GetFunctionalLookupTable example for C++ 5.0 and later
ILEADRasterProcess *pRasterProc=NULL;
CoCreateInstance(CLSID_LEADRasterProcess, NULL, CLSCTX_ALL, IID_ILEADRasterProcess, (void**)&pRasterProc);
pRasterProc->GetFunctionalLookupTable(0, 255, 5, GL_EXP);
pRasterProc->RemapIntensity (m_RasterView1.GetRaster(), CHANNEL_MASTER);
pRasterProc->Release();