请问如何将内存CDC中画的位图保存为bmp文件？

Question

新手，最好有代码以供学习，谢谢大家！！

Answer 1

BOOL SaveBmp(HBITMAP hBitmap, CString FileName)
{
HDC hDC;   
    int iBits;   
    WORD wBitCount;   
    DWORD dwPaletteSize=0,dwBmBitsSize=0,dwDIBSize=0,dwWritten=0;     
    BITMAP Bitmap;       
    BITMAPFILEHEADER bmfHdr;       
    BITMAPINFOHEADER bi;       
    LPBITMAPINFOHEADER lpbi;       
    HANDLE fh,hDib,hPal,hOldPal=NULL;     
    hDC = CreateDC("DISPLAY",NULL,NULL,NULL);   
    iBits = GetDeviceCaps(hDC,BITSPIXEL)*GetDeviceCaps(hDC,PLANES);     
    DeleteDC(hDC);     
    if(iBits<=1) 
wBitCount = 1;     
    else if(iBits<=4)   
wBitCount =4;     
    else if(iBits<=8)   
wBitCount = 8;     
    else   
wBitCount = 24;     
    GetObject(hBitmap, sizeof(Bitmap),(LPSTR)&Bitmap);   
    bi.biSize = sizeof(BITMAPINFOHEADER);   
    bi.biWidth = Bitmap.bmWidth;   
    bi.biHeight = Bitmap.bmHeight;   
    bi.biPlanes = 1;   
    bi.biBitCount = wBitCount;   
    bi.biCompression = BI_RGB;   
    bi.biSizeImage = 0;   
    bi.biXPelsPerMeter = 0;   
    bi.biYPelsPerMeter = 0;   
    bi.biClrImportant = 0;   
    bi.biClrUsed = 0;   
    dwBmBitsSize = ((Bitmap.bmWidth*wBitCount+31)/32)*4*Bitmap.bmHeight;   
    hDib = GlobalAlloc(GHND,dwBmBitsSize+dwPaletteSize+sizeof(BITMAPINFOHEADER));     
    lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);     
    *lpbi = bi;     
    hPal=GetStockObject(DEFAULT_PALETTE);     
    if(hPal)     
    {     
hDC = ::GetDC(NULL);     
hOldPal = ::SelectPalette(hDC,(HPALETTE)hPal,FALSE);     
RealizePalette(hDC);     
    }   
    
    GetDIBits(hDC,hBitmap,0,(UINT)Bitmap.bmHeight,(LPSTR)lpbi+sizeof(BITMAPINFOHEADER)+dwPaletteSize,(BITMAPINFO *)lpbi,DIB_RGB_COLORS);     
    if(hOldPal)     
    {     
::SelectPalette(hDC,(HPALETTE)hOldPal,TRUE);     
RealizePalette(hDC);     
::ReleaseDC(NULL,hDC);     
    
}     
    fh = CreateFile(FileName,GENERIC_WRITE,0, NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL|FILE_FLAG_SEQUENTIAL_SCAN,NULL);     
    if(fh == INVALID_HANDLE_VALUE)    
return   FALSE;     
    bmfHdr.bfType = 0x4D42;   //   "BM"     
    dwDIBSize = sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+dwPaletteSize+dwBmBitsSize;       
    bmfHdr.bfSize=dwDIBSize;     
    bmfHdr.bfReserved1=0;     
bmfHdr.bfReserved2=0;     
    bmfHdr.bfOffBits=(DWORD)sizeof(BITMAPFILEHEADER)+(DWORD)sizeof(BITMAPINFOHEADER)+dwPaletteSize;     
    WriteFile(fh,(LPSTR)&bmfHdr,sizeof(BITMAPFILEHEADER),&dwWritten,NULL);     
WriteFile(fh,(LPSTR)lpbi,dwDIBSize,&dwWritten,NULL);
GlobalUnlock(hDib);     
GlobalFree(hDib);     
    CloseHandle(fh);     
    return TRUE;   
}

Answer 2

CDC::GetCurrentBitmap()->SetBitmapBits( , void *ImgBuf);