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50
51
wrapInFunction()52 void wrapInFunction()
53 {
54
55 //! [0]
56 QProcess builder;
57 builder.setProcessChannelMode(QProcess::MergedChannels);
58 builder.start("make", QStringList() << "-j2");
59
60 if (!builder.waitForFinished())
61 qDebug() << "Make failed:" << builder.errorString();
62 else
63 qDebug() << "Make output:" << builder.readAll();
64 //! [0]
65
66
67 //! [1]
68 QProcess more;
69 more.start("more");
70 more.write("Text to display");
71 more.closeWriteChannel();
72 // QProcess will emit readyRead() once "more" starts printing
73 //! [1]
74
75
76 //! [2]
77 command1 | command2
78 //! [2]
79
80
81 //! [3]
82 QProcess process1;
83 QProcess process2;
84
85 process1.setStandardOutputProcess(&process2);
86
87 process1.start("command1");
88 process2.start("command2");
89 //! [3]
90
91
92 //! [4]
93 class SandboxProcess : public QProcess
94 {
95 ...
96 protected:
97 void setupChildProcess() override;
98 ...
99 };
100
101 void SandboxProcess::setupChildProcess()
102 {
103 // Drop all privileges in the child process, and enter
104 // a chroot jail.
105 #if defined Q_OS_UNIX
106 ::setgroups(0, 0);
107 ::chroot("/etc/safe");
108 ::chdir("/");
109 ::setgid(safeGid);
110 ::setuid(safeUid);
111 ::umask(0);
112 #endif
113 }
114
115 //! [4]
116
117
118 //! [5]
119 QProcess process;
120 process.start("del /s *.txt");
121 // same as process.start("del", QStringList() << "/s" << "*.txt");
122 ...
123 //! [5]
124
125
126 //! [6]
127 QProcess process;
128 process.start("dir \"My Documents\"");
129 //! [6]
130
131
132 //! [7]
133 QProcess process;
134 process.start("dir \"Epic 12\"\"\" Singles\"");
135 //! [7]
136
137
138 //! [8]
139 QStringList environment = QProcess::systemEnvironment();
140 // environment = {"PATH=/usr/bin:/usr/local/bin",
141 // "USER=greg", "HOME=/home/greg"}
142 //! [8]
143
144 }
145