FRCNGN.IDL

//+--------------------------------------------------------------------------- 
// 
//  Microsoft Windows 
//  Copyright 1992 - 1998 Microsoft Corporation. 
// 
//  File:       frcngn.idl 
// 
//  Contents:   definition for IFractalEngine 
// 
//  History:    4-13-94   stevebl   Created 
// 
//---------------------------------------------------------------------------- 
 
//+--------------------------------------------------------------------------- 
// 
//  Class:      IFractalEngine (fe) 
// 
//  Purpose:    interface implemented by fractal engines 
// 
//  Interface:  Init          -- called first to initialize the engine 
//              SetDefaults   -- tells engine to choose default values for 
//                               all its properties 
//              SetProperties -- invokes the engine's property dialog box 
//              GetExtent     -- asks the engine what the max and min 
//                               values in the graph are 
//              SetExtent     -- asks the engine to change it's extent 
//              SetGraphSize  -- tells the engine how big its graph is 
//              Start         -- starts the graph engine 
//              Stop          -- stops the graph engine 
// 
//  History:    4-13-94   stevebl   Created 
// 
//---------------------------------------------------------------------------- 
 
[ 
    local, 
    object, 
    uuid(2a0e4f58-3908-101b-8963-00000b65c75b), 
    pointer_default(unique) 
] 
 
interface IFractalEngine : IUnknown 
{ 
    import "unknwn.idl"; 
    import "frhost.idl"; 
 
    HRESULT Init(IFractalHost * pfh); 
    HRESULT SetDefaults(void); 
    HRESULT SetProperties(HWND hwnd); 
    HRESULT GetExtent( 
        double * pdLeft, 
        double * pdTop, 
        double * pdRight, 
        double * pdBottom); 
    HRESULT SetExtent( 
        double dLeft, 
        double dTop, 
        double dRight, 
        double dBottom); 
    HRESULT SetGraphSize( 
        unsigned uWidth, 
        unsigned uHeight); 
    HRESULT Start(void); 
    HRESULT Stop(void); 
}