QDesktopServices::openUrl() 不工作 Qt
QDesktopServices::openUrl() not working Qt
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,但未打开浏览器。请帮助我。
您必须使用 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();
}
或 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:
您需要在 Qt 中启用 C++11,为此请查看以下问题:How to enable C++11 in Qt Creator?,这表明您在 .pro
中添加 CONFIG += c++11
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,但未打开浏览器。请帮助我。
您必须使用 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();
}
或 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:
您需要在 Qt 中启用 C++11,为此请查看以下问题:How to enable C++11 in Qt Creator?,这表明您在 .pro
中添加CONFIG += c++11