New tcl/tk procedures

• windows.tcl
  • window_show win

    Bring the window to the top. Raise an error if the window does not exist.

  • window_exist win

    Return 0 if window does not exist.
    Raise the window to the top and return 1 else.

  • window_width_set win newwidth

    Set the width of a window.

  • window_height_set win newheight

    Set the height of a window.

  • slow_invoke_button button

    Invoke a button with the visual effect.

  • bind_alt_button basewin button key

    Bind a button to a event, with visual effect.

  • bind_nomod_button basewin button key

    Bind a button to a event, with visual effect.