//參數 圖片路徑，窗口句柄，圖片寬，高
HRESULT ShowPic(char *lpstrFile,HWND hWnd,int nScrWidth,int nScrHeight)
{
?HDC hDC_Temp=GetDC(hWnd);
?
?IPicture *pPic;
?IStream *pStm;
?
?BOOL bResult;
?
?HANDLE hFile=NULL;
?DWORD dwFileSize,dwByteRead;
?
?//打開硬盤中的圖形文件
?hFile=CreateFile(lpstrFile,GENERIC_READ,
??FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
?
?if (hFile!=INVALID_HANDLE_VALUE)
?{
??dwFileSize=GetFileSize(hFile,NULL);//獲取文件字節數
??
??if (dwFileSize==0xFFFFFFFF)
???return E_FAIL;
?}
?else
?{
??return E_FAIL;
?}
?
?
?//分配全局存儲空間
?HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, dwFileSize);
?LPVOID pvData = NULL;
?
?if (hGlobal == NULL)
??return E_FAIL;
?
?if ((pvData = GlobalLock(hGlobal)) == NULL)//鎖定分配內存塊
??return E_FAIL;
?
?ReadFile(hFile,pvData,dwFileSize,&dwByteRead,NULL);//把文件讀入內存緩沖區
?
?GlobalUnlock(hGlobal);
?
?CreateStreamOnHGlobal(hGlobal, TRUE, &pStm);
?
?//裝入圖形文件
?bResult=OleLoadPicture(pStm,dwFileSize,TRUE,IID_IPicture,(LPVOID*)&pPic);
?
?if(FAILED(bResult))
??return E_FAIL;
?
?OLE_XSIZE_HIMETRIC hmWidth;//圖片的真實寬度
?OLE_YSIZE_HIMETRIC hmHeight;//圖片的真實高度
?pPic->get_Width(&hmWidth);
?pPic->get_Height(&hmHeight);
?
?
?//將圖形輸出到屏幕上（有點像BitBlt）
?bResult=pPic->Render(hDC_Temp,0,0,nScrWidth,nScrHeight,
??0,hmHeight,hmWidth,-hmHeight,NULL);
?
?pPic->Release();
?
?CloseHandle(hFile);//關閉打開的文件
?
?if (SUCCEEDED(bResult))
?{
??return S_OK;
?}
?else
?{
??return E_FAIL;
?}
}