how can i remove error C2593: 'operator +=' is ambiguous in VC++

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i want to use this method connected with message WM_CHAR

this OnChar() is the event handler addeed to our view Class

C++

void CKeyStrokesView::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
    // TODO: Add your message handler code here and/or call default
    CKeyStrokesDoc *pDoc = GetDocument();
    ASSERT_VALID(pDoc);
    pDoc->stringdata += nChar;
    Invalidate();
    CView::OnChar(nChar, nRepCnt, nFlags);
}

stringdata is of type CString declared in CKeyStrokesDoc.h

Waiting for ur Reply

Regards
Sangita

Posted 22-Feb-10 0:43am

Sangita Patel

Updated 22-Feb-10 0:52am

Richard MacCutchan

v2

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Richard MacCutchan · Answer 1 · 2010-02-22T00:57:00

Solution 2

You define nChar as a UINT but CString() does not have an overload for this. Change the line to

pDoc->stringdata += (TCHAR)nChar;

Posted 22-Feb-10 0:57am

Richard MacCutchan

Eugen Podsypalnikov · Answer 2 · 2010-02-22T00:48:00

Solution 1

Try it :) :

...
CString cszTemp;
cszTemp.Format(_T("%u;"), nChar);
pcDoc->m_strData += cszTemp;
...

Posted 22-Feb-10 0:48am

Eugen Podsypalnikov