Initial data commit

Task/Simple-windowed-application/Modula-3/simple-windowed-application.mod3

@@ -0,0 +1,20 @@
+MODULE Click EXPORTS Main;
+
+IMPORT Fmt, TextVBT, ButtonVBT, VBT, Axis, HVSplit, TrestleComm, Trestle;
+
+VAR label := TextVBT.New("There have been no clicks yet.");
+    button := ButtonVBT.New(TextVBT.New("Click me!"), Clicked);
+    main := HVSplit.Cons(Axis.T.Ver, label, button, adjustable := FALSE);
+    count := 0;
+
+PROCEDURE Clicked(<*UNUSED*>button: ButtonVBT.T; <*UNUSED*>READONLY cd: VBT.MouseRec) =
+  BEGIN
+    INC(count);
+    TextVBT.Put(label, "Button pressed: " & Fmt.Int(count));
+  END Clicked;
+
+<*FATAL TrestleComm.Failure*>
+BEGIN
+  Trestle.Install(main);
+  Trestle.AwaitDelete(main);
+END Click.