Multiple Views for a Document in MDI Application MFC

Question

I have a MDI application in which there are some reports and the Reports are printed and print preview in way that the was given by the MFC Printing Architecture.

But now the scenario changed and the Reports need to be formatted as a HTML File and need to be shown in the different perspective, based on a preference. I have choose a solution based on the Application architecture as there are many Document/View in my CWinApp. Created all Doc/view Templates there and the new Doc/View will be created based on the setting, once the application starts.

class CMyWinApp: public CWinApp
{
    public:
        virtual BOOL InitInstance();
    protected:

}

BOOL CMyWinApp::InitInstance()
{
    // Lot of Code Here
    CreateDocumentTemplates();
}

void CMyWinApp::CreateDocumentTemplates()
{

    // Some Other Doc/Templates are here


    if(m_bNewView) // Based on the Setting I am creating the new View and Old Doc
    {
        pDocTemplate = new CMultiDocTemplate(
            IDR_REPORTS,
            RUNTIME_CLASS(CMyDoc),
            RUNTIME_CLASS(CMyFrame), // custom MDI child frame
            RUNTIME_CLASS(CMyNewView));
        pDocTemplate->SetContainerInfo(IDR_TYPE_CNTR_IP);
        AddDocTemplate(pDocTemplate);   
    }
    else // This is a Old View and Doc
    {
        pDocTemplate = new CMultiDocTemplate(
            IDR_REPORTS,
            RUNTIME_CLASS(CMyDoc),
            RUNTIME_CLASS(CMyFrame), // custom MDI child frame
            RUNTIME_CLASS(CMyView));
        pDocTemplate->SetContainerInfo(IDR_TYPE_CNTR_IP);
        AddDocTemplate(pDocTemplate);
    }
}

Now the scenario is, this preference can be set anytime and the further Reports need to be shown in a appropriate context.

How this can be achieved on the run time? Please help me :(

You should follow imbtfab answer. The other way would be to do inplace switching of the view which is not so trivial. — zar

imbtfab imbtfab · Accepted Answer · 2014-04-24T19:57:10

In your app class, create and save both CMultiDocTemplate pointers from your CreateDocumentTemplates function and use these to create your documents on demand(e.g override ID_FILE_NEW/ID_FILE_OPEN or similar). Look at OpenDocumentFile of CDocTemplate.

Then in your OnFileNew function or similar you can use something like this: if(m_bNewView) { m_pNewDocTemplate->OpenDocumentFile(...); } else { m_pOldDocTemplate->OpenDocumentFile(...); }

Multiple Views for a Document in MDI Application MFC

2 Answers