#include using namespace Upp; struct App : TopWindow { Thread work; void Work(); ArrayCtrl list; typedef App CLASSNAME; App(); ~App(); }; void App::Work() { for(;;) { Sleep(1); GuiLock __; if(IsShutdownThreads()) break; if(list.GetCount() > 100) { if(PromptYesNo("Quit?")) { Break(); return; } list.Clear(); } list.Add((int64)Random()); } } App::App() { list.AddColumn("Test"); Add(list.SizePos()); work.Run(THISBACK(Work)); } App::~App() { ShutdownThreads(); } GUI_APP_MAIN { App app; app.Run(); }