Solved

Joystick Detection problem with Win API

Posted on 1997-06-13
1
555 Views
Last Modified: 2013-12-03
I have a SB16 with Joystick port in my pc, but no joystick attached to the port. My program checks for an attached joystick, otherwise it uses the mouse. To check if a joystick port exists, I use:

UINT NumDevices = joyGetNumDevs();

After this, NumDevices = 16. I have only one joystick port, should this not be 1?

Then I check to see which device is attached.
(Like shown in the win32 API Help file)

UINT Dev1Attached = joyGetPos(JOYSTICKID1,&joyinfo) != JOYERR_UNPLUGGED;
...

This gives no error, and the program thinks that 16 devices are avaiable and that device 1 is attached.
0
Comment
Question by:Claude050897
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 23

Accepted Solution

by:
chensu earned 50 total points
ID: 1398241
The joyGetNumDevs function queries the joystick driver for the number of joysticks it supports. In your case, it returns 16 which means your joystick driver supports 16 joysticks (but, as Win32 documentation says, joystick drivers can support either one or two joysticks). The return value does not indicate the number of joystick ports.

To check if a joystick is attached to the system, you'd better use:

BOOL bDev1Attached = joyGetPos(JOYSTICKID1,&joyinfo) == JOYERR_NOERROR;

0

Featured Post

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes how to add a user-defined command button to the Windows 7 Explorer toolbar.  In the previous article (http://www.experts-exchange.com/A_2172.html), we saw how to put the Delete button back there where it belongs.  "Delete" is …
In this article, I will show how to use the Ribbon IDs Tool Window to assign the built-in Office icons to a ribbon button.  This tool will help us to find the OfficeImageId that corresponds to our desired built-in Office icon. The tool is part of…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question