memdc.SelectObject(wxNullBitmap);
wxImage image = bitmap.ConvertToImage();
col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
memdc.SelectObject(wxNullBitmap);
wxImage image = bitmap.ConvertToImage();
col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));