Qt QTextBrowser的一个小例子
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Large applications may require more online help than tooltips, status tips, and "What's This?" help can reasonably show. A simple solution to this is to provide a help browser. Applications that include a help browser typically have a Help entry in the main window's Help menu and a Help button in every dialog.
In this section, we present the simple help browser shown in figure 1 and explain how it can be used within an application. The window uses aQTextBrowser to display help pages that are marked up with an HTML-based syntax. QTextBrowser can handle a lot of HTML tags, so it is ideal for this purpose.
上面那段英文想看就看看,不想看就不要看了,关于QTextBrowser是什么这里就不说了,Qt官网上肯定有的,谷歌百度都可以找到的。
这个只是一个很小例子。希望能对大家学习Qt能有帮助。
main.cpp
#include <QtGui/QApplication>#include "mainwindow.h"#include "helpbrowser.h"#include <QString>int main(int argc, char *argv[]){ QApplication a(argc, argv); /*MainWindow w; w.show();*/ const QString path("/root/hjm/wroking/Help/helpFile1130/Help_File1130"); const QString page("home.html"); helpbrowser h(path,page); h.setGeometry(500,300,500,400); h.show(); return a.exec();}
helpbrowser.h
#ifndef HELPBROWSER_H#define HELPBROWSER_H#include <QWidget>#include <QPushButton>#include <QTextBrowser>class QPushButton;class QTextBrowser;class helpbrowser : public QWidget{ Q_OBJECTpublic: explicit helpbrowser(const QString &path,const QString &page,QWidget *parent = 0); //static void showpage(const QString &page);private slots: void updateWindowTitle();private: QTextBrowser *textBrowser; QPushButton *homeButton; QPushButton *backButton; QPushButton *closeButton; signals: public slots: };#endif // HELPBROWSER_H
helpbrowser.cpp
#include "helpbrowser.h"#include <QtGui>#include <QString>helpbrowser::helpbrowser(const QString &path,const QString &page,QWidget *parent) : QWidget(parent){ setAttribute(Qt::WA_DeleteOnClose); setAttribute(Qt::WA_GroupLeader); textBrowser = new QTextBrowser; homeButton =new QPushButton(tr("&Home")); backButton =new QPushButton(tr("&Back")); closeButton =new QPushButton(tr("Close")); closeButton->setShortcut(tr("Esc")); QHBoxLayout *buttonLayout =new QHBoxLayout; buttonLayout->addWidget(homeButton); buttonLayout->addWidget(backButton); buttonLayout->addStretch(); buttonLayout->addWidget(closeButton); QVBoxLayout *mainLayout =new QVBoxLayout; mainLayout->addLayout(buttonLayout); mainLayout->addWidget(textBrowser); setLayout(mainLayout); connect(homeButton,SIGNAL(clicked()),textBrowser,SLOT(home())); connect(backButton,SIGNAL(clicked()),textBrowser,SLOT(backward())); connect(closeButton,SIGNAL(clicked()),this,SLOT(close())); connect(textBrowser,SIGNAL(sourceChange(const QUrl&)),this,SLOT(updateWindowTitle())); textBrowser->setSearchPaths(QStringList()<<path<<":/images"); textBrowser->setSource(page);}void helpbrowser::updateWindowTitle(){ setWindowTitle(tr("Help:%1").arg(textBrowser->documentTitle()));}
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