你可以列出所有部件在应用程序通过使用 QApplication::allWidgets()
.
然后,你可以列出所有信号的每个部件(用 QObject::metaObject()
),并将它们连接到一个 记录仪.
一个简单的例子:
class Spy: public QObject {
Q_OBJECT
public:
Spy();
public slots:
void log();
};
void Spy::log()
{
auto i = senderSignalIndex(); // The signal that fired this slot
auto signal = sender()->metaObject()->method(i);
qDebug() << sender() << signal.methodSignature();
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
Spy* spy = new Spy();
QMetaMethod log = spy->metaObject()->method(spy->metaObject()->indexOfSlot("log()")); // in order to use the right QObject::connect signature
for (auto widget: a.allWidgets())
{
auto metaObject = widget->metaObject();
for (int i = 0; i != metaObject->methodCount(); ++i)
{
auto method = metaObject->method(i);
if (method.methodType() != QMetaMethod::Signal) // We want to connect all the signals. We don't care about the other methods
continue;
widget->connect(widget, method, spy, log);
}
}
return a.exec();
}
你就会有改善的代码如果你想要显示的参数。
你也可以过滤器的对象只记录重要的信号,(前记录的只有 clicked
信号从按钮)