X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=filebrowser%2Fdraw.c;h=048fa858ebb31da66446cf1be0091916256f6e0c;hb=71c3de687d33523d83dec50208b0e44815fd7d20;hp=46ed663118336f907a69e1d03c8ad6b01c4c11fd;hpb=5dca19a2828b0e6e0594b734792533e0c4f76146;p=xboard.git

diff --git a/filebrowser/draw.c b/filebrowser/draw.c
index 46ed663..048fa85 100644
--- a/filebrowser/draw.c
+++ b/filebrowser/draw.c
@@ -25,8 +25,8 @@
  */
 
 #include <stdio.h>
-#include "selfile.h"
 #include "xstat.h"
+#include "selfile.h"
 #include <X11/StringDefs.h>
 #include <X11/Xaw/Scrollbar.h>
 #include <X11/Xaw/Cardinals.h>
@@ -38,11 +38,6 @@
 #endif
 #define ABS(x) (((x) < 0) ? (-(x)) : (x))
 
-/* added missing prototypes */
-extern char SFstatChar(struct stat*);
-extern int SFchdir(char *);
-void SFvSliderMovedCallback(Widget, int, int);
-
 typedef struct {
 	char *fontname;
 } TextData, *textPtr;
@@ -655,7 +650,10 @@ SFvSliderMovedCallback(w, n, new)
 
 	dir = &(SFdirs[SFdirPtr + n]);
 
+
 	old = dir->vOrigin;
+	if(new == -1) new = old + 1; else if(new == -2) new = old - 1; // [HGM] indicates scroll direction on mousewheel event
+	if(new < 0 || new > dir->nEntries - SFlistSize) return;
 	dir->vOrigin = new;
 
 	if (old == new) {