本文整理汇总了C++中QLibrary::queryInterface方法的典型用法代码示例。如果您正苦于以下问题：C++ QLibrary::queryInterface方法的具体用法？C++ QLibrary::queryInterface怎么用？C++ QLibrary::queryInterface使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QLibrary的用法示例。
在下文中一共展示了QLibrary::queryInterface方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: load
/**
* \brief Load a OPluginItem for the specified interface
* This will open the resource of the OPluginItem::path() and then will query
* if the Interface specified in the uuid is available and then will manage the
* resource and Interface.
*
* @param item The OPluginItem that should be loaded
* @param uuid The Interface to query for
*
* @return Either 0 in case of failure or the Plugin as QUnknownInterface*
*/
QUnknownInterface* OGenericPluginLoader::load( const OPluginItem& item, const QUuid& uuid) {
/*
* Check if there could be a library
*/
QString pa = item.path();
if ( pa.isEmpty() )
return 0l;
/*
* See if we get a library
* return if we've none
*/
setSafeMode( pa, true );
QLibrary *lib = Internal::OPluginLibraryHolder::self()->ref( pa );
if ( !lib ) {
setSafeMode();
return 0l;
}
/**
* try to load the plugin and just in case initialize the pointer to a pointer again
*/
QUnknownInterface* iface=0;
if ( lib->queryInterface( uuid, &iface ) == QS_OK ) {
installTranslators( item.name() );
m_library.insert( iface, lib );
}else
iface = 0;
setSafeMode();
return iface;
}示例2: loadRenderers
/*!
Load any font renderer plugins that are available and make the fonts
that the plugins can read available.
*/
void FontDatabase::loadRenderers()
{
#ifndef QWS
return;
#else
#ifndef QT_NO_COMPONENT
if ( !factoryList )
factoryList = new QValueList<FontFactory>;
QValueList<FontFactory>::Iterator mit;
for ( mit = factoryList->begin(); mit != factoryList->end(); ++mit ) {
qt_fontmanager->factories.setAutoDelete( false );
qt_fontmanager->factories.removeRef( (*mit).factory );
qt_fontmanager->factories.setAutoDelete( true );
(*mit).interface->release();
(*mit).library->unload();
delete (*mit).library;
}
factoryList->clear();
QString path = QPEApplication::qpeDir() + "plugins/fontfactories";
#ifdef Q_OS_MACX
QDir dir( path, "lib*.dylib" );
#else
QDir dir( path, "lib*.so" );
#endif
if ( !dir.exists())
return;
QStringList list = dir.entryList();
QStringList::Iterator it;
for ( it = list.begin(); it != list.end(); ++it ) {
FontFactoryInterface *iface = 0;
QLibrary *lib = new QLibrary( path + "/" + *it );
if ( lib->queryInterface( IID_FontFactory, (QUnknownInterface**)&iface ) == QS_OK ) {
FontFactory factory;
factory.library = lib;
factory.interface = iface;
factory.factory = factory.interface->fontFactory();
factoryList->append( factory );
qt_fontmanager->factories.append( factory.factory );
readFonts( factory.factory );
} else {
delete lib;
}
}
#endif
#endif
}