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GeneralRe: How to render multiple 3D objects separately? Pin Pin
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QuestionD2D/GDI+ Interop Problem Pin
Member 1171275327-Feb-16 19:21
Member 1171275327-Feb-16 19:21 
I have recently read an article about Direct2D and GDI Interop from MSDN and I just wanted to make an attempt on that.

The problem with my code is that there is no (D2D) red rectangles at the output file but it does not produce any compile-time or runtime errors.

That really makes me frustrated as I have already spent my valuable weekend for that without any progress. Cry | :((

Any help is appreciated.Rose | [Rose]

Ref. article: Direct2D and GDI Interoperability Overview (Windows)[^]

Code block:
C++
#include<d2d1_2.h>
#include<gdiplus.h>
#include<iostream>
#include<wincodec.h>

#pragma comment(lib, "d2d1.lib")
#pragma comment(lib, "GdiPlus.lib")
#pragma comment(lib, "Windowscodecs.lib")

using namespace std;

void main()
{
	HRESULT hr;
	ID2D1Factory* factory;
	ID2D1DCRenderTarget* target;
	ID2D1SolidColorBrush* brush;

	D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &factory);

	// initialize GDI+
	ULONG_PTR token;
	Gdiplus::GdiplusStartup(&token, new Gdiplus::GdiplusStartupInput(), nullptr);


	auto image = new Gdiplus::Image(L"C:\\temp\\test.jpg");

	auto g = Gdiplus::Graphics::FromImage(image);

	auto prop = D2D1_RENDER_TARGET_PROPERTIES{
		D2D1_RENDER_TARGET_TYPE_HARDWARE ,
		D2D1_PIXEL_FORMAT{ DXGI_FORMAT_B8G8R8A8_UNORM , D2D1_ALPHA_MODE_PREMULTIPLIED },
		144.0f,
		144.0f,
		D2D1_RENDER_TARGET_USAGE_GDI_COMPATIBLE,
		D2D1_FEATURE_LEVEL_DEFAULT
	};


	hr = factory->CreateDCRenderTarget(&prop, &target);

	auto rect = RECT{ 0L,0L,800L, 600L };

	cout << boolalpha << (image == nullptr) << boolalpha << (g == nullptr) << endl;

	HDC deviceContext = g->GetHDC();

	// binds D2D device context to GDI+ device context.
	target->BindDC(deviceContext, &rect);

	// DrawRectangle using D2d
	target->BeginDraw();

	target->CreateSolidColorBrush(D2D1::ColorF(D2D1::ColorF::Red, 1.0f), &brush);
	target->DrawRectangle(D2D1_RECT_F{ 5.0f,5.0f,10.0f,10.0f }, brush);
	target->DrawRectangle(D2D1_RECT_F{ 10.0f,10.0f,30.0f,30.0f }, brush);

	hr = target->EndDraw();

	cout << boolalpha << SUCCEEDED(hr) << endl;

	CLSID pngEncoderClsId = { 0x557cf406, 0x1a04, 0x11d3,{ 0x9a,0x73,0x00,0x00,0xf8,0x1e,0xf3,0x2e } };

	// Transcode and save as PNG image file
	image->Save(L"C:\\temp\\output.png", &pngEncoderClsId);

	Gdiplus::GdiplusShutdown(token);
}

AnswerRe: D2D/GDI+ Interop Problem Pin
Richard MacCutchan27-Feb-16 21:11
mveRichard MacCutchan27-Feb-16 21:11 
QuestionDirect3d Game programming error Pin
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QuestionHow to paint right angle connecting line looks like as visio Pin
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