Aspose::Slides::IFontData::get_FontName() Throws NullReferenceException

Exper.cc

#include <cmath>
#include <memory>
#include <glog/logging.h>
#include <boost/filesystem.hpp>

#include <DOM/NullableBool.h>
#include <DOM/DocumentProperties.h>
#include <system/io/directory.h>
#include <Util/License.h>
#include <system/console.h>
#include <system/exception.h>
#include <Export/SaveFormat.h>
#include <DOM/Presentation.h>
#include <system/string.h>
#include <drawing/imaging/image_format.h>
#include <drawing/point.h>
#include <drawing/point_f.h>
#include <drawing/color.h>

#include <DOM/ISection.h>
#include <DOM/ISectionCollection.h>
#include <DOM/ISectionSlideCollection.h>
#include <DOM/ISlide.h>
#include <DOM/ISlideCollection.h>
#include <DOM/ILayoutSlide.h>
#include <DOM/IGlobalLayoutSlideCollection.h>
#include <DOM/ILayoutSlideCollection.h>
#include <DOM/IMasterLayoutSlideCollection.h>

#include <DOM/IMasterSlide.h>
#include <DOM/IMasterSlideCollection.h>
#include <DOM/IDocumentProperties.h>
#include <DOM/IProtectionManager.h>

#include <DOM/ITextStyle.h>
#include <DOM/ITextStyleEffectiveData.h>
#include <DOM/IParagraphFormat.h>
#include <DOM/IParagraphFormatEffectiveData.h>

#include <DOM/IBulletFormat.h>
#include <DOM/IBulletFormatEffectiveData.h>
#include <DOM/IFontData.h>
#include <DOM/IColorFormat.h>
#include <DOM/ISlidesPicture.h>
#include <DOM/IPPImage.h>
#include <DOM/IPortionFormat.h>

#include <DOM/IComment.h>
#include <DOM/ICommentAuthor.h>

#include <iostream>
#include <exception>

using namespace Aspose::Slides;
using SaveFormat = Aspose::Slides::Export::SaveFormat;


int main ()
{
	try {
		System::SharedPtr<Aspose::Slides::License> lic = System::MakeObject<Aspose::Slides::License>();
		lic->SetLicense(System::String("Aspose.Slides.C++.lic"));

		System::SharedPtr<Presentation> pres =  System::MakeObject<Presentation>();
		System::SharedPtr<IMasterSlideCollection> cols = pres->get_Masters();
		for (auto i=0; i< cols->get_Count(); ++i) {
			System::SharedPtr<IMasterSlide> s = cols->idx_get(i);
			System::SharedPtr<IFontData> ifont = s->get_TitleStyle()->get_DefaultParagraphFormat()->get_Bullet()->get_Font();
			std::cerr << "Got Font" << std::endl;
			System::String p1 = ifont->get_FontName();
		}

	}
	catch(std::exception& e) {
		std::cerr << "Error " << e.what() << std::endl;
	}
	catch(...) {
		std::cerr << "Unknown Error " << std::endl;
	}
}