获取桌面图片，mfc环境

来源：互联网发布：php 调用存储过程编辑：程序博客网时间：2024/04/27 23:53

void CMultiplePlayDlg::GetPic()
{
   CWnd *pDesktop = GetDesktopWindow();
    CDC *pdeskdc = pDesktop->GetDC();
    CRect re;
    //获取窗口的大小
    pDesktop->GetClientRect(&re);
    CBitmap bmp;
    bmp.CreateCompatibleBitmap(pdeskdc, re.Width(), re.Height());
    //创建一个兼容的内存画板
    CDC memorydc;
    memorydc.CreateCompatibleDC(pdeskdc);
    //选中画笔
    CBitmap *pold = memorydc.SelectObject(&bmp);
    //绘制图像
    memorydc.BitBlt(0, 0, re.Width(), re.Height(), pdeskdc, 0, 0, SRCCOPY);
    //获取鼠标位置，然后添加鼠标图像
    CPoint po;
    GetCursorPos(&po);
    HICON hinco = (HICON)GetCursor();
    memorydc.DrawIcon(po.x - 10, po.y - 10, hinco);
    //选中原来的画笔
    memorydc.SelectObject(pold);
    BITMAP bit;
    bmp.GetBitmap(&bit);
    //定义图像大小（单位：byte）
    DWORD size = bit.bmWidthBytes * bit.bmHeight;
    LPSTR lpdata = (LPSTR)GlobalAlloc(GPTR, size);
    //后面是创建一个bmp文件的必须文件头
    BITMAPINFOHEADER pbitinfo;
    pbitinfo.biBitCount = 24;
    pbitinfo.biClrImportant = 0;
    pbitinfo.biCompression = BI_RGB;
    pbitinfo.biHeight = bit.bmHeight;
    pbitinfo.biPlanes = 1;
    pbitinfo.biSize = sizeof(BITMAPINFOHEADER);
    pbitinfo.biSizeImage = size;
    pbitinfo.biWidth = bit.bmWidth;
    pbitinfo.biXPelsPerMeter = 0;
    pbitinfo.biYPelsPerMeter = 0;
    GetDIBits(pdeskdc->m_hDC, bmp, 0, pbitinfo.biHeight, lpdata, (BITMAPINFO*)
        &pbitinfo, DIB_RGB_COLORS);
    BITMAPFILEHEADER bfh;
    bfh.bfReserved1 = bfh.bfReserved2 = 0;
    bfh.bfType = ((WORD)('M' << 8) | 'B');
    bfh.bfSize = size + 54;
    bfh.bfOffBits = 54;
    //写入文件
    CFile file;
   CString strFileName("D:\\");
    strFileName += _T("ScreenShot\\");
    CreateDirectory((LPCTSTR)strFileName, NULL);
    CTime t = CTime::GetCurrentTime();
    CString tt = t.Format("%Y-%m-%d_%H-%M-%S");
    strFileName += tt;
    strFileName += _T(".bmp");
    if (file.Open((LPCTSTR)strFileName, CFile::modeCreate | CFile::modeWrite))
    {
        file.Write(&bfh, sizeof(BITMAPFILEHEADER));
        file.Write(&pbitinfo, sizeof(BITMAPINFOHEADER));
        file.Write(lpdata, size);
        file.Close();
    }
    GlobalFree(lpdata);

}

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