DLL의 이미지 리소스를 로드하여 Skia의 SkBitmap 객체 생성

#include "utils.h"
#include "SkStream.h"
#include "SkImageDecoder.h"
#include <tchar.h>

SkBitmap* loadImageFromResource(UINT resId, LPCTSTR lpType)
{
    TCHAR szLog[512] = { 0 };
    HMODULE hModule = NULL;
    if (FALSE == GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
        , (LPCTSTR)loadImageFromResource, &hModule))
    {
        _stprintf_s(szLog, 512, _T("GetModuleHandleEx failed, error - %d\r
"), GetLastError());
        OutputDebugString(szLog);
        return NULL;
    }

    HRSRC hRsrc = FindResource(hModule, MAKEINTRESOURCE(resId), lpType);
    if (hRsrc == NULL)
    {
        _stprintf_s(szLog, 512, _T("FindResource failed, error - %d\r
"), GetLastError());
        OutputDebugString(szLog);
        return NULL;
    }

    HGLOBAL hImgData = LoadResource(hModule, hRsrc);
    if (hImgData == NULL)
    {
        _stprintf_s(szLog, 512, _T("LoadResource failed, error - %d\r
"), GetLastError());
        OutputDebugString(szLog);
        return NULL;
    }

    LPVOID lpData = LockResource(hImgData);
    if (lpData == NULL)
    {
        _stprintf_s(szLog, 512, _T("LockResource failed, error - %d\r
"), GetLastError());
        OutputDebugString(szLog);
        return NULL;
    }

    DWORD dwSize = SizeofResource(hModule, hRsrc);

    SkMemoryStream memoryStream(lpData, dwSize);
    SkImageDecoder *decoder = SkImageDecoder::Factory(&memoryStream);
    if (!decoder)
    {
        OutputDebugString(_T("SkImageDecoder::Factory failed\r
"));
        FreeResource(hImgData);
        return NULL;
    }

    SkBitmap *bitmap = new SkBitmap();
    if (SkImageDecoder::kSuccess == decoder->decode(&memoryStream,
        bitmap, kBGRA_8888_SkColorType,
        SkImageDecoder::kDecodePixels_Mode))
    {
        FreeResource(hImgData);
        return bitmap;
    }

    //error
    OutputDebugString(_T("SkImageDecoder::decode failed\r
"));
    FreeResource(hImgData);
    delete bitmap;
    return NULL;
}

SkBitmap *bitmap = loadImageFromResource(IDB_CLEAR, _T("PNG"));

IDB_CLEAR    PNG    "images\\icon-clear.png"