MDI程序如何关闭子窗口？？？

Question

::SendMessage(::AfxGetMainWnd()->m_hWnd, WM_COMMAND,ID_FILE_CLOSE,0);

Answer 1

       CYourApp *pWinApp;
        pWinApp=(CYourApp* )AfxGetApp();
       CMDIFrameWnd *pFrame =(CMDIFrameWnd*)pWinApp->GetMainWnd ();
       MDIChildWnd *pChild =(CMDIChildWnd *) pFrame->GetActiveFrame();
       pChild->DestroyWindow ();//关闭

Answer 2

楼上的做法危险，会造成Doc数据的丢失。它会强行关闭窗口，但是不提醒你保存