QDesktopServices :: openUrl()不工作Qt

时间:2018-05-17 04:26:03

标签: c++ qt qt5 qpushbutton qdesktopservices

这是我的代码:

QPixmap map(":/Medal.jpg");
QIcon ico(map);
ico.addPixmap(map);
QPushButton *p = new QPushButton;
p->setIcon(ico);
QString link = "http://www.google.com";
QObject::connect(p, SIGNAL(clicked()),window,SLOT(QDesktopServices::openUrl(QUrl (link))));

图片正在显示,但它没有打开浏览器。请帮助我。

1 个答案:

答案 0 :(得分:1)

你必须使用lambda函数:

#include <QApplication>
#include <QDesktopServices>
#include <QPushButton>
#include <QUrl>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QPushButton p("Click me");
    QString link = "http://www.google.com";
    QObject::connect(&p, &QPushButton::clicked, [&link](){
        QDesktopServices::openUrl(QUrl(link));
    });
    p.show();

    return a.exec();
}

std::bind()

#include <QApplication>
#include <QDesktopServices>
#include <QPushButton>
#include <QUrl>
#include <functional>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QPushButton p("Click me");
    QString link = "http://www.google.com";
    QObject::connect(&p, &QPushButton::clicked, std::bind(QDesktopServices::openUrl, QUrl(link)));
    p.show();

    return a.exec();
}

注意:

您需要在Qt中启用C ++ 11,对于此次审核,我们会考虑以下问题:How to enable C++11 in Qt Creator?,表示您在.pro中添加了CONFIG += c++11