WSetShadow() - Sets the window shadow colours
 Sets the window shadow colours
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 Syntax

     WSetShadow( [<cAttr>] ) --> nOldAttr

 Argument

     <cAttr> is the color attribute for window shadows.  It can be
     represented  as a numeric string ("nn/nn") or as a color string
     ("cc/cc").  A value of -1 turns off the shadow display.

     ()  When you call the function without parameters, it returns the
     current shadow color setting.

 Returns

     WSetShadow() returns the previously set shadow color, or it returns -1
     if no shadow color has been set.

 Description

     WSetShadow() sets individual color attributes for shadows of every
     window, which are displayed below and to the right of each window.  The
     WSetShadow() setting then applies to all subsequently opened windows.

 Notes

     ■  using shadows erases the the contents of the active window prior to
        the drawing of the shadow

 Example

     In order to experiment with shadows, you should first fill the screen
     with a character like CHR(176):


     WSetShadow("N+")         // Gray shadows
     WOpen(1, 1, 10, 50)
     WBox()

     WSetShadow(-1)           // Switch shadow display off
     WOpen(15, 1, 20, 50)
     WBox()

     Inkey(0)                 // Switch on move mode using
                              // SCROLL-LOCK

     WAClose()

 Files:  Library is MRWINDOW.LIB.