對屏幕截屏,保存爲BMP格式文件的實現方法(VC2003)

ScreenManage Class defines // Get the screen's content and save to BMP file VOID ScreenManage::GetScreen(CString strOutputFileName) { CDC *pDC; // Screen's DC pDC = CDC::FromHandle(GetDC(NULL)); int BitPerPixel = pDC->GetDeviceCaps(BITSPIXEL); // Get the color mode int Width = pDC->GetDeviceCaps(HORZRES); int Height = pDC->GetDeviceCaps(VERTRES); CDC memDC; // Memory DC memDC.CreateCompatibleDC(pDC); CBitmap memBitmap, *oldmemBitmap; // Create one bitmap for the screen memBitmap.CreateCompatibleBitmap(pDC, Width, Height); oldmemBitmap = memDC.SelectObject(&memBitmap); // Save to memory memDC.BitBlt(0, 0, Width, Height, pDC, 0, 0, SRCCOPY); // Copy the screen to memory // Saving memDC to BMP file process BITMAP bmp; memBitmap.GetBitmap(&bmp); // Get the bitMap's information FILE *fp = fopen(strOutputFileName, "w+b"); BITMAPINFOHEADER bih = {0}; // bitMap's header bih.biBitCount = bmp.bmBitsPixel; // the bitMap pixel's size //bih.biBitCount = 32; // the bitMap pixel's size //bih.biBitCount = 24; // the bitMap pixel's size bih.biCompression = BI_RGB; bih.biHeight = bmp.bmHeight; // set Height bih.biPlanes = 1; bih.biSize = sizeof(BITMAPINFOHEADER); bih.biSizeImage = bmp.bmWidthBytes * bmp.bmHeight; // set the bitMap's size bih.biWidth = bmp.bmWidth; // set Width BITMAPFILEHEADER bfh = {0}; // bitMap file's header bfh.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); // bfh.bfSize = bfh.bfOffBits + bmp.bmWidthBytes * bmp.bmHeight; // bitMap file's size bfh.bfType = (WORD)0x4D42; fwrite(&bfh, 1, sizeof(BITMAPFILEHEADER), fp); // write the bitMap file header fwrite(&bih, 1, sizeof(BITMAPINFOHEADER), fp); // write the bitMap header byte * p = new byte[bmp.bmWidthBytes * bmp.bmHeight]; // GetDIBits(memDC.m_hDC, (HBITMAP) memBitmap.m_hObject, 0, Height, p, (LPBITMAPINFO) &bih, DIB_RGB_COLORS); // fwrite(p, 1, bmp.bmWidthBytes * bmp.bmHeight, fp);// delete [] p; fclose(fp); memDC.SelectObject(oldmemBitmap); return VOID(); } // Get screen's map by some parameters VOID ScreenManage::GetScreen(CString strOutputFileName, int nPuaseTimer, int nTotalMapCount) { int nCount = 0; CString strNewFileName; CStringArray arrFileNameData; TypeConver typeConver; typeConver.SplitString(strOutputFileName,'.',arrFileNameData); while(nCount < nTotalMapCount) { CString strCount; typeConver.IntToCString(nCount, strCount); strNewFileName = arrFileNameData.GetAt(0) + strCount + "." + arrFileNameData.GetAt(1); this->GetScreen(strNewFileName); Sleep(nPuaseTimer); // Puase process nCount++; } } TypeConver Class defines // VOID TypeConver::SplitString(CString & strInputData, TCHAR cSplitChar, CStringArray & arrOutputData) { TCHAR * p = strInputData.GetBuffer(0); TCHAR * e = p; TCHAR cEnd = * e; int nCount = 0; while(cEnd) { if(*e == _T('/0')) cEnd = * e; else if(*e == cSplitChar) *e = _T('/0'); if(*e) e++; else { if(*p != _T('/0')) { arrOutputData.Add(p); nCount++; } p = ++e; } } return VOID(); } // VOID TypeConver::IntToCString(int nInputData, CString & strOutputData) { strOutputData.Format("%08d",nInputData); return VOID(); } // int TypeConver::CStringToInt(CString strInputData) { return atoi(strInputData); }