J2KTargetFileSize example for C++ 5.0 and later

   ILEADRasterIO *pIO=NULL;

   ::CoCreateInstance(CLSID_LEADRasterIO, NULL, CLSCTX_ALL,
                      IID_ILEADRasterIO, (void**)&pIO);
   // compress a 30K JPEG2000 file
   pIO->J2KSetDefaults();
   pIO->J2KCompressionControl = J2K_COMP_TARGETSIZE;
   pIO->J2KTargetFileSize = (30 * 1024);
   pIO->Save(m_LEADRasterView1.GetRaster(),
             "c:\\temp\\30k.j2k",
             FILE_J2K, 0, (QFactorConstants)0, SAVE_OVERWRITE);
   pIO->Release();