Here is a list of all documented class members with links to the class documentation for each member:

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• object() : MFnBase , MObjectHandle
• objectAttribute() : MPxConstraintCommand
• objectChanged() : Checkpointed
• objectColor() : MFnDagNode , MPxLocatorNode , MPxSurfaceShape , MPxTransform
• objectColorIndex() : MFnDagNode
• objectColorRGB() : MFnDagNode
• objectColorType() : MFnDagNode
• objectDisplay() : M3dView , MPx3dModelView
• objectDisplayStatus() : MDrawInfo
• objectGroup() : MFnGeometryData
• objectGroupColor : MPxLocatorNode , MPxSurfaceShape , MPxTransform
• objectGroupComponent() : MFnGeometryData
• objectGroupCount() : MFnGeometryData
• objectGroupId : MPxLocatorNode , MPxSurfaceShape , MPxTransform
• objectGroups : MPxLocatorNode , MPxSurfaceShape , MPxTransform
• objectGroupSubsetState() : MFnGeometryData
• objectGroupType() : MFnGeometryData
• objectGrpCompList : MPxLocatorNode , MPxSurfaceShape , MPxTransform
• objectHashCode() : MObjectHandle
• objectListFilterName() : M3dView
• objectName() : MGeometryData
• objectOwnsData() : MGeometryData
• objectRef() : MObjectHandle
• objectSelectionMask() : MGlobal
• objectSetOverride() : MSceneRender
• objectToWorldMatrix() : MGeometryList
• objectTypeExclusionFlag() : MRenderItem
• objectTypeExclusions() : MFrameContext , MSceneRender
• objFilterType : MIteratorType
• offset() : MVertexBufferDescriptor , MPxImagePlane
• offsetAttribute() : MPxConstraintCommand
• offsetParentMatrix : MPxTransform
• offsetX : MPxImagePlane
• offsetY : MPxImagePlane
• okForMultipleDraw() : MPx3dModelView
• onBoundary() : MFnMesh , MItMeshEdge , MItMeshPolygon , MItMeshVertex
• one : MFloatVector , MVector
• opacity() : MFnParticleSystem , MFnStandardSurfaceShader
• open() : MFileIO , MIffFile , MPxCacheFormat , MPxImageFile
• openDevice() : MPxMidiInputDevice
• openFbo() : MPxGlBuffer
• OpenSubdivCreaseMethod : MMeshSmoothOptions
• openSubdivCreaseMethod() : MMeshSmoothOptions
• openSubdivFaceVaryingBoundary() : MMeshSmoothOptions
• openSubdivSmoothTriangles() : MMeshSmoothOptions
• OpenSubdivVertexBoundary : MMeshSmoothOptions
• openSubdivVertexBoundary() : MMeshSmoothOptions
• operationType() : MRenderOperation
• operator bool() : MSharedPtr< T > , MStatus , MTimeRange
• operator IndexCount() : Index
• operator IndexType *() : Index
• operator MMatrix() : MQuaternion
• operator MObject() : MPlug
• operator MString() : MUuid
• operator!() : MAutoCLEvent , MAutoCLKernel , MAutoCLMem , MPlug
• operator!=() : Index , IndexPair , IndexString , IndexType , StreamIterator , Structure , StructureIteratorImpl , MAttributeIndex , MColor , MCursor , MEulerRotation , MFloatMatrix , MFloatPoint , MFloatVector , MMatrix , MObject , MObjectHandle , MPlug , MPoint , MPxTransformationMatrix , MQuaternion , MSharedPtr< T > , MStatus , MString , MStringResourceId , MTime , MTimer , MTransformationMatrix , MTypeId , MUniqueString , MURI , MUuid , MVector
• operator()() : Accessor::StructureNameLessThan , MColor , MFloatMatrix , MFloatPoint , MFloatVector , MMatrix , MPoint , MVector
• operator*() : StreamIterator , StructureIteratorImpl , MColor , MEulerRotation , MFloatMatrix , MFloatPoint , MFloatVector , MMatrix , MPoint , MQuaternion , MSharedPtr< T > , MTime , MVector
• operator*=() : MColor , MEulerRotation , MFloatMatrix , MFloatPoint , MFloatVector , MMatrix , MPoint , MQuaternion , MTime , MVector
• operator+() : MColor , MEulerRotation , MFloatMatrix , MFloatPoint , MFloatVector , MMatrix , MPoint , MQuaternion , MString , MTime , MVector
• operator++() : StreamIterator , StructureIteratorImpl , MTime
