Long live Qt!

1 files changed, 94 insertions, 0 deletions

diff --git a/doc/src/snippets/code/src_corelib_io_qprocess.cpp b/doc/src/snippets/code/src_corelib_io_qprocess.cpp
new file mode 100644
index 0000000..6eb8ccb
--- /dev/null
+++ b/doc/src/snippets/code/src_corelib_io_qprocess.cpp
@@ -0,0 +1,94 @@
+
+void wrapInFunction()
+{
+
+//! [0]
+QProcess builder;
+builder.setProcessChannelMode(QProcess::MergedChannels);
+builder.start("make", QStringList() << "-j2");
+
+if (!builder.waitForFinished())
+    qDebug() << "Make failed:" << builder.errorString();
+else
+    qDebug() << "Make output:" << builder.readAll();
+//! [0]
+
+
+//! [1]
+QProcess more;
+more.start("more");
+more.write("Text to display");
+more.closeWriteChannel();
+// QProcess will emit readyRead() once "more" starts printing
+//! [1]
+
+
+//! [2]
+command1 | command2
+//! [2]
+
+
+//! [3]
+QProcess process1;
+QProcess process2;
+
+process1.setStandardOutputProcess(process2);
+
+process1.start("command1");
+process2.start("command2");
+//! [3]
+
+
+//! [4]
+class SandboxProcess : public QProcess
+{
+    ...
+ protected:
+     void setupChildProcess();
+    ...
+};
+
+void SandboxProcess::setupChildProcess()
+{
+    // Drop all privileges in the child process, and enter
+    // a chroot jail.
+#if defined Q_OS_UNIX
+    ::setgroups(0, 0);
+    ::chroot("/etc/safe");
+    ::chdir("/");
+    ::setgid(safeGid);
+    ::setuid(safeUid);
+    ::umask(0);
+#endif
+}
+
+//! [4]
+
+
+//! [5]
+QProcess process;
+process.start("del /s *.txt");
+// same as process.start("del", QStringList() << "/s" << "*.txt");
+...
+//! [5]
+
+
+//! [6]
+QProcess process;
+process.start("dir \"My Documents\"");
+//! [6]
+
+
+//! [7]
+QProcess process;
+process.start("dir \"\"\"My Documents\"\"\"");
+//! [7]
+
+
+//! [8]
+QStringList environment = QProcess::systemEnvironment();
+// environment = {"PATH=/usr/bin:/usr/local/bin",
+//                "USER=greg", "HOME=/home/greg"}
+//! [8]
+
+}