XHPGetExtEventMask(3X)XHPGetExtEventMask(3X)NAMEXHPGetExtEventMask - Get an extension event mask.
SYNOPSIS
int XHPGetExtEventMask (display, event_constant, event_type, event_mask)
Display *display;
long event_constant;
long *event_type; /* RETURN */
Mask *event_mask; /* RETURN */
ARGUMENTS
display Specifies the connection to the X server.
event_constant
Specifies the constant corresponding to the desired event.
event_type Specifies the address of a variable in which the server can
return the event type of the desired event.
event_mask Specifies the address of a variable in which the server can
return the event mask for the desired event.
DESCRIPTION
This request is provided to support the use of input devices other than
the X pointer device and X keyboard device.
This request is part of an HP-proprietary extension to X. Its
functionality has been superseded by macros defined in the standard X
input device extension header file XInput.h. You should use the
standard input device extension instead of XHPGetExtEventMask if
possible.
XHPGetExtEventMask is used by client programs to determine the event
mask to be used in selecting extended events. The request passes a
constant to the server that corresponds to the desired event. The
server returns the event mask and event type for the desired event.
Valid constants that may be used by the client to request corresponding
event masks and types are:
HPDeviceKeyPressreq
HPDeviceKeyReleasereq
HPDeviceButtonPressreq
HPDeviceButtonReleasereq
HPDeviceMotionNotifyreq
HPDeviceFocusInreq
HPDeviceFocusOutreq
HPProximityInreq
HPProximityOutreq
HPDeviceKeymapNotifyreq
For example, if an X system was configured with an extension key
device, and a client program had determined the device ID of that
device via XHPListInputDevices, and the client program wished to
receive key presses from that device in window win, it would do the
following:
#include <XHPlib.h>
Display display;
Window win;
XID deviceid;
long devicekeypresstype;
Mask devicekeypressmask;
(connection to the X server)
(determining the device id via XHPListInputDevices)
XHPGetExtEventMask (display, HPDeviceKeyPressreq,
&devicekeypresstype, &devicekeypressmask);
XHPSelectExtensionEvent (display, window, deviceid,
devicekeypressmask);
XNextEvent (display, &event);
if (event.type == devicekeypresstype)
(process the event)
BadEvent The constant passed was not one of the valid constants.
RETURN VALUE
Returns the mask if successful, -1 if failed.
FILES
none
ORIGIN
Hewlett-Packard Company
SEE ALSOXHPListInputDevices(3x)XHPSelectExtensionEvent(3x)XHPGetCurrentDeviceMask(3x)X Version 11 Release 5 XHPGetExtEventMask(3X)
