1 files changed, 59 insertions, 0 deletions
diff --git a/doc/src/snippets/code/src_corelib_io_qiodevice.cpp b/doc/src/snippets/code/src_corelib_io_qiodevice.cpp
new file mode 100644
index 0000000..422ca11
--- /dev/null
+++ b/doc/src/snippets/code/src_corelib_io_qiodevice.cpp
@@ -0,0 +1,59 @@
+//! [0]
+QProcess gzip;
+gzip.start("gzip", QStringList() << "-c");
+if (!gzip.waitForStarted())
+    return false;
+
+gzip.write("uncompressed data");
+
+QByteArray compressed;
+while (gzip.waitForReadyRead())
+    compressed += gzip.readAll();
+//! [0]
+
+
+//! [1]
+qint64 CustomDevice::bytesAvailable() const
+{
+    return buffer.size() + QIODevice::bytesAvailable();
+}
+//! [1]
+
+
+//! [2]
+QFile file("box.txt");
+if (file.open(QFile::ReadOnly)) {
+    char buf[1024];
+    qint64 lineLength = file.readLine(buf, sizeof(buf));
+    if (lineLength != -1) {
+        // the line is available in buf
+    }
+}
+//! [2]
+
+
+//! [3]
+bool CustomDevice::canReadLine() const
+{
+    return buffer.contains('\n') || QIODevice::canReadLine();
+}
+//! [3]
+
+
+//! [4]
+bool isExeFile(QFile *file)
+{
+    char buf[2];
+    if (file->peek(buf, sizeof(buf)) == sizeof(buf))
+        return (buf[0] == 'M' && buf[1] == 'Z');
+    return false;
+}
+//! [4]
+
+
+//! [5]
+bool isExeFile(QFile *file)
+{
+    return file->peek(2) == "MZ";
+}
+//! [5]