发信人: black()
整理人: wenbobo(2002-12-27 15:53:04), 站内信件
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以下文章来自水木清华
发信人: telnet (小飞象), 信区: VisualC 标 题: 不要怀疑了,JDK是对的 发信站: BBS 水木清华站 (Sun Oct 3 14:07:23 1999)
中午吃饭时试了一下,成功了。 我看了MSDN也以为只对BMP有用,结果是对JPG GIF都可以。 向不轻信MS的JDK致敬! //admire JDK 以下是实验代码,大家可以在95下试试,我在98+IE5上成功。 是一个CView的例子,别忘了AfxOleInit 另,时间短,写得很乱,,大家自行改进吧!
void CPICView::OnDraw(CDC* pDC) { CPICDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc);
IPicture *pPic; IStream *pStm;
CFileStatus fstatus; CFile file; LONG cb;
if (file.Open("c:/test.jpg",CFile::modeRead)&&file.GetStatus("c:/test.jpg", fstatus)&& ((cb = fstatus.m_size) != -1)) { HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, cb); LPVOID pvData = NULL; if (hGlobal != NULL) { if ((pvData = GlobalLock(hGlobal)) != NULL) { file.ReadHuge(pvData, cb); GlobalUnlock(hGlobal); CreateStreamOnHGlobal(hGlobal, TRUE, &pStm);
if(SUCCEEDED(OleLoadPicture(pStm,fstatus.m_size,TRUE,IID_IPicture,(LPVOID* )&pPic))) { OLE_XSIZE_HIMETRIC hmWidth; OLE_YSIZE_HIMETRIC hmHeight;
pPic->get_Width(&hmWidth); pPic->get_Height(&hmHeight); double fX,fY; fX = (double)pDC->GetDeviceCaps(HORZRES)*(double)hmWidth/((double)pDC->Ge tDeviceCaps(HORZSIZE)*100.0); fY = (double)pDC->GetDeviceCaps(VERTRES)*(double)hmHeight/((double)pDC->G etDeviceCaps(VERTSIZE)*100.0); if(FAILED(pPic->Render(*pDC,0,0,(DWORD)fX,(DWORD)fY,0,hmHeight,hmWidth,-h mHeight,NULL))) AfxMessageBox("Failed To Render The picture!"); pPic->Release(); } else AfxMessageBox("Error Loading Picture From Stream!"); } } } else AfxMessageBox("Can't Open Image File!"); }
-- ------------------------------------------------------------------------------- 孤客一身千里外,未知归日是何年 Email : [email protected]
※ 来源:.网易 BBS bbs.netease.com.[FROM: 202.96.138.54]
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