main.cpp

Linux下的基于X11的图形开发环境。

#include <private/qstyleinterface_p.h>
#include <qobjectcleanuphandler.h>

#include "qwindowsxpstyle.h"

class WindowsXPStyle : public QStyleFactoryInterface, public QLibraryInterface
{
public:
    WindowsXPStyle();

    QRESULT queryInterface( const QUuid&, QUnknownInterface ** );
    Q_REFCOUNT;

    QStringList featureList() const;
    QStyle *create( const QString& );

    bool init();
    void cleanup();
    bool canUnload() const;

private:
    QObjectCleanupHandler styles;
};

WindowsXPStyle::WindowsXPStyle()
{
}

QRESULT WindowsXPStyle::queryInterface( const QUuid &uuid, QUnknownInterface **iface )
{
    if ( uuid == IID_QUnknown )
	*iface = (QUnknownInterface*)(QStyleFactoryInterface*)this;
    else if ( uuid == IID_QFeatureList )
	*iface = (QFeatureListInterface*)this;
    else if ( uuid == IID_QStyleFactory )
	*iface = (QStyleFactoryInterface*)this;
    else if ( uuid == IID_QLibrary )
	*iface = (QLibraryInterface*)this;
    else
        return QE_NOINTERFACE;

    (*iface)->addRef();

    return QS_OK;
}

QStringList WindowsXPStyle::featureList() const
{
    QStringList list;
    list << "WindowsXP";
    return list;
}

QStyle* WindowsXPStyle::create( const QString& s )
{
    if ( s.lower() == "windowsxp" ) {
	QStyle *style = new QWindowsXPStyle();
	styles.add( style );
	return style;
    }
    return 0;
}

bool WindowsXPStyle::init()
{
    return qWinVersion() == Qt::WV_XP;
}

void WindowsXPStyle::cleanup()
{
    styles.clear();
}

bool WindowsXPStyle::canUnload() const
{
    return styles.isEmpty();
}

Q_EXPORT_COMPONENT()
{
    Q_CREATE_INSTANCE( WindowsXPStyle )
}