//+---------------------------------------------------------------------------
//
//  Microsoft Windows
//  Copyright (C) Microsoft Corporation, 1992 - 1994.
//
//  File:       frhost.idl
//
//  Contents:   definition for the IFractalHost interface
//
//  Classes:
//
//  Functions:
//
//  History:    4-13-94   stevebl   Created
//
//----------------------------------------------------------------------------

//+---------------------------------------------------------------------------
//
//  Class:      IFractalHost (fh)
//
//  Purpose:    interface implemented by host fractal app and used by fractal
//              engines
//
//  Interface:  SetGraphSize     -- asks host to change the graph size
//              GetGraphSize     -- asks host what its graph size is
//              GetPoint         -- gets the color at a given point
//              Rect             -- paints a rectangle
//              Line             -- draws a line between two points
//              Point            -- plots a point
//              DoneDrawingGraph -- notifies host app that the graph is done
//
//  History:    4-13-94   stevebl   Created
//              7-07-94   stevebl   modified definition of GetPoint
//
//----------------------------------------------------------------------------

[
    local,
    object,
    uuid(2a0e4ef4-3908-101b-8963-00000b65c75b),
    pointer_default(unique)
]

interface IFractalHost : IUnknown
{
    import "unknwn.idl";

    HRESULT SetGraphSize(unsigned uWidth, unsigned uHeight);
    HRESULT GetGraphSize(unsigned * puWidth, unsigned * puHeight);
    HRESULT GetPoint(unsigned * puColor, int x, int y);
    HRESULT Rect(
        int iLeft,
        int iTop,
        int iRight,
        int iBottom,
        unsigned uColor);
    HRESULT Line(
        int x1,
        int y1,
        int x2,
        int y2,
        unsigned uColor);
    HRESULT Point(
        int x,
        int y,
        unsigned uColor);
    HRESULT DoneDrawingGraph(void);
}
