C / C++ / MFC

class cPictureList
{
	public:
		class cPictureListElement
		{
			public:
				IPicture *pPicture;

				long hmWidth;
				long hmHeight;

				cPictureListElement()
				{
					pPicture = NULL;

					hmWidth  = 0;
					hmHeight = 0;
				}

			private:
				cPictureListElement *pNextPicture;

			friend class cPictureList;
		};

	public:
		cPictureListElement *pFirstPicture;

		cPictureList()
		{
			pFirstPicture = NULL;
		}

		void Enter           (char*);
		void LoadCovers      (long);
		void LoadGalleryPic  (char*, LPPICTURE);
		void DisplayPictures (HWND, HDC, RECT);
};

void cPictureList::Enter(char *szFileName)
{
	// Function to add gallery pics to the linked list

	if ( pFirstPicture == NULL )
	{
		cPictureListElement *pNewPicture;
		
		pNewPicture = new cPictureListElement;
		
		LoadGalleryPic(szFileName, pNewPicture->pPicture);

		pFirstPicture = pNewPicture;
		pNewPicture->pNextPicture = NULL;

		return;
	}

	// Add to the tail of the list
	cPictureListElement *pBeforePicture, *pAfterPicture;

	pBeforePicture = pFirstPicture;
	pAfterPicture  = pFirstPicture;

	while ( pAfterPicture != NULL )
	{
		pBeforePicture = pAfterPicture;
		pAfterPicture  = pAfterPicture->pNextPicture;
	}

	cPictureListElement *pNewPicture;

	pNewPicture = new cPictureListElement;

	LoadGalleryPic(szFileName, pNewPicture->pPicture);

	pBeforePicture->pNextPicture = pNewPicture;
	pNewPicture->pNextPicture    = NULL;

}

void cPictureList::LoadGalleryPic(char *szFile, IPicture *gpPic)
{
	// This function loads a file into an IStream.

	// open file
	HANDLE hFile = CreateFile(szFile, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);

	// get file size
	DWORD dwFileSize = GetFileSize(hFile, NULL);

	LPVOID pvData = NULL;

	// alloc memory based on file size
	HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, dwFileSize);

	pvData = GlobalLock(hGlobal);

	DWORD dwBytesRead = 0;

	// read file and store in global memory
	BOOL bRead = ReadFile(hFile, pvData, dwFileSize, &dwBytesRead, NULL);

	GlobalUnlock(hGlobal);
	CloseHandle(hFile);

	if ( bRead == FALSE )
		return;

	LPSTREAM pstm = NULL;

	// create IStream* from global memory
	HRESULT hr = CreateStreamOnHGlobal(hGlobal, TRUE, &pstm);

	hr = ::OleLoadPicture(pstm, dwFileSize, FALSE, IID_IPicture, (LPVOID *) &gpPic);

	pstm->Release();
}

void cPictureList::DisplayPictures(HWND hwnd, HDC hdc, RECT rc)
{
	// Function to "paint" the pictures into the gallery

	cPictureListElement *pDisplay;

	pDisplay = pFirstPicture;

	while ( pDisplay != NULL )
	{
		long hmHeight;
		long hmWidth;

		if ( pDisplay->pPicture != NULL )
		{
			pDisplay->pPicture->get_Width(&hmWidth);
			pDisplay->pPicture->get_Height(&hmHeight);
		}
		else
			MessageBox(NULL, "Picture is NULL", NULL, MB_OK);

		pDisplay = pDisplay->pNextPicture;
	}
}

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movw (%eax,edx),%ax