VC写图片，位图的创建与保存

void CreateFrontBmp(char *InPath, char * OutPath, CardInfoASC &cardinfo)
{
FILE *fp=fopen(InPath, "rb");
if(fp == NULL)
return ;

fseek(fp, sizeof(BITMAPFILEHEADER), 0);
BITMAPINFOHEADER head;
fread(&head, sizeof(BITMAPINFOHEADER), 1, fp);
int bmpHeight = head.biHeight;
int bmpWidth = head.biWidth;
int biBitCount = head.biBitCount;
int lineByte = (bmpWidth*biBitCount/8+3)/4*4;
RGBQUAD *pColorTable;
if(biBitCount == 8)
{
pColorTable = new RGBQUAD[256];
fread(pColorTable, sizeof(RGBQUAD), 256, fp);
}
unsigned char *pBmpBuf = new unsigned char[lineByte*bmpHeight];
fread(pBmpBuf, 1, lineByte*bmpHeight, fp);

CDC *m_pMemDC;
m_pMemDC = new CDC();
CDC *pDC;
pDC = CDC::FromHandle(GetDC(NULL));//AfxGetMainWnd()-> m_hWnd
m_pMemDC->CreateCompatibleDC(pDC);

CBitmap *m_pOldBmp = NULL;

CBitmap *m_pMemBmp = new CBitmap();       //根据图片的大小创建一个兼容位图
m_pMemBmp->CreateCompatibleBitmap(pDC, bmpWidth, bmpHeight);
m_pMemDC->SelectObject(m_pMemBmp);

// 把图像的数据绘制到兼容位图上

SetDIBits(m_pMemDC->GetSafeHdc(), (HBITMAP)m_pMemBmp->m_hObject, 
0, bmpHeight, (LPVOID)pBmpBuf, (BITMAPINFO*)&head, DIB_RGB_COLORS);
m_pMemDC->SetBkMode(TRANSPARENT);
m_pMemDC->SetTextColor(RGB(0, 0, 0));

CFont m_Font;  
//建立字体。  
m_Font.CreateFont(22, //字体的高度。  
15, //字体的宽度。  
0, //文本行的倾斜角度。  
0, //字符基线的倾斜角度。  
10, //字符的粗细。  
FALSE, //字体是否为斜体。  
FALSE, //字体是否带下划线。  
FALSE, //字体是否带删除线。  
ANSI_CHARSET, //字体的字符集。  
OUT_DEFAULT_PRECIS, //字符的输出精度。  
CLIP_DEFAULT_PRECIS, //字符裁剪精度。  
DEFAULT_QUALITY, //字体的输出质量。  
FF_SWISS, //字符间距（低两位），字体族（高四位）。  
_T("宋体 ")); //字体名称。  
CFont* oldFont=m_pMemDC->SelectObject(&m_Font);