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50
51#include <stdio.h>
52
53#include <QtCore/QCoreApplication>
54#include <QtCore/QFile>
55#include <QtCore/QDebug>
56#include <QtCore/QProcess>
57#include <QtDBus/QtDBus>
58
59#include "ping-common.h"
60#include "complexping.h"
61
62void Ping::start(const QString &name)
63{
64 if (name != SERVICE_NAME)
65 return;
66
67 // open stdin for reading
68 qstdin.open(stdin, ioFlags: QIODevice::ReadOnly);
69
70 // find our remote
71 iface = new QDBusInterface(SERVICE_NAME, "/", "org.example.QtDBus.ComplexPong.Pong",
72 QDBusConnection::sessionBus(), this);
73 if (!iface->isValid()) {
74 fprintf(stderr, format: "%s\n",
75 qPrintable(QDBusConnection::sessionBus().lastError().message()));
76 QCoreApplication::instance()->quit();
77 }
78
79 connect(sender: iface, SIGNAL(aboutToQuit()), receiver: QCoreApplication::instance(), SLOT(quit()));
80
81 while (true) {
82 printf(format: "Ask your question: ");
83
84 QString line = QString::fromLocal8Bit(str: qstdin.readLine()).trimmed();
85 if (line.isEmpty()) {
86 iface->call(method: "quit");
87 return;
88 } else if (line == "value") {
89 QVariant reply = iface->property(name: "value");
90 if (!reply.isNull())
91 printf(format: "value = %s\n", qPrintable(reply.toString()));
92 } else if (line.startsWith(s: "value=")) {
93 iface->setProperty(name: "value", value: line.mid(position: 6));
94 } else {
95 QDBusReply<QDBusVariant> reply = iface->call(method: "query", args&: line);
96 if (reply.isValid())
97 printf(format: "Reply was: %s\n", qPrintable(reply.value().variant().toString()));
98 }
99
100 if (iface->lastError().isValid())
101 fprintf(stderr, format: "Call failed: %s\n", qPrintable(iface->lastError().message()));
102 }
103}
104
105int main(int argc, char **argv)
106{
107 QCoreApplication app(argc, argv);
108
109 if (!QDBusConnection::sessionBus().isConnected()) {
110 fprintf(stderr, format: "Cannot connect to the D-Bus session bus.\n"
111 "To start it, run:\n"
112 "\teval `dbus-launch --auto-syntax`\n");
113 return 1;
114 }
115
116 QDBusServiceWatcher serviceWatcher(SERVICE_NAME, QDBusConnection::sessionBus(),
117 QDBusServiceWatcher::WatchForRegistration);
118
119 Ping ping;
120 QObject::connect(sender: &serviceWatcher, signal: &QDBusServiceWatcher::serviceRegistered,
121 receiver: &ping, slot: &Ping::start);
122
123 QProcess pong;
124 pong.start(command: "./complexpong");
125
126 app.exec();
127}
128

source code of qtbase/examples/dbus/complexpingpong/complexping.cpp