VC++ 内嵌EXE

HANDLE handle;//process handle
HWND apphwnd = NULL;//window handle
BOOL find = FALSE;

/*************Global functions for hosting******************/
//Function to enumerate all windows.
int CALLBACK EnumWindowsProc(HWND hwnd, LPARAM param)
{
    DWORD pID;
    DWORD TpID = GetWindowThreadProcessId(hwnd, &pID);//get process id
    if (TpID == (DWORD)param)
    {
        apphwnd = hwnd;//hwnd is the window handle
        return false;
    }
    return true;
}


//Functio to start a orocess and return the process handle
HANDLE StartProcess(LPCTSTR program, LPCTSTR args)
{

     HANDLE hProcess = NULL;
     PROCESS_INFORMATION processInfo;
     STARTUPINFO startupInfo;
     ::ZeroMemory(&startupInfo, sizeof(startupInfo));
     startupInfo.cb = sizeof(startupInfo);
     if(::CreateProcess(program, (LPTSTR)args, 
                        NULL,  // process security
                        NULL,  // thread security
                        FALSE, // no inheritance
                        0,     // no startup flags
                        NULL,  // no special environment
                        NULL,  // default startup directory
                        &startupInfo,
                        &processInfo))
        { /* success */
            for (int i = 0; i < 150; i++)
            {
                Sleep(30);
                //WaitForInputIdle(processInfo.hProcess, 10000);
                 ::EnumWindows(&EnumWindowsProc, processInfo.dwThreadId);//Iterate all windows
                hProcess = processInfo.hProcess;
                if (apphwnd)        //找到相应的窗口
                    break;
            }
        } /* success */
     return hProcess;
}

/**********************************************************/
//handle for host menu
void CHostMSPaintDlg::OnActionHostmspaint() 
{
    CRect rect, rectWin, rectApp;
    GetClientRect(&rect);//get our dialog size into rect
    handle=StartProcess("C:\\WINDOWS\\system32\\mspaint.exe","");//Start ms paint
    if(apphwnd!=NULL)//check for window handle
        {
            ::SetParent(apphwnd,m_hWnd);//set parent of ms paint to our dialog.
            SetWindowLong(apphwnd, GWL_STYLE, GetWindowLong(apphwnd, GWL_STYLE) & ~WS_CAPTION);
            ::GetWindowRect(apphwnd, rectApp);
            GetWindowRect(rectWin);
            MoveWindow(rectWin.left, rectWin.top, rectWin.Width() + rectApp.Width() - rect.Width(), 
                rectWin.Height() + rectApp.Height() - rect.Height(), true);  //调整自身窗口大小迎合外部程序的大小
            GetClientRect(&rect);//get our dialog size into rect
            ::MoveWindow(apphwnd, rect.left, rect.top,rect.right, rect.bottom, true); //将外部程序移到自自身窗口里            
        }
    else//no window for our process
        MessageBox("没有找到相应的窗口，程序没有正确启动");    
}

//handle for kill process menu.
void CHostMSPaintDlg::OnActionKillprocess() 
{

    TerminateProcess(handle,0);    //kill the process using handle
    //::SetParent(apphwnd, NULL);
    //SetWindowLong(apphwnd, GWL_STYLE, GetWindowLong(apphwnd, GWL_STYLE) | WS_CAPTION);
    apphwnd = NULL;
}


BOOL CHostMSPaintDlg::DestroyWindow()
{
    OnActionKillprocess();

    return CDialog::DestroyWindow();
}

例子下载 https://files.cnblogs.com/kenter/MFC_ADD_EXE.zip