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POQt: Open links with target in default browser, without leaking memory
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  1. POQt: Open links with target in default browser, without leaking memory
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    copied!<p>Searching through the Internet, I've come across so many ways, mostly nonfunctional, nonspecific, or partially functional, to do various things with <code>QWebView</code> and opening URLs.</p> <p>After much swearing and cursing, I've managed to get an example to do what I want, which is open normal links normally, and open anything that requests a new window in the external browser; however, there's a hitch. It leaks memory, because I make a bunch of extra <code>WebViews</code> that aren't cleaned up until the process exits. How can I do this without leaking memory?</p> <p>Please forgive my rather sophomoric understanding of Qt in advance. I've only been using it for a handful of hours at this point.</p> <p>SSCCE:</p> <h3>test.hpp</h3> <pre><code>#include &lt;QMainWindow&gt; #include &lt;QWebView&gt; class Window : public QMainWindow { Q_OBJECT public: Window(); private: QWebView* m_web; private slots: }; class WebPage : public QWebPage { Q_OBJECT public: bool acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &amp;request, NavigationType type); }; class WebView : public QWebView { Q_OBJECT public: QWebView* createWindow(QWebPage::WebWindowType type); }; </code></pre> <h3>test.cpp</h3> <pre><code>#include &lt;QApplication&gt; #include &lt;QGridLayout&gt; #include &lt;QNetworkRequest&gt; #include &lt;QDesktopServices&gt; #include "test.hpp" Window::Window() : QMainWindow() { m_web = new WebView; m_web-&gt;setHtml("&lt;div align=\"center\"&gt;&lt;a href=\"http://www.google.com/\"&gt;Same Window&lt;/a&gt; &lt;a href=\"http://www.google.com/\" target=\"_blank\"&gt;New Window&lt;/a&gt;&lt;/div&gt;"); setCentralWidget(m_web); } bool WebPage::acceptNavigationRequest(QWebFrame*, QNetworkRequest const&amp; request, NavigationType) { QDesktopServices::openUrl(request.url()); return false; } QWebView* WebView::createWindow(QWebPage::WebWindowType) { auto res = new WebView; auto page = new WebPage; res-&gt;setPage(page); return res; } int main(int argc, char *argv[]) { QApplication a(argc, argv); Window w; w.show(); return a.exec(); } </code></pre> <h3>test.pro</h3> <pre><code>QT += core gui network webkitwidgets widgets TEMPLATE = app TARGET = test INCLUDEPATH += . CONFIG += c++11 # Input SOURCES += test.cpp HEADERS += test.hpp </code></pre> <h3>To Compile and Run</h3> <pre><code>qmake test.pro make ./test </code></pre>
 

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