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diff -ruN newt-0.52.2-old/checkboxtree.c newt-0.52.2/checkboxtree.c
--- newt-0.52.2-old/checkboxtree.c 2006-01-19 21:37:14.000000000 +0000
+++ newt-0.52.2/checkboxtree.c 2006-01-19 21:37:29.000000000 +0000
@@ -537,6 +537,18 @@
free(co);
}
+static void ctEnsureLimits( struct CheckboxTree *ct ) {
+ struct items **listEnd = ct->flatList + ct->flatCount - 1;
+ if (ct->firstItem < ct->flatList)
+ ct->firstItem = ct->flatList;
+ if (ct->currItem < ct->flatList)
+ ct->currItem = ct->flatList;
+ if (ct->firstItem > listEnd) {
+ ct->firstItem = listEnd;
+ ct->currItem = listEnd;
+ }
+}
+
struct eventResult ctEvent(newtComponent co, struct event ev) {
struct CheckboxTree * ct = co->data;
struct eventResult er;
@@ -648,6 +660,7 @@
ct->currItem -= co->height;
ct->firstItem -= co->height;
}
+ ctEnsureLimits( ct );
ctDraw(co);
if(co->callback) co->callback(co, co->callbackData);
@@ -664,6 +677,7 @@
ct->currItem += co->height;
ct->firstItem += co->height;
}
+ ctEnsureLimits( ct );
ctDraw(co);
if(co->callback) co->callback(co, co->callbackData);
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