如何把 CDC 画出来的 保存成bmp或者jpg文件 具体情况是这样的:Dialog 我自定义个CWnd,在里面画了几个矩形框和连接矩形框的直线,请问如何将画的这些保存成bmp或者jpg文件 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 论坛上很多人发帖问过啊搜一下吧。MSDN上也有例子的。 http://blog.csdn.net/bobob/archive/2005/02/20/294759.aspx http://topic.csdn.net/t/20000901/11/27870.htmlhttp://www.programfan.com/article/showarticle.asp?id=2788 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; } vs2008 ATL模板的ActiveX控件,无窗口句柄无法 settimer或者sendmessage,如何建立隐藏窗口完成这些操作? web页面ocx控件初始化的问题 关于VC动态曲线的问题 转换工具 如何得到<row...>中的元素个数? 该怎么做?谢谢 高手过招了,这里有个问题? 怎么得到应用程序类的指针?谢谢! 这十几年编程的不同认知层次——摘自聊天记录 MTS一定要装VB? VS2005中VC++2005有类似于VC++6.0的Class Wizard 功能吗? 多个mru的使用
MSDN上也有例子的。
http://www.programfan.com/article/showarticle.asp?id=2788