Method SetDisplayedPlane

src/widget.cpp:1450–1457

* Select which plane to show (for #NWID_SELECTION only). * @param plane Plane number to display. * @return true iff the shown plane changed. */

 * @return true iff the shown plane changed.
 */
bool NWidgetStacked::SetDisplayedPlane(int plane)
{
	if (this->shown_plane == plane) return false;
	this->shown_plane = plane;
	/* In case widget IDs are repeated, make sure Window::GetWidget works on displayed widgets. */
	if (static_cast<size_t>(this->shown_plane) < this->children.size()) this->children[shown_plane]->FillWidgetLookup(*this->widget_lookup);
	return true;
}

class NWidgetLayer : public NWidgetContainer {
public: