how to set image of Picture Control?

Question

I use direct2d create ID2D1Bitmap how to set this bitmap as Picture Controls's Source?

Answer 1

It is not common to use a ID2D1Bitmap in a control, which are mainly used to be drawn

Otherwise, you can convert it to HBITMAP

A way with WIC and GDI+ (quick test, to be improved as I don't do this...) :

(tested on Windows 10 22H2)

HRESULT ConvertD2DBitmapToHBITMAP(ID2D1Bitmap* pD2DBitmap, ID2D1DeviceContext* pD2D1DeviceContext, HBITMAP* phBitmap)
{
	*phBitmap = nullptr;
	IWICImagingFactory2* pWICImagingFactory2;
	HRESULT hr = CoCreateInstance(CLSID_WICImagingFactory2, nullptr, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pWICImagingFactory2));
	if (SUCCEEDED(hr))
	{
		IWICBitmapEncoder* pEncoder;
		hr = pWICImagingFactory2->CreateEncoder(GUID_ContainerFormatJpeg, nullptr, &pEncoder);
		if (SUCCEEDED(hr))
		{
			IStream* pStream;
			hr = CreateStreamOnHGlobal(nullptr, TRUE, &pStream);
			hr = pEncoder->Initialize(pStream, WICBitmapEncoderNoCache);
			if (SUCCEEDED(hr))
			{
				IWICBitmapFrameEncode* pFrameEncoder;
				hr = pEncoder->CreateNewFrame(&pFrameEncoder, nullptr);
				if (SUCCEEDED(hr))
				{
					hr = pFrameEncoder->Initialize(nullptr);
					ID2D1Device* pD2D1Device;
					pD2D1DeviceContext->GetDevice(&pD2D1Device);
					IWICImageEncoder* pImageEncoder;
					hr = pWICImagingFactory2->CreateImageEncoder(pD2D1Device, &pImageEncoder);
					if (SUCCEEDED(hr))
					{
						hr = pImageEncoder->WriteFrame(pD2DBitmap, pFrameEncoder, nullptr);
						hr = pFrameEncoder->Commit();
						hr = pEncoder->Commit();

						STATSTG stat;
						hr = pStream->Stat(&stat, STATFLAG_NONAME);
						if (SUCCEEDED(hr))
						{
							ULARGE_INTEGER liSize = stat.cbSize;
							auto pBytes = new BYTE[liSize.QuadPart];
							ULONG nBytesRead;
							LARGE_INTEGER liZero = {};
							hr = pStream->Seek(liZero, STREAM_SEEK_SET, nullptr);
							hr = pStream->Read(pBytes, liSize.LowPart, &nBytesRead);

							HBITMAP hBitmap = NULL;
							Gdiplus::Bitmap* pBitmap = new Gdiplus::Bitmap(pStream);
							if (pBitmap->GetLastStatus() == Gdiplus::Ok)
							{
								pBitmap->GetHBITMAP(Gdiplus::Color(255, 255, 255), &hBitmap);
								*phBitmap = hBitmap;
								delete pBitmap;
							}
						}
						pImageEncoder->Release();
					}
					pD2D1Device->Release();
					pFrameEncoder->Release();
				}
			}
			pStream->Release();
			pEncoder->Release();
		}
		pWICImagingFactory2->Release();
	}
	return hr;
}

At beginning :

#include "gdiplus.h"  
using namespace Gdiplus;
#pragma comment(lib, "gdiplus.lib")  

then to intialize GDI+ :

GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);