1berry/qtbase
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pingpong example: Modernize the code

Browse Source 
Use qWarning()/std::cout instead of C IO functions.

Use default parameters for QDBusInterface's constructor.

Remove useless Q_SCRIPTABLE.

Use type-safe invokeMethod().

Extract a local variable for the used D-Bus connection.

Task-number: QTBUG-111366
Pick-to: 6.5
Change-Id: Idc38a7c1dd97d71308d9491193039744c759d6f2
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
This commit is contained in:
Ievgenii Meshcheriakov 2023-02-22 12:41:05 +01:00
parent 38ee9ee849
commit 07b8a5a409
3 changed files with 22 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
examples/dbus/pingpong/ping.cpp
View File

@ -8,32 +8,33 @@
#include <QDBusInterface>
#include <QDBusReply>
#include <stdio.h>
#include <iostream>
int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
if (!QDBusConnection::sessionBus().isConnected()) {
fprintf(stderr, "Cannot connect to the D-Bus session bus.\n"
"To start it, run:\n"
"\teval `dbus-launch --auto-syntax`\n");
auto connection = QDBusConnection::sessionBus();
if (!connection.isConnected()) {
qWarning("Cannot connect to the D-Bus session bus.\n"
"To start it, run:\n"
"\teval `dbus-launch --auto-syntax`\n");
return 1;
}
QDBusInterface iface(SERVICE_NAME, "/", "", QDBusConnection::sessionBus());
QDBusInterface iface(SERVICE_NAME, "/");
if (iface.isValid()) {
QDBusReply<QString> reply = iface.call("ping", argc > 1 ? argv[1] : "");
if (reply.isValid()) {
printf("Reply was: %s\n", qPrintable(reply.value()));
std::cout << "Reply was: " << qPrintable(reply.value()) << std::endl;
return 0;
}
fprintf(stderr, "Call failed: %s\n", qPrintable(reply.error().message()));
qWarning("Call failed: %s\n", qPrintable(reply.error().message()));
return 1;
}
fprintf(stderr, "%s\n",
qPrintable(QDBusConnection::sessionBus().lastError().message()));
qWarning("%s\n", qPrintable(connection.lastError().message()));
return 1;
}

23
examples/dbus/pingpong/pong.cpp
View File

@ -7,14 +7,10 @@
#include <QCoreApplication>
#include <QDBusConnection>
#include <QDBusError>
#include <QTimer>
#include <stdio.h>
#include <stdlib.h>
QString Pong::ping(const QString &arg)
{
QMetaObject::invokeMethod(QCoreApplication::instance(), "quit");
QMetaObject::invokeMethod(QCoreApplication::instance(), &QCoreApplication::quit);
return QString("ping(\"%1\") got called").arg(arg);
}
@ -22,21 +18,22 @@ int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
if (!QDBusConnection::sessionBus().isConnected()) {
fprintf(stderr, "Cannot connect to the D-Bus session bus.\n"
"To start it, run:\n"
"\teval `dbus-launch --auto-syntax`\n");
auto connection = QDBusConnection::sessionBus();
if (!connection.isConnected()) {
qWarning("Cannot connect to the D-Bus session bus.\n"
"To start it, run:\n"
"\teval `dbus-launch --auto-syntax`\n");
return 1;
}
if (!QDBusConnection::sessionBus().registerService(SERVICE_NAME)) {
fprintf(stderr, "%s\n",
qPrintable(QDBusConnection::sessionBus().lastError().message()));
if (!connection.registerService(SERVICE_NAME)) {
qWarning("%s\n", qPrintable(connection.lastError().message()));
exit(1);
}
Pong pong;
QDBusConnection::sessionBus().registerObject("/", &pong, QDBusConnection::ExportAllSlots);
connection.registerObject("/", &pong, QDBusConnection::ExportAllSlots);
app.exec();
return 0;

2
examples/dbus/pingpong/pong.h
View File

@ -10,7 +10,7 @@ class Pong: public QObject
{
Q_OBJECT
public slots:
Q_SCRIPTABLE QString ping(const QString &arg);
QString ping(const QString &arg);
};
#endif