__FB_GUI__

Intrinsic define (macro value) set by the compiler

Syntax
	__FB_GUI__

Description
	__FB_GUI__ indicates whether GUI subsystem mode is active at the current 
	point in compilation.

	Returns non-zero (-1) if the executable subsystem option -s gui was 
	specified, or if KeyPgPpPragma#Pragma Gui is active. Returns zero (0) otherwise.

Example
	#if __FB_GUI__ <> 0
	      #print Executable subsystem: gui
	#else 
	      #print Executable subsystem: console
	#endif

Version
	* Since fbc 1.06.0

Platform Differences
	* On Windows and Cygwin, this controls the linker subsystem.
	* Other targets may use the same mode value for target-specific startup 
	  or runtime behavior.

Differences from QB
	* New to FreeBASIC

See also
	* CompilerOptsCompiler Option: -s
	* KeyPgPpPragma#pragma