• operator+=() : MColor , MEulerRotation , MFloatMatrix , MFloatPoint , MFloatVector , MMatrix , MPoint , MString , MTime , MVector
• operator-() : MColor , MEulerRotation , MFloatMatrix , MFloatPoint , MFloatVector , MMatrix , MPoint , MQuaternion , MTime , MVector
• operator--() : MTime
• operator-=() : MEulerRotation , MFloatMatrix , MFloatPoint , MFloatVector , MMatrix , MPoint , MTime , MVector
• operator->() : StreamIterator , StructureIteratorImpl , MSharedPtr< T >
• operator/() : MColor , MFloatPoint , MFloatVector , MPoint , MTime , MVector
• operator/=() : MColor , MFloatVector , MTime , MVector
• operator<() : Index , IndexPair , IndexString , IndexType , MAutoCLEvent , MAutoCLKernel , MAutoCLMem , MSharedPtr< T > , MTime , MUniqueString
• operator<<() : Print , MArgList , MAttributePatternArray , MCallbackIdArray , MColor , MColorArray , MDagPathArray , MDoubleArray , MEulerRotation , MFloatArray , MFloatMatrix , MFloatPoint , MFloatPointArray , MFloatVector , MFloatVectorArray , MInt64Array , MIntArray , MMatrix , MMatrixArray , MPoint , MPointArray , MPxMayaAsciiFilterOutput , MPxTransformationMatrix , MQuaternion , MStatus , MString , MStringArray , MTime , MTimeArray , MUint64Array , MUintArray , MVector , MVectorArray
• operator<=() : Index , IndexPair , IndexString , IndexType , MSharedPtr< T > , MTime , MUniqueString
• operator=() : Checkpointed , Associations , Channel , Handle , Index , IndexPair , IndexString , Stream , StreamIterator , Structure , StructureIteratorImpl , Count , Print , MAngle , MAnimCurveClipboardItem , MAnimCurveClipboardItemArray , MArgList , MArrayDataBuilder , MArrayDataHandle , MAttributeIndex , MAttributePattern , MAttributePatternArray , MAttributeSpec , MAttributeSpecArray , MAutoCLEvent , MAutoCLKernel , MAutoCLMem , MBoundingBox , MCallbackIdArray , MColor , MColorArray , MCursor , MCurveAttribute , MDagPath , MDagPathArray , MDataHandle , MDGContext , MDistance , MDoubleArray , MDrawData , MDrawRequest , MDrawRequestQueue , MEulerRotation , MEvaluationNodeIterator , MFileObject , MFloatArray , MFloatMatrix , MFloatPoint , MFloatPointArray , MFloatVector , MFloatVectorArray , MGeometryLegacy , MGPUDeformerBuffer , MBlendStateDesc , MDepthStencilStateDesc , MRasterizerStateDesc , MRenderParameters , MSamplerStateDesc , MStencilOpDesc , MTargetBlendDesc , MVertexBufferDescriptor , MInt64Array , MIntArray , MManipData , MMaterialArray , MMatrix , MMatrixArray , MObject , MObjectArray , MObjectHandle , MOpenCLBuffer , MPlug , MPlugArray , MPoint , MPointArray , MPxTransform , MPxTransformationMatrix , MPxTransformPreRotation , MQuaternion , MRampAttribute , MRenderLine , MRenderLineArray , MSelectionList , MSelectionMask , MSharedPtr< T > , MStatus , MString , MStringArray , MStringResourceId , MSyntax , MTesselationParams , MTime , MTimeArray , MTimer , MTransformationMatrix , MTypeId , MUint64Array , MUintArray , MUniformParameter , MUniformParameterList , MUniqueString , MURI , MUuid , MVaryingParameter , MVaryingParameterList , MVector , MVectorArray , MWeight
• operator==() : Channel , Index , IndexPair , IndexString , IndexType , Stream , StreamIterator , Structure , StructureIteratorImpl , MAnimCurveClipboardItem , MAttributeIndex , MAttributePattern , MAttributeSpec , MAutoCLEvent , MAutoCLKernel , MAutoCLMem , MColor , MCursor , MDagPath , MEulerRotation , MFloatMatrix , MFloatPoint , MFloatVector , MIffTag , MMatrix , MObject , MObjectHandle , MPlug , MPoint , MPxTransformationMatrix , MQuaternion , MSharedPtr< T > , MStatus , MString , MStringResourceId , MTime , MTimer , MTimeRange , MTransformationMatrix , MTypeId , MUniqueString , MURI , MUuid , MVector
