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50
51#include <stdio.h>
52
53#include <QtCore/QCoreApplication>
54#include <QtDBus/QtDBus>
55
56#include "ping-common.h"
57
58int main(int argc, char **argv)
59{
60 QCoreApplication app(argc, argv);
61
62 if (!QDBusConnection::sessionBus().isConnected()) {
63 fprintf(stderr, format: "Cannot connect to the D-Bus session bus.\n"
64 "To start it, run:\n"
65 "\teval `dbus-launch --auto-syntax`\n");
66 return 1;
67 }
68
69 QDBusInterface iface(SERVICE_NAME, "/", "", QDBusConnection::sessionBus());
70 if (iface.isValid()) {
71 QDBusReply<QString> reply = iface.call(method: "ping", args: argc > 1 ? argv[1] : "");
72 if (reply.isValid()) {
73 printf(format: "Reply was: %s\n", qPrintable(reply.value()));
74 return 0;
75 }
76
77 fprintf(stderr, format: "Call failed: %s\n", qPrintable(reply.error().message()));
78 return 1;
79 }
80
81 fprintf(stderr, format: "%s\n",
82 qPrintable(QDBusConnection::sessionBus().lastError().message()));
83 return 1;
84}
85

source code of qtbase/examples/dbus/pingpong/ping.cpp