Method Format

DuiLib/Utils/Utils.cpp:708–771

	}
    
    int CDuiString::Format(LPCTSTR pstrFormat, va_list Args)
    {
#if _MSC_VER <= 1400

        TCHAR *szBuffer = NULL;
        int size = 512, nLen, counts;

        //
        //  allocate with init size
        //

        szBuffer = (TCHAR*)malloc(size);
        ZeroMemory(szBuffer, size);

        while (TRUE){
            counts = size / sizeof(TCHAR);
            nLen = _vsntprintf (szBuffer, counts, pstrFormat, Args);
            if (nLen != -1 && nLen < counts){
                break;
            }

            //
            //  expand the buffer.
            //

            if (nLen == -1){
                size *= 2;
            }else{
                size += 1 * sizeof(TCHAR);
            }


            //
            //  realloc the buffer.
            //

            if ((szBuffer = (TCHAR*)realloc(szBuffer, size)) != NULL){
                ZeroMemory(szBuffer, size);
            }else{
                break;
            }

        }

        Assign(szBuffer);
        free(szBuffer);
        return nLen;
#else
        int nLen, totalLen;
        TCHAR *szBuffer;

        nLen = _vsntprintf(NULL, 0, pstrFormat, Args);
        totalLen = (nLen + 1)*sizeof(TCHAR);
        szBuffer = (TCHAR*)malloc(totalLen);
        ZeroMemory(szBuffer, totalLen);
        nLen = _vsntprintf(szBuffer, nLen + 1, pstrFormat, Args);

        Assign(szBuffer);