check for Xinitscr in pdcurses and define XCURSES if available

configure.in

@@ -69,6 +69,9 @@ if test "$pdcurses" = "XCurses" && test "$CURSES_CONFIG" != "" ; then
 else
 	AC_CHECK_LIB($curses_lib, initscr, LDFLAGS="$LDFLAGS -l$curses_lib", AC_MSG_ERROR([$ncurses_lib library is required]))
 fi
+if test "$pdcurses" != "no" ; then
+	AC_CHECK_LIB($curses_lib, Xinitscr, AC_DEFINE([XCURSES], [1], [x11 pdcurses available]), )
+fi
 AC_CHECK_HEADERS([curses.h], , AC_MSG_ERROR([missing ncurses.h header]))
 
 dnl =================================

src/window.cpp

@@ -41,12 +41,12 @@ void NCurses::InitScreen(const char *window_title, bool enable_colors)
 		COLOR_BLUE, COLOR_MAGENTA, COLOR_CYAN, COLOR_WHITE
 	};
 	setlocale(LC_ALL, "");
-#	if defined(USE_PDCURSES) && defined(XCURSES)
+#	ifdef XCURSES
 	Xinitscr(1, const_cast<char **>(&window_title));
 #	else
 	window_title = 0; // silence compiler
 	initscr();
-#	endif // USE_PDCURSES && XCURSES
+#	endif // XCURSES
 	if (has_colors() && enable_colors)
 	{
 		start_color();

src/window.h

@@ -25,10 +25,6 @@
 #include <config.h>
 #endif
 
-#if !defined(WIN32) && defined(USE_PDCURSES)
-# define XCURSES
-#endif // !WIND32 && USE_PDCURSES
-
 #include "curses.h"
 
 #include <stack>