XIQueryPointer.txt

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Author : matthieu
Date : 2011-07-02 21:14:36
Hash : d9324170
Message : Update to libXi 1.4.2. Tested by ajacoutot@, jasper@, krw@, shadchin@. I believe that the bugs spotted by krw@ are fixed in an upcoming inputproto update.

lib/libXi/man/XIQueryPointer.txt

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.

   The mask field in buttons_return is dynamically allocated and
   must be freed by the caller.

   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)

IABSD.fr/xenocara/lib/libXi/man/XIQueryPointer.txt

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IABSD.fr/xenocara /lib/libXi/man/XIQueryPointer.txt