#include class TestWindow : public TopWindow { typedef TestWindow CLASSNAME; MapView View; public: TestWindow() { Sizeable().MinimizeBox().MaximizeBox(); Add(View.SizePos()); View.LoadMap(AppendFileName(AppendFileName(GetFileDirectory(GetExeFilePath()), "Mipmaps"), "marcos.map")); View.HighQuality(false); View.ShowSearch(); // here link to callback PolygonItem::WhenClick = THISBACK(OnRoomClick); } // your method or function to react on clicks void OnRoomClick(Ptr room) { Point p = GetRect().TopLeft() + ViewToScene(~room, room->GetCenter()); TopWindow popup; popup.NoCenter(); popup.SetRect(Rect(p, Size(150, 50))); Label text; popup.Add(text.SizePos()); text = "Name: " + room->GetName(); popup.Execute(); } }; GUI_APP_MAIN { TestWindow().Run(); }