在bmp上添加字符2

void CTextOnbmpDlg::OnButton2()

{

// TODO: Add your control notification handler code here

FILE *fp=fopen("d:\\temp\\pic16001200\\000.bmp", "rb");

if(fp == 0)

       return ;

HDC hDC = ::GetDC(GetSafeHwnd());

     HDC hMemDC = CreateCompatibleDC(hDC);

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 = GetDC();

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_pOldBmp = 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(255, 0, 0));

   //设置字体

   CFont font;

font.CreateFont(10,10,0,0,10,FALSE,FALSE,FALSE,ANSI_CHARSET,OUT_DEFAULT_PRECIS,OUT_DEFAULT_PRECIS,DEFAULT_QUALITY,FF_SWISS,"宋体");

SelectObject(hMemDC, font);

// 添加文字到指定位置

   m_pMemDC->TextOut(100, 100, "hello");



   unsigned char *pTemp = new unsigned char[lineByte*bmpHeight];

GetDIBits(m_pMemDC->GetSafeHdc(), (HBITMAP)m_pMemBmp->m_hObject, 0, bmpHeight,

       (LPVOID)pTemp, (BITMAPINFO*)&head, DIB_RGB_COLORS);

fclose(fp);



   char bmpwrite[] = "test2.bmp";

fp = fopen(bmpwrite,"wb");

BITMAPFILEHEADER fileHead;

fileHead.bfType = 0x4D42;

fileHead.bfSize = sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+lineByte*bmpHeight;

fileHead.bfReserved1 = 0;

fileHead.bfReserved2 = 0;

fileHead.bfOffBits = 54;

fwrite(&fileHead, sizeof(BITMAPFILEHEADER), 1, fp);



   fwrite(&head, sizeof(BITMAPINFOHEADER), 1, fp);

fwrite(pTemp, lineByte*bmpHeight, 1, fp);

fclose(fp);



   delete m_pMemBmp;

delete m_pMemDC;

delete[] pBmpBuf;

delete[] pTemp;

MessageBox("VOER!");

}

巴特西

在bmp上添加字符2

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