我有一個完整的工作解決方案 - 使用插槽。然而,我不能按照Kurt所建議的那樣運行信號。
#include <QtGui/QApplication>
#include <QApplication>
#include <QDebug>
#include <QWebFrame>
#include <QWebPage>
#include <QWebView>
class MyJavaScriptOperations : public QObject {
Q_OBJECT
public:
QWebView *view;
MyJavaScriptOperations();
Q_INVOKABLE qint32 MultOfNumbers(int a, int b) {
qDebug() << a * b;
return (a*b);
}
public slots:
void callback();
public:
void firecb();
signals:
void done();
};
MyJavaScriptOperations::MyJavaScriptOperations()
{
view = new QWebView();
view->resize(400, 500);
connect(view->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()), this, SLOT(callback()));
view->load(QUrl("./shreyas.html"));
view->show();
qDebug()<<view;
}
void MyJavaScriptOperations::callback()
{
qDebug()<<"Sending hello text";
QString function = "f1()";
view->page()->mainFrame()->addToJavaScriptWindowObject("myoperations", this);
view->page()->mainFrame()->evaluateJavaScript("f1()");
done();
}
void MyJavaScriptOperations::firecb()
{
qDebug()<<"Emitting Signal";
done();
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MyJavaScriptOperations *jvs = new MyJavaScriptOperations;
jvs->firecb();
return a.exec();
}
#include "main.moc"
HTML文件的變化是 -
<head>
<script LANGUAGE="JavaScript">
function f1()
{
alert('f1 called from qtclass with message');
document.write("HELLLLLLLLL");
}
myoperations.callback(f1);
function f2()
{
var result = myoperations.MultOfNumbers(3,7);
document.write(result);
alert('f1 called from qtclass with message');
}
function f3()
{
alert('f3');
}
myoperations.done.connect(f3);
</script>
</head>
<body>
test html
<input type="button" value="click" onclick="f2()">
</body>
我想跟着你的答案,並做同樣的事情。但是,它不適合我。這是我的問題 - http://stackoverflow.com/questions/22037838/qt-qweb-callback-not-working-in-the-example-here。你能抽出一些時間回答嗎? – 2014-02-26 12:33:59