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XIQUERYPOINTER(3)								XIQUERYPOINTER(3)

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(3)

					    03/09/2013				XIQUERYPOINTER(3)
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