FRHOST.IDL

//+--------------------------------------------------------------------------- 
//
// Microsoft Windows
// Copyright 1992 - 1998 Microsoft Corporation.
//
// 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);
}