C ++ MFC MDI如何更改基于活动文档显示的类视图

Question

I'm working on an MDI application that has an object browser (CClassView) that has to change what it displays based on what "document" is active.

PS: None of my searches have worked.

Answer 1

This isn't what I expected, but here's a possible solution:

http://forums.codeguru.com/showthread.php?473808-MFC-Doc-View-How-to-get-the-active-document-anywhere-in-my-application

Q: How to get the active document anywhere in my application?

A: There are several methods, one is to get first the active frame then call CFrameWnd::GetActiveDocument. ... In MDI applications, we have to additionally get the active MDI child frame.

CDocument* GetMDIActiveDocument()
{
    CDocument* pDoc = NULL;

    CWnd* pWndMain = AfxGetMainWnd();
    ASSERT(pWndMain);
    ASSERT(pWndMain->IsKindOf(RUNTIME_CLASS(CMDIFrameWnd))); // Not an MDI app.

    CFrameWnd* pFrame = ((CMDIFrameWnd*)pWndMain)->MDIGetActive();
    if(NULL != pFrame)
    {
        pDoc = pFrame->GetActiveDocument(); // get the active document
    }
    return pDoc;
}

This sample code might suggest other (perhaps even better) alternatives:

http://msdn.microsoft.com/en-us/library/cstcs513%28v=vs.90%29.aspx