fx_IsVGA()

Tests for installation of a VGA.

Syntax:
     fx_IsVGA()   ->   lInstalled

Arguments:
     None.

Returns:
     Returns a logical TRUE or FALSE value (.T./.F.) indicating whether
     or not a VGA system is installed.

Description:
     fx_IsVGA() can be used to determine if a VGA system is installed.
     A VGA is required to install the color effects system.  This
     command may be used at any time.

Examples:
     // If a VGA is installed, then install the color effects system.
     IF fx_IsVGA()
        fx_Enable()
     ENDIF