from small one page howto to huge articles all in one place
 

search text in:





Poll
What does your sytem tell when running "ulimit -u"?








poll results

Last additions:
using iotop to find disk usage hogs

using iotop to find disk usage hogs

words:

887

views:

186380

userrating:

average rating: 1.7 (102 votes) (1=very good 6=terrible)


May 25th. 2007:
Words

486

Views

250361

why adblockers are bad


Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

words:

161

views:

137543

userrating:

average rating: 1.4 (42 votes) (1=very good 6=terrible)


April, 26th. 2006:

Druckversion
You are here: manpages





XQUERYDEVICESTATE

Section: \ \& (3)
Updated: 03/09/2013
Index Return to Main Contents
 

NAME

XQueryDeviceState - query the state of an extension input device.  

SYNOPSIS

#include <X11/extensions/XInput.h>

XDeviceState* XQueryDeviceState( Display *display,
                                 XDevice *device);

display
       Specifies the connection to the X server.

device
       Specifies the device whose state is to be queried.
 

DESCRIPTION

The XQueryDeviceState request queries the state of an input
device. The current state of keys and buttons (up or down), and
valuators (current value) on the device is reported by this
request. Each key or button is represented by a bit in the
XDeviceState structure that is returned. Valuators on the
device report 0 if they are reporting relative information, and
the current value if they are reporting absolute information.

XQueryDeviceState can generate a BadDevice error.

Structures:

The XDeviceState structure contains:

typedef struct {
    XID device_id;
    int num_classes;
    XInputClass *data;
} XDeviceState;

The XValuatorState structure contains:

typedef struct {
    unsigned char class;
    unsigned char length;
    unsigned char num_valuators;
    unsigned char mode;
    int *valuators;
} XValuatorState;

The XKeyState structure contains:

typedef struct {
    unsigned char class;
    unsigned char length;
    short     num_keys;
    char keys[32];
} XKeyState;

The XButtonState structure contains:

typedef struct {
    unsigned char class;
    unsigned char length;
    short     num_buttons;
    char buttons[32];
} XButtonState;
 

DIAGNOSTICS

BadDevice
       An invalid device was specified. The specified device
       does not exist or has not been opened by this client via
       XOpenInputDevice. This error may also occur if some
       other client has caused the specified device to become
       the X keyboard or X pointer device via the
       XChangeKeyboardDevice or XChangePointerDevice requests.


 

Index

NAME
SYNOPSIS
DESCRIPTION
DIAGNOSTICS





Support us on Content Nation
rdf newsfeed | rss newsfeed | Atom newsfeed
- Powered by LeopardCMS - Running on Gentoo -
Copyright 2004-2020 Sascha Nitsch Unternehmensberatung GmbH
Valid XHTML1.1 : Valid CSS : buttonmaker
- Level Triple-A Conformance to Web Content Accessibility Guidelines 1.0 -
- Copyright and legal notices -
Time to create this page: 17.7 ms