assistant.cpp Example File
simpletextviewer/assistant.cpp
#include "assistant.h"
#include <QByteArray>
#include <QDir>
#include <QLibraryInfo>
#include <QMessageBox>
#include <QProcess>
Assistant::Assistant()
: proc(0)
{
}
Assistant::~Assistant()
{
if (proc && proc->state() == QProcess::Running) {
proc->terminate();
proc->waitForFinished(3000);
}
delete proc;
}
void Assistant::showDocumentation(const QString &page)
{
if (!startAssistant())
return;
QByteArray ba("SetSource ");
ba.append("qthelp://org.qt-project.examples.simpletextviewer/doc/");
proc->write(ba + page.toLocal8Bit() + '\n');
}
bool Assistant::startAssistant()
{
if (!proc)
proc = new QProcess();
if (proc->state() != QProcess::Running) {
QString app = QLibraryInfo::location(QLibraryInfo::BinariesPath) + QDir::separator();
#if !defined(Q_OS_MAC)
app += QLatin1String("assistant");
#else
app += QLatin1String("Assistant.app/Contents/MacOS/Assistant");
#endif
QStringList args;
args << QLatin1String("-collectionFile")
<< QLibraryInfo::location(QLibraryInfo::ExamplesPath)
+ QLatin1String("/assistant/simpletextviewer/documentation/simpletextviewer.qhc")
<< QLatin1String("-enableRemoteControl");
proc->start(app, args);
if (!proc->waitForStarted()) {
QMessageBox::critical(nullptr,
tr("Simple Text Viewer"),
tr("Unable to launch Qt Assistant (%1)").arg(app));
return false;
}
}
return true;
}