MS products can always use mswebp.dll as they wish, as it is WIC dll component.
Simple code to test WIC with file
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <ole2.h>
#include <wincodec.h>
#include <stdio.h>
#include <wchar.h>
#pragma comment(lib, "ole32")
//#pragma comment(lib, "windowscodecs.lib")
const GUID CLSID_WICImagingFactory = {0xcacaf262,0x9370,0x4615,{0xa1,0x3b,0x9f,0x55,0x39,0xda,0x4c,0xa}};
//const GUID CLSID_WICImagingFactory1 = {0xcacaf262,0x9370,0x4615,{0xa1,0x3b,0x9f,0x55,0x39,0xda,0x4c,0xa}};
//const GUID CLSID_WICImagingFactory2 = {0x317d06e8,0x5f24,0x433d,0xbd,0xf7,0x79,0xce,0x68,0xd8,0xab,0xc2};
const IID IID_IWICImagingFactory = {0xEC5EC8A9,0xC395,0x4314,{0x9C,0x77,0x54,0xD7,0xA9,0x35,0xFF,0x70}};
int __cdecl wmain(int argc, wchar_t **argv)
{
HRESULT hr;
IWICImagingFactory *pIWICFactory = 0;
IWICBitmapDecoder *pDecoder = 0;
IWICBitmapFrameDecode *pFrame = 0;
OleInitialize(NULL);
hr = CoCreateInstance(&CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, &IID_IWICImagingFactory, (void **)(&pIWICFactory));
if (pIWICFactory) {
hr = pIWICFactory->lpVtbl->CreateDecoderFromFilename(pIWICFactory, argv[1], NULL, GENERIC_READ, WICDecodeMetadataCacheOnDemand, &pDecoder );
if (pDecoder) {
puts("pDecoder created");
pDecoder->lpVtbl->GetFrame(pDecoder, 0, &pFrame );
if (pFrame) {
puts("pFrame created");
WICPixelFormatGUID pixelFormatGUID;
WCHAR wszBuffer[256];
pFrame->lpVtbl->GetPixelFormat(pFrame, &pixelFormatGUID );
StringFromGUID2(&pixelFormatGUID, wszBuffer, 255);
wprintf(wszBuffer);
UINT nWidth = 0;
UINT nHeight = 0;
pFrame->lpVtbl->GetSize(pFrame, &nWidth, &nHeight );
wprintf(L"\n%u %u\n", nWidth, nHeight);
}
pDecoder->lpVtbl->Release(pDecoder);
}
pIWICFactory->lpVtbl->Release(pIWICFactory);
}
OleUninitialize();
return 0;
}
