//-----------------------------------------------------------------------------
//
// Sample Name: FFConst Sample
//
// Copyright (c) 1998-2001 Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
Description
===========
This application applies raw forces to a force feedback input device,
illustrating how a simulator-type application can use force feedback to
generate forces computed by a physics engine.
You must have a force feedback device connected to your system in order to
run the application.
Path
====
Source: DXSDK\Samples\Multimedia\DInput\FFConst
Executable: DXSDK\Samples\Multimedia\DInput\Bin
User's Guide
============
When you run the application, it displays a window with a crosshair and a
black spot in it. Click the mouse anywhere within the window's client area to
move the black spot. (Note that moving the device itself does not do
anything.) FFConst exerts a constant force on the device from the
direction of the spot, in proportion to the distance from the crosshair. You
can also hold down the mouse button and move the spot continuously.
Programming Notes
=================
This sample program enumerates the input devices and acquires the first
force-feedback device that it finds. If none are detected, it displays a
message and terminates.
When the user moves the black spot, the joySetForcesXY function converts the
cursor coordinates to a force direction and magnitude. This data is used to
modify the parameters of the constant force effect.
LGram16
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