X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=filebrowser%2Fdraw.c;h=abab957979d3c642164ace9e0ef43a5bd4557dc8;hb=e9a0808a5551217eb4fd29d949f3c7672545c168;hp=b21d1700fe5ab6fe5899226b3adf3a2466748897;hpb=b4c2ef53cf5a608a9488ed5cf53da908e9553d21;p=xboard.git

diff --git a/filebrowser/draw.c b/filebrowser/draw.c
index b21d170..abab957 100644
--- a/filebrowser/draw.c
+++ b/filebrowser/draw.c
@@ -505,7 +505,7 @@ SFscrollTimer(p, id)
 	int	save;
 	int     n;
 
-        n = (int) p;
+        n = (int)(intptr_t) p;
 
 	dir = &(SFdirs[SFdirPtr + n]);
 	save = dir->vOrigin;
@@ -535,7 +535,7 @@ SFscrollTimer(p, id)
 
 	if (SFbuttonPressed) {
 		SFscrollTimerId = XtAppAddTimeOut(SFapp,
-			SFscrollTimerInterval(), SFscrollTimer, (XtPointer) n);
+			SFscrollTimerInterval(), SFscrollTimer, (XtPointer)(intptr_t) n);
 	}
 }
 
@@ -576,7 +576,7 @@ SFnewInvertEntry(n, event)
 				SFscrollTimerAdded = 1;
 				SFscrollTimerId = XtAppAddTimeOut(SFapp,
 					SFscrollTimerInterval(), SFscrollTimer,
-					(XtPointer) n);
+					(XtPointer)(intptr_t) n);
 			}
 		}
 
@@ -655,7 +655,10 @@ 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) {