怎么把数据表示的位图文件在VC中显示为图片??可以加分! 大家看清楚了,我的情况是这样的,别人把一个位图文件用数据流的形式传给我,我接到的就是一串数据,现在我要把它显示出来,怎么做?具体用什么函数啊,??我新学的,就知道两个函数LoadBitmap(), LoadImage(),这里看样子都用不上了,大家指点一下啊! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 看看BMP文件的格式,活着那用MFC的CDC,好像有能直接显示BITMAP数据流的,我也记不太清了。你查一下MSDN DIB的显示呀。用SetDIBsToDevice。 一行就可以了。自己看msdn吧。 仔细看一定对有用void Cmfc对话框Dlg::OnBnClickedButton3() { CImage mmage; HWND hWnd = ::GetDesktopWindow();//获得屏幕的HWND. HDC hScreenDC = ::GetDC(hWnd); //获得屏幕的HDC. HDC MemDC = ::CreateCompatibleDC(hScreenDC); RECT rect; ::GetWindowRect(hWnd,&rect); HBITMAP hBitmap = ::CreateCompatibleBitmap(hScreenDC,rect.right,rect.bottom); HGDIOBJ hOldBMP = ::SelectObject(MemDC,hBitmap); ::BitBlt(MemDC,0,0,rect.right,rect.bottom,hScreenDC,rect.left,rect.top,SRCCOPY); hBitmap=(HBITMAP)::SelectObject(MemDC,hOldBMP); mmage.Attach(hBitmap); IStream* pStmImage = NULL; HGLOBAL hMemBmp = GlobalAlloc(GMEM_MOVEABLE,0);//可移动的缓冲区 if (hMemBmp == NULL) return; CreateStreamOnHGlobal(hMemBmp, FALSE, &pStmImage);//将内存区B作为流的起始 if (pStmImage == NULL) { GlobalFree(hMemBmp); MessageBox(L"为空"); return ; } mmage.Save(pStmImage,ImageFormatJPEG); BYTE* pbyBmp = (BYTE *)GlobalLock(hMemBmp);//得到缓冲区的起始地址 CFile mfile(L"234.jpg",CFile::modeCreate|CFile::modeWrite|CFile::typeBinary); GlobalUnlock(hMemBmp); mfile.Write(pbyBmp,GlobalSize(hMemBmp)); mfile.Close();pStmImage->Release();GlobalFree(hMemBmp);if(mmage)mmage.Destroy();::DeleteObject(MemDC);::ReleaseDC(hWnd,hScreenDC);} VC光盘错误 关于播放器控件 关于OpenGL:请问用auxSolidBox画长方体时能否确定它的位置 这是需求,回贴有分!!!! 关于unicode和utf8,utf16等 请教SendMessage问题 如何关闭一个打开的ActivX(windows media player)控件? VC Programmer database数据库的问题 Excel com加载项崩溃时,如何创建dmp文件 CFileDialog如何新建一指定格式的文件?菜鸟提问 udp,OICQ, 客户端如何判断重复消息??
void Cmfc对话框Dlg::OnBnClickedButton3()
{
CImage mmage;
HWND hWnd = ::GetDesktopWindow();//获得屏幕的HWND.
HDC hScreenDC = ::GetDC(hWnd); //获得屏幕的HDC.
HDC MemDC = ::CreateCompatibleDC(hScreenDC);
RECT rect;
::GetWindowRect(hWnd,&rect);
HBITMAP hBitmap = ::CreateCompatibleBitmap(hScreenDC,rect.right,rect.bottom);
HGDIOBJ hOldBMP = ::SelectObject(MemDC,hBitmap);
::BitBlt(MemDC,0,0,rect.right,rect.bottom,hScreenDC,rect.left,rect.top,SRCCOPY);
hBitmap=(HBITMAP)::SelectObject(MemDC,hOldBMP);
mmage.Attach(hBitmap);
IStream* pStmImage = NULL;
HGLOBAL hMemBmp = GlobalAlloc(GMEM_MOVEABLE,0);//可移动的缓冲区
if (hMemBmp == NULL) return;
CreateStreamOnHGlobal(hMemBmp, FALSE, &pStmImage);//将内存区B作为流的起始
if (pStmImage == NULL) {
GlobalFree(hMemBmp);
MessageBox(L"为空");
return ;
}
mmage.Save(pStmImage,ImageFormatJPEG); BYTE* pbyBmp = (BYTE *)GlobalLock(hMemBmp);//得到缓冲区的起始地址
CFile mfile(L"234.jpg",CFile::modeCreate|CFile::modeWrite|CFile::typeBinary);
GlobalUnlock(hMemBmp);
mfile.Write(pbyBmp,GlobalSize(hMemBmp));
mfile.Close();
pStmImage->Release();
GlobalFree(hMemBmp);
if(mmage)
mmage.Destroy();
::DeleteObject(MemDC);
::ReleaseDC(hWnd,hScreenDC);}