Some lists were not auto reading results. Hopefully fixed.

tests/listbox_fixture.c

@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+#include <windows.h>
+
+static HWND list, button;
+static int step;
+
+static LRESULT CALLBACK window_proc(HWND window, UINT message, WPARAM wp, LPARAM lp) {
+  if (message == WM_TIMER) {
+    switch (++step) {
+    case 1: case 2: SendMessageW(list, WM_KEYDOWN, VK_DOWN, 1); break;
+    case 3: SendMessageW(list, WM_KEYDOWN, VK_UP, 1); break;
+    case 4: SetFocus(button); break;
+    case 5:
+      // A background change must not be announced or steal focus.
+      SendMessageW(list, LB_INSERTSTRING, 0, (LPARAM)L"Background-only map");
+      SendMessageW(list, LB_SETCURSEL, 0, 0);
+      NotifyWinEvent(EVENT_OBJECT_VALUECHANGE, list, OBJID_CLIENT, CHILDID_SELF);
+      break;
+    case 6:
+      if (GetFocus() != button) return 0;
+      SendMessageW(list, LB_DELETESTRING, 0, 0);
+      SendMessageW(list, LB_SETCURSEL, 0, 0);
+      SetFocus(list);
+      break;
+    case 7: SendMessageW(list, LB_RESETCONTENT, 0, 0); break;
+    default: DestroyWindow(window);
+    }
+    return 0;
+  }
+  if (message == WM_DESTROY) { PostQuitMessage(0); return 0; }
+  return DefWindowProcW(window, message, wp, lp);
+}
+
+int WINAPI WinMain(HINSTANCE instance, HINSTANCE previous, LPSTR args, int show) {
+  (void)previous; (void)args; (void)show;
+  WNDCLASSW cls = {0};
+  cls.hInstance = instance;
+  cls.lpszClassName = L"WineAccessListBoxFixture";
+  cls.lpfnWndProc = window_proc;
+  RegisterClassW(&cls);
+  HWND window = CreateWindowW(cls.lpszClassName, L"Select map", WS_OVERLAPPEDWINDOW,
+                               120, 120, 600, 300, NULL, NULL, instance, NULL);
+  CreateWindowW(L"Static", L"Tutorial maps", WS_CHILD | WS_VISIBLE,
+                  10, 10, 550, 30, window, NULL, instance, NULL);
+  list = CreateWindowW(L"ListBox", L"", WS_CHILD | WS_VISIBLE | WS_TABSTOP | LBS_NOTIFY,
+                        10, 50, 550, 160, window, NULL, instance, NULL);
+  button = CreateWindowW(L"Button", L"OK", WS_CHILD | WS_VISIBLE | WS_TABSTOP,
+                          10, 220, 100, 30, window, NULL, instance, NULL);
+  SendMessageW(list, LB_ADDSTRING, 0, (LPARAM)L"First map");
+  SendMessageW(list, LB_ADDSTRING, 0, (LPARAM)L"Second map β");
+  SendMessageW(list, LB_ADDSTRING, 0, (LPARAM)L"Third map");
+  SendMessageW(list, LB_SETCURSEL, 0, 0);
+  ShowWindow(window, SW_SHOW);
+  SetForegroundWindow(window);
+  SetFocus(list);
+  SetTimer(window, 1, 500, NULL);
+  MSG message;
+  while (GetMessageW(&message, NULL, 0, 0) > 0) {
+    TranslateMessage(&message); DispatchMessageW(&message);
+  }
+  return 0;
+}