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6 ** This file is part of the documentation of the Qt Toolkit.
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49 ****************************************************************************/
50
51 //! [0]
52 QFile data("output.txt");
53 if (data.open(QFile::WriteOnly | QFile::Truncate)) {
54 QTextStream out(&data);
55 out << "Result: " << qSetFieldWidth(10) << left << 3.14 << 2.7;
56 // writes "Result: 3.14 2.7 "
57 }
58 //! [0]
59
60
61 //! [1]
62 QTextStream stream(stdin);
63 QString line;
64 while (stream.readLineInto(&line)) {
65 ...
66 }
67 //! [1]
68
69
70 //! [2]
71 QTextStream in("0x50 0x20");
72 int firstNumber, secondNumber;
73
74 in >> firstNumber; // firstNumber == 80
75 in >> dec >> secondNumber; // secondNumber == 0
76
77 char ch;
78 in >> ch; // ch == 'x'
79 //! [2]
80
81
82 //! [3]
main(int argc,char * argv[])83 int main(int argc, char *argv[])
84 {
85 // read numeric arguments (123, 0x20, 4.5...)
86 for (int i = 1; i < argc; ++i) {
87 int number;
88 QTextStream in(argv[i]);
89 in >> number;
90 ...
91 }
92 }
93 //! [3]
94
95
96 //! [4]
97 QString str;
98 QTextStream in(stdin);
99 in >> str;
100 //! [4]
101
102
103 //! [5]
104 QString s;
105 QTextStream out(&s);
106 out.setFieldWidth(10);
107 out.setFieldAlignment(QTextStream::AlignCenter);
108 out.setPadChar('-');
109 out << "Qt" << "rocks!";
110 //! [5]
111
112
113 //! [6]
114 ----Qt------rocks!--
115 //! [6]
116
117
118 //! [7]
119 QTextStream in(file);
120 QChar ch1, ch2, ch3;
121 in >> ch1 >> ch2 >> ch3;
122 //! [7]
123
124
125 //! [8]
126 QTextStream out(stdout);
127 out << "Qt rocks!" << Qt::endl;
128 //! [8]
129
130
131 //! [9]
132 stream << '\n' << Qt::flush;
133 //! [9]
134
135
136 //! [10]
137 QTextStream out(&file);
138 out.setCodec("UTF-8");
139 //! [10]
140