LOCATE_MOUSE

     Returns information on the window position of the pointer at the time
     the built-in is invoked.  Optionally returns a status integer
     indicating whether the pointer was found in a window.

  Syntax

     [integer3 := ] LOCATE_MOUSE (window, integer1, integer2)

  Parameters

     window               A parameter to which LOCATE_MOUSE returns the
                          window in which the pointer is located.  If the
                          pointer is not found, the built-in assigns the
                          type UNSPECIFIED to this parameter.

     integer1             A parameter to which LOCATE_MOUSE returns the
                          window-relative column position of the pointer.
                          If the pointer is not found, the built-in assigns
                          the type UNSPECIFIED to this parameter.

     integer2             A parameter to which LOCATE_MOUSE returns the
                          window-relative row position of the pointer.  You
                          can specify the status line using integer2.  If
                          the pointer is not found, the built-in assigns the
                          type UNSPECIFIED to this parameter.

     ingeter3             If you specify a return variable, LOCATE_MOUSE
                          returns 1 if the pointer was found, 0 otherwise.

  Comments

     In the non-DECwindows version of TPU, this built-in can only be used
     in programs, procedures, or learn sequences bound to mouse keys.  In
     the DECwindows version of TPU, LOCATE_MOUSE can be used any time
     after the first keyboard or mouse-button event.  The built-in returns
     the location occupied by the pointer cursor at the time of the most
     recent keyboard or mouse-button event.

  Example

     The following statement assigns to the parameter 'window_1' the window
     in which the pointer for the current mouse key is located.  The
     statement assigns to the parameter 'window_column' the column where the
     pointer is located.  the pointer.  The statement assigns to the
     parameter 'window_row' the row where the pointer is located.

     LOCATE_MOUSE (window_1, window_column, window_row);

  Related Topics

     POSITION