Someone

#if 0
// #ifdef _WIN32	// FULLSCREEN
	if(U.uiflag & USER_FLIPFULLSCREEN) {
		uiDefIconBut(block, BUT, B_FLIPFULLSCREEN, ICON_WINDOW_WINDOW,
				(short)(curarea->winx-XIC-5), 0,XIC,YIC,
				0, 0, 0, 0, 0, "Toggles Blender to fullscreen mode");/* dir		*/
	} else {
		uiDefIconBut(block, BUT, B_FLIPFULLSCREEN, ICON_WINDOW_FULLSCREEN,
				(short)(curarea->winx-XIC-5), 0,XIC,YIC,
				0, 0, 0, 0, 0, "Toggles Blender to fullscreen mode");/* dir		*/
	}
#endif