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XQueryPointer(3)


NAME

   XQueryPointer - get pointer coordinates

SYNTAX

   Bool XQueryPointer(Display *display, Window w, Window *root_return,
          Window *child_return, int *root_x_return, int *root_y_return,
          int *win_x_return, int *win_y_return, unsigned int
          *mask_return);

ARGUMENTS

   child_return
             Returns the child window that the pointer is located in, if
             any.

   display   Specifies the connection to the X server.

   mask_return
             Returns the current state of the modifier keys and pointer
             buttons.

   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.

   w         Specifies the window.

   win_x_return
   win_y_return
             Return the pointer coordinates relative to the specified
             window.

DESCRIPTION

   The XQueryPointer function returns the root window the pointer is
   logically on and the pointer coordinates relative to the root window's
   origin.  If XQueryPointer returns False, the pointer is not on the same
   screen as the specified window, and XQueryPointer returns None to
   child_return and zero to win_x_return and win_y_return.  If
   XQueryPointer 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, XQueryPointer returns the child that
   contains the pointer, if any, or else None to child_return.

   XQueryPointer returns the current logical state of the keyboard buttons
   and the modifier keys in mask_return.  It sets mask_return to the
   bitwise inclusive OR of one or more of the button or modifier key
   bitmasks to match the current state of the mouse buttons and the
   modifier keys.

   XQueryPointer can generate a BadWindow error.

DIAGNOSTICS

   BadWindow A value for a Window argument does not name a defined Window.

SEE ALSO

   XGetWindowAttributes(3), XQueryTree(3)
   Xlib - C Language X Interface



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