215 lines
4.1 KiB
Groff
215 lines
4.1 KiB
Groff
'\" t
|
|
.\" Title: xiselectevents
|
|
.\" Author: [FIXME: author] [see http://docbook.sf.net/el/author]
|
|
.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
|
|
.\" Date: 08/04/2010
|
|
.\" Manual: [FIXME: manual]
|
|
.\" Source: [FIXME: source]
|
|
.\" Language: English
|
|
.\"
|
|
.TH "XISELECTEVENTS" "libmansuffix" "08/04/2010" "[FIXME: source]" "[FIXME: manual]"
|
|
.\" -----------------------------------------------------------------
|
|
.\" * set default formatting
|
|
.\" -----------------------------------------------------------------
|
|
.\" disable hyphenation
|
|
.nh
|
|
.\" disable justification (adjust text to left margin only)
|
|
.ad l
|
|
.\" -----------------------------------------------------------------
|
|
.\" * MAIN CONTENT STARTS HERE *
|
|
.\" -----------------------------------------------------------------
|
|
.SH "NAME"
|
|
XISelectEvents, XIGetSelectedEvents \- select for or get selected XI2 events on the window\&.
|
|
.SH "SYNOPSIS"
|
|
.sp
|
|
.nf
|
|
#include <X11/extensions/XInput2\&.h>
|
|
.fi
|
|
.sp
|
|
.nf
|
|
Status XISelectEvents( Display *display,
|
|
Window win,
|
|
XIEventMask *masks,
|
|
int num_masks);
|
|
.fi
|
|
.sp
|
|
.nf
|
|
display
|
|
Specifies the connection to the X server\&.
|
|
.fi
|
|
.sp
|
|
.nf
|
|
masks
|
|
Device event mask\&.
|
|
.fi
|
|
.sp
|
|
.nf
|
|
num_masks
|
|
Number of masks in masks\&.
|
|
.fi
|
|
.sp
|
|
.nf
|
|
win
|
|
Specifies the window\&.
|
|
.fi
|
|
.sp
|
|
.nf
|
|
XIEventMask *XIGetSelectedEvents( Display *display,
|
|
Window win,
|
|
int *num_masks_return);
|
|
.fi
|
|
.sp
|
|
.nf
|
|
display
|
|
Specifies the connection to the X server\&.
|
|
.fi
|
|
.sp
|
|
.nf
|
|
num_masks_return
|
|
Number of masks in the return value\&.
|
|
.fi
|
|
.sp
|
|
.nf
|
|
win
|
|
Specifies the window\&.
|
|
.fi
|
|
.SH "DESCRIPTION"
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
XI2 events must be selected using XISelectEvents\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
XISelectEvents sets the event mask for this client on win\&.
|
|
Further events are only reported to this client if the event
|
|
type matches the selected event mask\&. The masks overrides the
|
|
previously selected event mask for the given device\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
If deviceid is a valid device, the event mask is selected only
|
|
for this device\&. If deviceid is XIAllDevices or
|
|
XIAllMasterDevices, the event mask is selected for all devices
|
|
or all master devices, respectively\&. The effective event mask
|
|
is the bit\-wise OR of the XIAllDevices, XIAllMasterDevices and
|
|
the respective device\'s event mask\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
typedef struct {
|
|
int deviceid;
|
|
int mask_len;
|
|
unsigned char* mask;
|
|
} XIEventMask;
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
The mask_len specifies the length of mask in bytes\&. mask is a
|
|
binary mask in the form of (1 << event type)\&. deviceid must be
|
|
either a device or XIAllDevices or XIAllMasterDevices\&. A client
|
|
may submit several masks with the same deviceid in one request
|
|
but only the last mask will be effective\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
XISelectEvents can generate a BadValue, a BadDevice, and a
|
|
BadWindow error\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
XIGetSelectedEvents returns the events selected by this client on the given
|
|
window\&. If no events were selected on this window, XIGetSelectedEvents
|
|
returns NULL and num_masks_return is set to 0\&. If an internal error occurs,
|
|
XIGetSelectedEvents returns NULL and num_masks_return is set to \-1\&.
|
|
Otherwise, XIGetSelectedEvent returns the selected event masks for all
|
|
devices including the masks for XIAllDevices and XIAllMasterDevices
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
The caller must free the returned data using XFree()\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.SH "DIAGNOSTICS"
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
BadValue
|
|
A value is outside of the permitted range\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
BadWindow
|
|
A value for a Window argument does not name a defined
|
|
window\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|
|
.sp
|
|
.if n \{\
|
|
.RS 4
|
|
.\}
|
|
.nf
|
|
BadDevice
|
|
An invalid device was specified\&. The device does not
|
|
exist\&.
|
|
.fi
|
|
.if n \{\
|
|
.RE
|
|
.\}
|