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qt'QFilePreview (./qt-2.1.0/src/dialogs/qfiledialog.h:62)

class Q_EXPORT QFilePreview
{
public:
    QFilePreview();
    virtual void previewUrl( const QUrl &url ) = 0;

};

qt'QFilePreview::QFilePreview() (./qt-2.1.0/src/dialogs/qfiledialog.cpp:5249)

QFilePreview::QFilePreview()
{
}

/*!
  \fn void QFilePreview::previewUrl( const QUrl &url )

  This method is called by QFileDialog if a preview
  for the \a url should be shown. Reimplement this
  method to do file/URL previews.
*/