CODEWITHSUNDEEP
c++mfc
manatttta
manatttta

Reputation: 3124

MFC How to notify the document is changed (and display the *)

I am used to, when I change a document for instance in Microsoft Word, it gets a * near the filename and the application automatically knows I should save the document.

How can I replicate this behaviour in MFC and notify my Document class of these changes, so that the app automatically knows the doc needs saving?

Upvotes: 1

Views: 2151

Answers (2)

Sebastien Beaulieu
Sebastien Beaulieu

Reputation: 33

A bit late, but I just had to do the same thing.

Once you set the document's modified flag, change the title. Here's an example: m_pDoc->SetModifiedFlag(bChanged);

        CString stTitle = m_pDoc->GetTitle();
        if (stTitle.Left(2) == _T(" *"))) {
            stTitle = stTitle.Left(stTitle.GetLength() - 2);
        }

        if (bChanged) {
            stTitle += _T(" *");
            m_pDoc->SetTitle(stTitle);
        }
        else {
            m_pDoc->SetTitle(stTitle);
        }

Upvotes: 2

Ami Tavory
Ami Tavory

Reputation: 76366

To notify the document that it is modified, you should use the CDocument::SetModified method, and to query whether it is modified, you can use the CDocument::IsModified. For the view, CView::OnUpdate is called when the document is updated.

Upvotes: 5

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