How to use RenderPageToSurface in PDF API in easy way but best performance?

Question

Hi , I'm c# programmer. I know c++ little bit.

My Application Structure that C#/XAML have to call C++ Pdf Renderer for fast render pdf page.

I'm developing an c++ pdf renderer. I will use RenderPageToSurface method it only have in C++. I would like to know "How to deveop it".

I try to developed, but i found problem. When my app call RenderPageToSurface it work, but call again (use in render when user zoom pdf page) it occur AccessViolationException. I can't catch this Exception in C# !!

Please help and sugest me how should i do.

Thanks.

Here is my c++ code

// Initialize hardware-dependent resources.
void PDFDocumentRenderer::CreateDeviceResources()
{
	UINT creationFlags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;

	const D3D_FEATURE_LEVEL featureLevels [] =
	{
		D3D_FEATURE_LEVEL_11_1,
		D3D_FEATURE_LEVEL_11_0,
		D3D_FEATURE_LEVEL_10_1,
		D3D_FEATURE_LEVEL_10_0,
		D3D_FEATURE_LEVEL_9_3,
		D3D_FEATURE_LEVEL_9_2,
		D3D_FEATURE_LEVEL_9_1,
	};

	ComPtr<ID3D11Device> d3dDevice;
	ComPtr<ID3D11DeviceContext> d3dContext;

	
	DX::ThrowIfFailed(
		D3D11CreateDevice(
		nullptr,                        
		D3D_DRIVER_TYPE_HARDWARE,
		0,
		creationFlags,                
		featureLevels,                 
		ARRAYSIZE(featureLevels),
		D3D11_SDK_VERSION,             
		&m_d3dDevice,                  
		&featureLevel,
		&d3dContext
		)
		);


	m_d3dDevice.As(&dxgiDevice);
	d2dFactory->CreateDevice(dxgiDevice.Get(), &d2dDevice);
	d2dDevice->CreateDeviceContext(
		D2D1_DEVICE_CONTEXT_OPTIONS_NONE,
		&d2dDeviceContext
		);
	d2dDeviceContext->SetUnitMode(D2D1_UNIT_MODE_PIXELS);
	d2dDeviceContext->SetTextAntialiasMode(D2D1_TEXT_ANTIALIAS_MODE_GRAYSCALE);
	HRESULT pdfCreateHR = PdfCreateRenderer(dxgiDevice.Get(), &m_PdfRenderer);
}

//Render Method
void PDFDocumentRenderer::RenderPage(PdfPage^ page, SurfaceImageSource^ surface, int width, int height)
{

	reinterpret_cast<IInspectable*>(surface)->QueryInterface(IID_PPV_ARGS(&m_sisNative));
	ComPtr<IDXGIDevice> local_dxgiDevice;
	dxgiDevice.Get()->QueryInterface(IID_PPV_ARGS(&local_dxgiDevice));
	m_sisNative->SetDevice(local_dxgiDevice.Get());
	POINT offset = { 0, 0 };
	RECT rectangle = { 0,
		0,
		static_cast<long>(width),
		static_cast<long>(height)
	};
	ComPtr<IDXGISurface> dxgiSurface;

	
	HRESULT beginDrawHR = m_sisNative->BeginDraw(rectangle, &dxgiSurface, &offset);

	PDF_RENDER_PARAMS params;
	params.DestinationHeight = height;
	params.DestinationWidth = width;
	params.BackgroundColor = DX::ConvertToColorF(Windows::UI::Colors::White);
	params.SourceRect.left = 0;
	params.SourceRect.top = 0;
	params.SourceRect.bottom =0;
	params.SourceRect.right = 0;
	HRESULT pdfRenderHR = m_PdfRenderer->RenderPageToSurface(reinterpret_cast<IUnknown*>(page), dxgiSurface.Get(), offset, &params);

	HRESULT endDrawHR = m_sisNative->EndDraw();
	
}

UPATE I'm debugging , I found this line is occur AccessViolationException

	HRESULT pdfRenderHR = m_PdfRenderer->RenderPageToSurface(reinterpret_cast<IUnknown*>(page), dxgiSurface.Get(), offset, &params);

And I track begindrawHR , I got value is 0x80070057

HRESULT beginDrawHR = m_sisNative->BeginDraw(rectangle, &dxgiSurface, &offset); // got 0x80070057

P.S. I try to adapt as http://code.msdn.microsoft.com/windowsapps/PDF-viewer-showcase-sample-39ced1e8 , but hard to understand for me.

Answer 1

I'm thinking that it might be a better idea to debug this in WinDBG so you can try to capture the exception easier.

---

Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 2

Ok , I will try WinDBG later.

I would like to know why HRESULT is not SUCCESSED.