SpeedButton History
                       -------------------

    11.23   13/04/00    - IDCMP_MOUSEOBJECT will be used to detect the
                          mouse over the button when using MUI 4.

    11.22   11/04/00    - Now uses IDCMP_INTUITICKS instead of
                          IDCMP_MOUSEMOVE to detect the mouse over the
                          object.

    11.21   19/03/00    - Fixed long-standing bug which caused Enforcer
                          hits when using scaled images.

    11.19   09/03/00    - Replaced MUI_RequestIDCMP() with
                          MUIM_Window_AddEventHandler.

    11.18   29/10/99    - The scaling ratio for "Small buttons" can be
                          configured among the MUI options.
                          (Benny Kjær Nielsen)
                        - Fixed greyed small images on RTG screens.

    11.17   16/09/99    - Buttons now use the parent object background
                          when in borderless mode.

    11.16   03/09/99    - Images will be remapped only if ViewMode is
                          not text only. Any change to ViewMode must be
                          done in a MUIM_Group_InitChange/_ExitChange
                          pair (SpeedBar does it for you usually).

    11.15   31/08/99    - Added MUIA_SpeedButton_MinHeight

    11.14   30/08/99    - Changed RTG support to use WritePixelArray()
                          instead of allocating a PIXFMT_24BIT bitmap
                          and drawing on it manually.
                        - Fixed planar to chunky routine.

    11.13   30/08/99    - Fixed bug: one pen wasn't freed.
                        - Added RTG support: no pens will be used on
                          Hi/True colors screens for the images.