cwindow_xscroll = file->tag.get_property("CWINDOW_XSCROLL", cwindow_xscroll);
cwindow_yscroll = file->tag.get_property("CWINDOW_YSCROLL", cwindow_yscroll);
cwindow_zoom = file->tag.get_property("CWINDOW_ZOOM", cwindow_zoom);
cwindow_xscroll = file->tag.get_property("CWINDOW_XSCROLL", cwindow_xscroll);
cwindow_yscroll = file->tag.get_property("CWINDOW_YSCROLL", cwindow_yscroll);
cwindow_zoom = file->tag.get_property("CWINDOW_ZOOM", cwindow_zoom);