位图剪切

/*   函数功能：剪切bmp图片*/void CCutBmpDlg::CutBmpTwo(CString soucepath,CString cutpath1,CString cutpath2){   if (GetFileAttributes(soucepath) == -1)   {   return;   }   HBITMAP  SouceBitmap = ::SHLoadDIBitmap(soucepath);   BITMAP   SouceSize;   if (SouceBitmap)   {   ::GetObject(SouceBitmap,sizeof(SouceSize),&SouceSize);   }   int BitmapWidth = SouceSize.bmWidth;   int BitmapHeigth = SouceSize.bmHeight;LPBITMAPINFO info = new BITMAPINFO;   memset(&info->bmiHeader,0,sizeof(BITMAPINFOHEADER));   info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);   info->bmiHeader.biWidth = BitmapWidth/2;   info->bmiHeader.biHeight = BitmapHeigth;   info->bmiHeader.biPlanes = 1;   info->bmiHeader.biBitCount = 16; //16位   info->bmiHeader.biCompression = BI_RGB;   info->bmiHeader.biSizeImage = 0;   info->bmiHeader.biXPelsPerMeter = 0;   info->bmiHeader.biYPelsPerMeter = 0;   info->bmiHeader.biClrUsed = 0;   info->bmiHeader.biClrImportant = 0;   HDC hdc = ::GetDC(GetSafeHwnd());   HBITMAP Membitmap1 = NULL;   HDC  MemDC1 = CreateCompatibleDC(hdc);   BYTE *byte1;   HBITMAP Membitmap2 = NULL;   HDC  MemDC2 = CreateCompatibleDC(hdc);   BYTE *byte2;   Membitmap1 = CreateDIBSection(MemDC1,info,DIB_RGB_COLORS,(void **)&byte1,NULL,0);   ::SelectObject(MemDC1,Membitmap1);   ::SetBkMode(MemDC1,TRANSPARENT);    Membitmap2 = CreateDIBSection(MemDC2,info,DIB_RGB_COLORS,(void **)&byte2,NULL,0);   ::SelectObject(MemDC2,Membitmap2);   ::SetBkMode(MemDC2,TRANSPARENT); //  HBITMAP Bitmap = CreateCompatibleBitmap(hdc,BitmapWidth/2,BitmapHeigth);   HDC BitmapDC = CreateCompatibleDC(hdc);   ::SelectObject(BitmapDC,SouceBitmap);   ::BitBlt(MemDC1,0,0,BitmapWidth/2,BitmapHeigth,BitmapDC,0,0,SRCCOPY);   ::BitBlt(MemDC2,0,0,BitmapWidth/2,BitmapHeigth,BitmapDC,BitmapWidth/2,0,SRCCOPY);    //保存到文件并创建位图结构 BITMAPFILEHEADER bmfh1;  BITMAPFILEHEADER bmfh2; ZeroMemory(&bmfh1,sizeof(BITMAPFILEHEADER)); ZeroMemory(&bmfh2,sizeof(BITMAPFILEHEADER)); *((char *)&bmfh1.bfType) = 'B'; *(((char *)&bmfh1.bfType) + 1) = 'M';  *((char *)&bmfh2.bfType) = 'B'; *(((char *)&bmfh2.bfType) + 1) = 'M'; bmfh1.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); bmfh1.bfSize = bmfh1.bfOffBits + (BitmapWidth/2 * BitmapHeigth); bmfh2.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); bmfh2.bfSize = bmfh2.bfOffBits + (BitmapWidth/2 * BitmapHeigth); WCHAR szBMPFileName1[128]; WCHAR szBMPFileName2[128]; int iBMPBytes1 = BitmapWidth/2 * BitmapHeigth * 16 / 8; int iBMPBytes2 = BitmapWidth/2 * BitmapHeigth * 16 / 8; wcscpy(szBMPFileName1,cutpath1); wcscpy(szBMPFileName2,cutpath2);  CFile file1; if(file1.Open(szBMPFileName1,CFile::modeWrite | CFile::modeCreate)) {  file1.Write(&bmfh1,sizeof(BITMAPFILEHEADER));     file1.Write(&(info->bmiHeader),sizeof(BITMAPINFOHEADER));    file1.Write(byte1,iBMPBytes1);     file1.Close(); } CFile file2; if(file2.Open(szBMPFileName2,CFile::modeWrite | CFile::modeCreate)) {  file2.Write(&bmfh2,sizeof(BITMAPFILEHEADER));  file2.Write(&(info->bmiHeader),sizeof(BITMAPINFOHEADER));  file2.Write(byte2,iBMPBytes2);  file2.Close(); } ::DeleteDC(MemDC1);::DeleteDC(MemDC2);::DeleteDC(BitmapDC);::DeleteObject(Membitmap1);::DeleteObject(Membitmap2);::DeleteObject(SouceBitmap);delete []byte1;byte1 = NULL;delete []byte1;byte1 = NULL;}

      昨天客户要求开机的时候把他们SD卡里的制定图片切成两张大小一样的图片。我晕，干嘛他们自己不做成两张图片呢。