C / C++ / MFC

HOWTO: Get Current CDocument or CView from Anywhere
Last reviewed: July 31, 1997
Article ID: Q108587

// View implementation file
CMyView * CMyView::GetView()
{
    CFrameWnd * pFrame = (CFrameWnd *)(AfxGetApp()->m_pMainWnd);
    CView * pView = pFrame->GetActiveView();

    if ( !pView )
      return NULL;

    // Fail if view is of wrong kind
    // (this could occur with splitter windows, or additional
    // views on a single document
    if ( ! pView->IsKindOf( RUNTIME_CLASS(CMyView) ) )
       return NULL;

    return (CMyView *) pView;
}

// MDI view implementation file
CMyView * CMyView::GetView()
{
    CMDIChildWnd * pChild =
    ((CMDIFrameWnd*)(AfxGetApp()->m_pMainWnd))->MDIGetActive();

    if ( !pChild )
       return NULL;

    CView * pView = pChild->GetActiveView();

    if ( !pView )
    return NULL;

    // Fail if view is of wrong kind
    if ( ! pView->IsKindOf( RUNTIME_CLASS(CMyView) ) )
    return NULL;

    return (CMyView *) pView;
}

CMyView::GetView();