100 lines
2.8 KiB
Plaintext
100 lines
2.8 KiB
Plaintext
|
XIQUERYPOINTER(libmansuffix)
|
||
|
|
============================
|
||
|
|
|
||
|
|
NAME
|
||
|
|
----
|
||
|
|
|
||
|
|
XIQueryPointer - get device pointer coordinates.
|
||
|
|
|
||
|
|
SYNOPSIS
|
||
|
|
--------
|
||
|
|
|
||
|
|
#include <X11/extensions/XInput2.h>
|
||
|
|
|
||
|
|
Bool XIQueryPointer( Display *display,
|
||
|
|
int deviceid,
|
||
|
|
Window win,
|
||
|
|
Window *root_return,
|
||
|
|
Window *child_return,
|
||
|
|
double *root_x_return,
|
||
|
|
double *root_y_return,
|
||
|
|
double *win_x_return,
|
||
|
|
double *win_y_return,
|
||
|
|
XIButtonState *buttons_return,
|
||
|
|
XIModifierState *modifiers_return,
|
||
|
|
XIGroupState *group_return);
|
||
|
|
|
||
|
|
buttons_return
|
||
|
|
Returns the current button state.
|
||
|
|
|
||
|
|
child_return
|
||
|
|
Returns the child window that the pointer is located in,
|
||
|
|
if any.
|
||
|
|
|
||
|
|
deviceid
|
||
|
|
Specifies the device to query.
|
||
|
|
|
||
|
|
display
|
||
|
|
Specifies the connection to the X server.
|
||
|
|
|
||
|
|
group_return
|
||
|
|
Returns the current group state.
|
||
|
|
|
||
|
|
modifiers_return
|
||
|
|
Returns the current state of the modifier keys.
|
||
|
|
|
||
|
|
root_return
|
||
|
|
Returns the root window that the pointer is in.
|
||
|
|
|
||
|
|
root_x_return, root_y_return
|
||
|
|
Return the pointer coordinates relative to the root
|
||
|
|
window's origin.
|
||
|
|
|
||
|
|
win
|
||
|
|
Specifies the window.
|
||
|
|
|
||
|
|
win_x_return, win_y_return
|
||
|
|
Return the pointer coordinates relative to the specified
|
||
|
|
window.
|
||
|
|
|
||
|
|
DESCRIPTION
|
||
|
|
-----------
|
||
|
|
|
||
|
|
The XIQueryPointer function returns the root window the
|
||
|
|
device's pointer is logically on and the pointer coordinates
|
||
|
|
relative to the root window's origin. If XIQueryPointer returns
|
||
|
|
False, the pointer is not on the same screen as the specified
|
||
|
|
window, and XIQueryPointer returns None to child_return and
|
||
|
|
zero to win_x_return and win_y_return. If XIQueryPointer
|
||
|
|
returns True, the pointer coordinates returned to win_x_return
|
||
|
|
and win_y_return are relative to the origin of the specified
|
||
|
|
window. In this case, XIQueryPointer returns the child that
|
||
|
|
contains the pointer, if any, or else None to child_return.
|
||
|
|
|
||
|
|
XIQueryPointer returns the current logical state of the buttons
|
||
|
|
buttons_return. The keyboard paired with the master pointer is
|
||
|
|
selected to obtain the data for modifiers_return and
|
||
|
|
group_return.
|
||
|
|
|
||
|
|
XIQueryPointer is identical to XQueryPointer but specifies the
|
||
|
|
device explicitly.
|
||
|
|
|
||
|
|
XIQueryPointer can generate a BadDevice and a BadWindow error.
|
||
|
|
|
||
|
|
DIAGNOSTICS
|
||
|
|
-----------
|
||
|
|
|
||
|
|
BadDevice
|
||
|
|
An invalid device was specified. The device does not
|
||
|
|
exist or is not a pointer device.
|
||
|
|
|
||
|
|
BadWindow
|
||
|
|
A value for a Window argument does not name a defined
|
||
|
|
window.
|
||
|
|
|
||
|
|
SEE ALSO
|
||
|
|
--------
|
||
|
|
|
||
|
|
XQueryPointer(libmansuffix)
|
||
|
|
|