__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 #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