XIQueryPointer − get device pointer coordinates.
XIQueryPointer( Display *display,
Returns the current button state.
Returns the child window that the pointer is located in,
Specifies the device to query.
Specifies the connection to the X server.
Returns the current group state.
Returns the current state of the modifier keys.
Returns the root window that the pointer is in.
Return the pointer coordinates relative to the root
Specifies the window.
Return the pointer coordinates relative to the specified
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.
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
is identical to XQueryPointer but specifies the
XIQueryPointer can generate a BadDevice and a BadWindow error.
An invalid device was specified. The device does not
exist or is not a pointer device.
A value for a Window argument does not name a defined
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