Beispiel #1
0
        private void ReadCountryList()
        {
            var lcl = new LINECOUNTRYLIST();

            int rc, neededSize = 30 * 1024; // 30K up front

            do
            {
                lcl.dwTotalSize = neededSize;
                IntPtr pLcl = Marshal.AllocHGlobal(neededSize);
                Marshal.StructureToPtr(lcl, pLcl, true);
                rc = NativeMethods.lineGetCountry(0, (int)TapiVersion.V21, pLcl);
                Marshal.PtrToStructure(pLcl, lcl);
                if (lcl.dwNeededSize > neededSize)
                {
                    neededSize = lcl.dwNeededSize;
                    rc         = NativeMethods.LINEERR_STRUCTURETOOSMALL;
                }
                else if (rc == NativeMethods.LINEERR_OK)
                {
                    var rawBuffer = new byte[lcl.dwUsedSize];
                    Marshal.Copy(pLcl, rawBuffer, 0, lcl.dwUsedSize);
                    for (int i = 0; i < lcl.dwNumCountries; i++)
                    {
                        _countries.Add(ReadCountryEntry(lcl, rawBuffer, i));
                    }
                }
                Marshal.FreeHGlobal(pLcl);
            }while (rc == NativeMethods.LINEERR_STRUCTURETOOSMALL);
        }
Beispiel #2
0
        private static Country ReadCountryEntry(LINECOUNTRYLIST lcl, byte[] rawBuffer, int pos)
        {
            var lce  = new LINECOUNTRYENTRY();
            int size = Marshal.SizeOf(lce);

            pos = lcl.dwCountryListOffset + (pos * size);
            IntPtr pLce = Marshal.AllocHGlobal(size);

            Marshal.Copy(rawBuffer, pos, pLce, size);
            Marshal.PtrToStructure(pLce, lce);
            Marshal.FreeHGlobal(pLce);

            return(new Country(lce.dwCountryID, lce.dwCountryCode,
                               NativeMethods.GetString(rawBuffer, lce.dwCountryNameOffset, lce.dwCountryNameSize, NativeMethods.STRINGFORMAT_UNICODE),
                               NativeMethods.GetString(rawBuffer, lce.dwSameAreaRuleOffset, lce.dwSameAreaRuleSize, NativeMethods.STRINGFORMAT_UNICODE),
                               NativeMethods.GetString(rawBuffer, lce.dwLongDistanceRuleOffset, lce.dwLongDistanceRuleSize, NativeMethods.STRINGFORMAT_UNICODE),
                               NativeMethods.GetString(rawBuffer, lce.dwInternationalRuleOffset, lce.dwInternationalRuleSize, NativeMethods.STRINGFORMAT_UNICODE)));
        }