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!");
}
--
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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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