C++ 加載PNG資源圖片

C++ 加載PNG資源圖片：

1. void LoadResImage(int nResID,Image * &lpImage)
2. {
3. HMODULE hModule=AfxGetInstanceHandle();
4. HRSRC hRsrc = ::FindResource (hModule,MAKEINTRESOURCE(nResID),_T("PNG")); // type
5. if (!hRsrc)
6. return;
7. // load resource into memory
8. DWORD len = SizeofResource(hModule, hRsrc);
9. BYTE* lpRsrc = (BYTE*)LoadResource(hModule, hRsrc);
10. if (!lpRsrc)
11. return;
12. // Allocate global memory on which to create stream
13. HGLOBAL m_hMem = GlobalAlloc(GMEM_FIXED, len);
14. BYTE* pmem = (BYTE*)GlobalLock(m_hMem);
15. memcpy(pmem,lpRsrc,len);
16. IStream* pstm;
17. CreateStreamOnHGlobal(m_hMem,FALSE,&pstm);
18. // load from stream
19. lpImage=Gdiplus::Image::FromStream(pstm);
20. // free/release stuff
21. GlobalUnlock(m_hMem);
22. pstm->Release();
23. FreeResource(lpRsrc);
24. }