updated for version 7.3.038

Problem:    v:windowid isn't set on MS-Windows.
Solution:   Set it to the window handle. (Chris Sutcliffe)

runtime/doc/eval.txt

@@ -1660,7 +1660,11 @@ v:warningmsg	Last given warning message.  It's allowed to set this variable.
 					*v:windowid* *windowid-variable*
 v:windowid	When any X11 based GUI is running or when running in a
 		terminal and Vim connects to the X server (|-X|) this will be
-		set to the window ID.  Otherwise the value is zero.
+		set to the window ID.
+		When an MS-Windows GUI is running this will be set to the
+		window handle.
+		Otherwise the value is zero.
+		Note: for windows inside Vim use |winnr()|.
 
 ==============================================================================
 4. Builtin Functions					*functions*

src/gui_w32.c

@@ -1573,6 +1573,11 @@ gui_mch_init(void)
 # endif
 #endif
 
+#ifdef FEAT_EVAL
+    /* set the v:windowid variable */
+    set_vim_var_nr(VV_WINDOWID, (long)s_hwnd);
+#endif
+
 theend:
     /* Display any pending error messages */
     display_errors();

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    38,
 /**/
     37,
 /**/