Sendmessage: from one thread to mainthread (CFormView)

From:
mfc <mfcprog@googlemail.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Sun, 5 Sep 2010 11:01:36 -0700 (PDT)
Message-ID:
<42aff4db-e6fe-4ed5-8f5e-7518f74a0be5@i5g2000yqe.googlegroups.com>
Hi,

I`m new to MFC; therefore I want to know if I do the right thing on
the right place :-). My mfc project is a unicode sdi application.

In my cdoc OnNewDocument class I load a xml file including all the
user-specific data. I hope this would be the right place to do that.
All xml nodes are stored in a cstringlist in the cdoc class.

BOOL CMIAppDoc::OnNewDocument()
{
if (!CDocument::OnNewDocument())
     return FALSE;

// Initialize COM
::CoInitialize(NULL);

//CStringList *m_XmlList; declaration in the cdoc header file
m_XmlList = XmlFile.LoadUserXml();

return TRUE;
}

To get this CStringList for each view - simple call
OnUpdateAllViews().

But which would be a suitable / recommend way to get the CStringList
m_XmlList to a non-mfc class? For example, I`ve installed a webserver
with a class HttpServer, which loads the specific html resource and
adds these information (inlcuded in m_XmlList) to the webpage.

class HttpServer
{
public:
    HttpServer(void);
    ~HttpServer(void);
//and so on
}

BOOL HttpServer::GetFileRequest()
{
CString protoHTML("");
CString userHTML("");

//load html resource
if (GetHTML(id , protoHTML) == true)
{
    //get xml file resource from CFormView

    CFrameWnd * pFrame = (CFrameWnd *)(AfxGetApp()->m_pMainWnd) ;
    CView * pView = pFrame->GetActiveView() ;
    CStringList *plist = (CStringList *)pView-

SendMessage(UWM_GET_WEB_XML, 0, 0);


    POSITION Position = plist->GetHeadPosition();
   userHTML.FormatMessage(protoHTML, plist->GetAt(Position), plist-

GetNext(Position), plist->GetNext(Position));


}
}

In my CFormView I`ve added this small method to get the CStringlist
with the specific xml user data.

LRESULT CMIAppView::OnGetXmlList(WPARAM wParam, LPARAM)
{
    TRACE(_T("get-xml-user-data\n"));

    return((LRESULT)m_XmlUserList);
}

But is the way I`m trying to send a message to the CFormView class
really a good solution? Moreover the class HttpServer is included in
another thread which is generated if a new socket connection is
established.

I often read in the www that you should only use PostThreadMessage()
and not SendMessage; but in this case I need the information (xml user
data) before executing the next step in the HttpServer-class method.

best regards
Hans

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