//! [0]
DEFINES += QT_NO_CAST_FROM_ASCII \
           QT_NO_CAST_TO_ASCII
//! [0]


//! [1]
url = QLatin1String("http://www.unicode.org/")
//! [1]


//! [2]
d = 12.34;
str = QString("delta: %1").arg(d, 0, 'E', 3)
# str == "delta: 1.234E+01"
//! [2]


//! [3]
if str == "auto" || str == "extern" || str == "static" || str == "register":
    ...
//! [3]


//! [4]
if str == QString("auto") ||
   str == QString("extern") ||
   str == QString("static") ||
   str == QString("register"):
    ...
//! [4]


//! [5]
if str == QLatin1String("auto") ||
   str == QLatin1String("extern") ||
   str == QLatin1String("static") || 
   str == QLatin1String("register"):
    ...
//! [5]


//! [6]
label = QLabel(QLatin1String("MOD"), self)
//! [6]