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(svn r18593) -Fix: GetWidget call case similar to r18591

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rubidium 2009-12-21 18:20:18 +00:00
parent 38ceeb41b7
commit 50734030aa
1 changed files with 5 additions and 1 deletions
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6
src/widget.cpp
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@ -2090,7 +2090,11 @@ Scrollbar *NWidgetLeaf::FindScrollbar(Window *w, bool allow_next) const
if (this->type == WWT_SCROLL2BAR) return &w->vscroll2;
if (this->index >= 0 && allow_next && (uint)(this->index) + 1 < w->nested_array_size) {
const NWidgetCore *next_wid = w->GetWidget<NWidgetCore>(this->index + 1);
/* GetWidget ensures that the widget is of the given type.
* As we might have cases where the next widget in the array
* is a non-Core widget (e.g. NWID_SELECTION) we first get
* the base class and then dynamic_cast that. */
const NWidgetCore *next_wid = dynamic_cast<NWidgetCore*>(w->GetWidget<NWidgetBase>(this->index + 1));
if (next_wid != NULL) return next_wid->FindScrollbar(w, false);
}
return NULL;