• operator>() : Index , IndexPair , IndexString , MSharedPtr< T > , MTime , MUniqueString
• operator>=() : Index , IndexPair , IndexString , MSharedPtr< T > , MTime , MUniqueString
• operator[]() : Associations , MAnimCurveClipboardItemArray , MAttributePatternArray , MAttributeSpec , MAttributeSpecArray , MCallbackIdArray , MColor , MColorArray , MDagPathArray , MDoubleArray , MEulerRotation , MFloatArray , MFloatMatrix , MFloatPoint , MFloatPointArray , MFloatVector , MFloatVectorArray , MFnComponentListData , MFnDoubleArrayData , MFnFloatArrayData , MFnFloatVectorArrayData , MFnIntArrayData , MFnMatrixArrayData , MFnPointArrayData , MFnStringArrayData , MFnUInt64ArrayData , MFnUintArrayData , MFnVectorArrayData , MComponentDataIndexingList , MRenderOperationList , MInt64Array , MIntArray , MMaterialArray , MMatrix , MMatrixArray , MObjectArray , MPlug , MPlugArray , MPoint , MPointArray , MQuaternion , MStringArray , MTimeArray , MTrimBoundaryArray , MUint64Array , MUintArray , MVector , MVectorArray
• operator^() : MFloatVector , MVector
• operator|() : MSelectionMask , MTimeRange
• opticalFXvisibility() : MFnLight
• optionVarDoubleValue() : MGlobal
• optionVarExists() : MGlobal
• optionVarIntValue() : MGlobal
• optionVarStringValue() : MGlobal
• order : MEulerRotation , MPxCameraSet
• orientationMarkerTime : MPxMotionPathNode
• orientMatrix : MPxMotionPathNode
• origin : MFloatPoint , MFnBlendShapeDeformer
• Origin : MFnBlendShapeDeformer
• origin : MPoint
• originalParticleShape() : MFnParticleSystem
• originX() : MRenderingInfo
• originY() : MRenderingInfo
• orthoWidth() : MFnCamera
• outColor : MPxHardwareShader , MPxHwShaderNode
• outColorB : MPxHardwareShader , MPxHwShaderNode
• outColorG : MPxHardwareShader , MPxHwShaderNode
• outColorPP : MPxParticleAttributeMapperNode
• outColorR : MPxHardwareShader , MPxHwShaderNode
• outGlowColor : MPxHwShaderNode
• outGlowColorB : MPxHwShaderNode
• outGlowColorG : MPxHwShaderNode
• outGlowColorR : MPxHwShaderNode
• outMatteOpacity : MPxHwShaderNode
• outMatteOpacityB : MPxHwShaderNode
• outMatteOpacityG : MPxHwShaderNode
• outMatteOpacityR : MPxHwShaderNode
• outMaxValue : MPxParticleAttributeMapperNode
• outMinValue : MPxParticleAttributeMapperNode
• output : MPxThreadedDeviceNode
• outputArrayValue() : MArrayDataHandle , MDataBlock
• outputForConnection() : MPxShadingNodeOverride
• outputGeom : MPxGeometryFilter
• outputMeshAttribute() : MGPUDeformerRegistrationInfo
• outputShapeAtIndex() : MFnGeometryFilter
• outputTargets() : MRenderOperation
• outputTargetSize() : MRenderer
• outputValue() : MArrayDataHandle , MDataBlock
• outTangentType() : MFnAnimCurve , MItKeyframe
• outTransparency : MPxHwShaderNode
• outTransparencyB : MPxHwShaderNode
• outTransparencyG : MPxHwShaderNode
• outTransparencyR : MPxHwShaderNode
• outValuePP : MPxParticleAttributeMapperNode
• override() : MViewportRenderer
• overrideColor : MPxTransform
• overrideDisplayType : MPxTransform
• overrideEnabled : MPxTransform
• overrideLevelOfDetail : MPxTransform
• overrideName : MFrameContext::RenderOverrideInformation
• OverrideNonMaterialItem : MRenderItem
• overridePlayback : MPxTransform
• overrideResolvedFullName() : MFileObject
• overridesColors() : MClearOperation
• overridesDrawState() : MPxShaderOverride
• overrideShading : MPxTransform
• overridesNonMaterialItems() : MPxShaderOverride
• overrideTexturing : MPxTransform
• overrideThenStandardExclusion() : MViewportRenderer
• overrideVisibility : MPxTransform
• overscan() : MFnCamera
• ownerGraph() : MCustomEvaluatorClusterNode , MEvaluationGraph , MTopologyClusterNode