENO, 0);
+            if (stderrChannel.type == Channel::Redirect)
+                qt_safe_dup2(stderrChannel.pipe[1], STDERR_FILENO, 0);
 
             if (!encodedWorkingDirectory.isEmpty()) {
                 if (QT_CHDIR(encodedWorkingDirectory.constData()) == -1)
diff --git a/src/corelib/io/qprocess_win.cpp b/src/corelib/io/qprocess_win.cpp
index 2e4b5d9cef..1f7a49379d 100644
--- a/src/corelib/io/qprocess_win.cpp
+++ b/src/corelib/io/qprocess_win.cpp
@@ -893,6 +893,11 @@ static bool startDetachedUacPrompt(const QString &programIn, const QStringList &
     return true;
 }
 
+static Q_PIPE pipeOrStdHandle(Q_PIPE pipe, DWORD handleNumber)
+{
+    return pipe != INVALID_Q_PIPE ? pipe : GetStdHandle(handleNumber);
+}
+
 bool QProcessPrivate::startDetached(qint64 *pid)
 {
     static const DWORD errorElevationRequired = 740;
@@ -925,15 +930,14 @@ bool QProcessPrivate::startDetached(qint64 *pid)
                                  0, 0, 0,
                                  STARTF_USESTDHANDLES,
                                  0, 0, 0,
-                                 stdinChannel.pipe[0], stdoutChannel.pipe[1], stderrChannel.pipe[1]
+                                 pipeOrStdHandle(stdinChannel.pipe[0], STD_INPUT_HANDLE),
+                                 pipeOrStdHandle(stdoutChannel.pipe[1], STD_OUTPUT_HANDLE),
+                                 pipeOrStdHandle(stderrChannel.pipe[1], STD_ERROR_HANDLE)
                                };
 
-    const bool inheritHandles = stdinChannel.type == Channel::Redirect
-            || stdoutChannel.type == Channel::Redirect
-            || stderrChannel.type == Channel::Redirect;
     QProcess::CreateProcessArguments cpargs = {
         nullptr, reinterpret_cast<wchar_t *>(const_cast<ushort *>(args.utf16())),
-        nullptr, nullptr, inheritHandles, dwCreationFlags, envPtr,
+        nullptr, nullptr, true, dwCreationFlags, envPtr,
         workingDirectory.isEmpty()
             ? nullptr : reinterpret_cast<const wchar_t *>(workingDirectory.utf16()),
         &startupInfo, &pinfo