diff options
| -rw-r--r-- | generic/tkListbox.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/generic/tkListbox.c b/generic/tkListbox.c index 9ff9d23..e29c637 100644 --- a/generic/tkListbox.c +++ b/generic/tkListbox.c @@ -3630,7 +3630,8 @@ MigrateHashEntries( * * GetMaxOffset -- * - * Passing in a listbox pointer, returns the maximum offset for the box. + * Passing in a listbox pointer, returns the maximum offset for the box, + * i.e. the maximum possible horizontal scrolling value (in pixels). * * Results: * Listbox's maxOffset. @@ -3649,6 +3650,11 @@ static int GetMaxOffset( (Tk_Width(listPtr->tkwin) - 2*listPtr->inset - 2*listPtr->selBorderWidth) + listPtr->xScrollUnit - 1; if (maxOffset < 0) { + + /* + * Listbox is larger in width than its largest width item. + */ + maxOffset = 0; } maxOffset -= maxOffset % listPtr->xScrollUnit; |