#include<maya/MFnLight.h>
#include<maya/MItDag.h>

// create an iterator to go through all lights
MItDag it(MFn::kLight);

while(!it.isDone())
{

// attach the function set to the object MFnLight fn(it.item()); // print light name cout<<"Light "<< fn.name().asChar() <<endl; outputLight(it.item()); // get next light it.next();

}

#include<maya/MFnLight.h>
#include<maya/MFnDagNode.h>
#include<maya/MColor.h>
#include<maya/MFnPointLight.h>
#include<maya/MFnAmbientLight.h>
#include<maya/MFnDirectionalLight.h>
#include<maya/MFnSpotLight.h>
#include<maya/MFnAreaLight.h>

void outputLight(MObject& obj)
{

// attach a light function set to the object MFnLight fn(obj); MFnDagNode fnParent(fn.parent(0)); // get light color MColor color(0.0f,0.0f,0.0f); color = fnLight.color(); // output some light info cout << "parent " << fnParent.name().asChar() << "\ntype " << obj.apiTypeStr() << "\nColor " << color.r << " " << color.g << " " << color.b << "\n" << "intensity " << fn.intensity() << endl; // if you need to get specific attributes associated // with specific light types then use something // like this.... switch(obj.apiType()) {   // output pointlight only attributes case MFn::kPointLight: { MFnPointLight fnPoint(obj); } break; // output ambientlight only attributes case MFn::kAmbientLight: { MFnAmbientLight fnAmbient(obj); } break; // output spotlight only attributes case MFn::kSpotLight: { MFnSpotLight fnSpot(obj); } break; // output directional light only attributes case MFn::kDirectionalLight: { MFnDirectionalLight fnDir(obj); } break; // output arealight only attributes case MFn::kAreaLight: { MFnAreaLight fnArea(obj); } break; default: break; }

}