如何编程实现bmp到二进制的转换？

[zyjvcitor]

我现在对一个问题十分苦恼，怎样把一幅bmp图象转换为由二进制组成的距阵

请各位高手指点！

[icr_mio]

bmp图象本来就是二进制组成的距阵

不过开头有一部分是图象描述信息

[bluebohe]

::GetDIBits 函数，看一下MSDN

[bluebohe]

读写BMP

CBitmap bitmap;
HANDLE h=::LoadImage(0,"f:\\tzg.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
bitmap.Attach(h);
CFile file("F:\\tzg1.bmp",CFile::modeCreate|CFile::modeWrite);
CArchive ar(&file,CArchive::store);

BITMAP size;
bitmap.GetBitmap(&size);
int iHeight=size.bmHeight;
int iWidth=size.bmWidth;
int WIDTHBYTES;
unsigned char * pBitBuf=NULL;

WIDTHBYTES=(iWidth*3+3)/4*4;
pBitBuf=(unsigned char *)malloc(WIDTHBYTES*iHeight);



BITMAPFILEHEADER BitFileHead;
BITMAPINFOHEADER BitInfoHead;


BitInfoHead.biHeight=iHeight;
BitInfoHead.biWidth=iWidth;
BitInfoHead.biSizeImage=WIDTHBYTES*iHeight;
BitInfoHead.biSize = sizeof(BITMAPINFOHEADER);
BitInfoHead.biPlanes = 1;
BitInfoHead.biBitCount = 24;
BitInfoHead.biCompression = BI_RGB;
BitInfoHead.biXPelsPerMeter = 2952; // 75 DPI
BitInfoHead.biYPelsPerMeter = 2952; // 75 DPI
BitInfoHead.biClrUsed = 0;
BitInfoHead.biClrImportant = 0;

BitFileHead.bfType = 'MB'; // Non-portable... sigh
BitFileHead.bfSize = BitInfoHead.biSizeImage+sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);
BitFileHead.bfReserved1 = 0;
BitFileHead.bfReserved2 = 0;
BitFileHead.bfOffBits =sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);

BITMAPINFO mapinfo;
mapinfo.bmiHeader=BitInfoHead;
// mapinfo.bmiColors

HDC hdc = CreateIC (TEXT("DISPLAY"), NULL, NULL, NULL) ;
::GetDIBits (hdc, (HBITMAP)h,0, iHeight, pBitBuf, &mapinfo, DIB_RGB_COLORS) ;


file.Write(&BitFileHead,sizeof(BITMAPFILEHEADER));
file.Write(&BitInfoHead,sizeof(BITMAPINFOHEADER));
file.Write(pBitBuf,WIDTHBYTES*iHeight);

free(pBitBuf);



ar.Close();
file.Close();
bitmap.DeleteObject();