user32/tests: Add cross-process WindowFromPoint tests.

dlls/user32/tests/win.c

@@ -103,6 +103,22 @@ static void flush_events( BOOL remove_messages )
     }
 }
 
+static BOOL wait_for_event(HANDLE event, int timeout)
+{
+    DWORD end_time = GetTickCount() + timeout;
+    MSG msg;
+
+    do {
+        if(MsgWaitForMultipleObjects(1, &event, FALSE, timeout, QS_ALLINPUT) == WAIT_OBJECT_0)
+            return TRUE;
+        while(PeekMessageA(&msg, 0, 0, 0, PM_REMOVE))
+            DispatchMessageA(&msg);
+        timeout = end_time - GetTickCount();
+    }while(timeout > 0);
+
+    return FALSE;
+}
+
 /* check the values returned by the various parent/owner functions on a given window */
 static void check_parents( HWND hwnd, HWND ga_parent, HWND gwl_parent, HWND get_parent,
                            HWND gw_owner, HWND ga_root, HWND ga_root_owner )
@@ -7200,10 +7216,49 @@ todo_wine
     ok(ret, "UnregisterClass(my_window) failed\n");
 }
 
-static void test_window_from_point(void)
+static void window_from_point_proc(HWND parent)
+{
+    HANDLE start_event, end_event;
+    HANDLE win, child_static, child_button;
+    DWORD ret;
+    POINT pt;
+
+    start_event = OpenEventA(EVENT_ALL_ACCESS, FALSE, "test_wfp_start");
+    ok(start_event != 0, "OpenEvent failed\n");
+    end_event = OpenEventA(EVENT_ALL_ACCESS, FALSE, "test_wfp_end");
+    ok(end_event != 0, "OpenEvent failed\n");
+
+    child_static = CreateWindowExA(0, "static", "static", WS_CHILD | WS_VISIBLE,
+            0, 0, 100, 100, parent, 0, NULL, NULL);
+    ok(child_static != 0, "CreateWindowEx failed\n");
+    pt.x = pt.y = 150;
+    win = WindowFromPoint(pt);
+    ok(win == parent, "WindowFromPoint returned %p, expected %p\n", win, parent);
+
+    child_button = CreateWindowExA(0, "button", "button", WS_CHILD | WS_VISIBLE,
+            100, 0, 100, 100, parent, 0, NULL, NULL);
+    ok(child_button != 0, "CreateWindowEx failed\n");
+    pt.x = 250;
+    win = WindowFromPoint(pt);
+    ok(win == child_button, "WindowFromPoint returned %p, expected %p\n", win, child_button);
+
+    SetEvent(start_event);
+
+    ret = WaitForSingleObject(end_event, 5000);
+    ok(ret == WAIT_OBJECT_0, "WaitForSingleObject returned %x\n", ret);
+
+    CloseHandle(start_event);
+    CloseHandle(end_event);
+}
+
+static void test_window_from_point(const char *argv0)
 {
     HWND hwnd, child, win;
     POINT pt;
+    PROCESS_INFORMATION info;
+    STARTUPINFOA startup;
+    char cmd[MAX_PATH];
+    HANDLE start_event, end_event;
 
     hwnd = CreateWindowExA(0, "MainWindowClass", NULL, WS_POPUP | WS_VISIBLE,
             100, 100, 200, 100, 0, 0, NULL, NULL);
@@ -7235,6 +7290,34 @@ static void test_window_from_point(void)
     ok(win == child, "WindowFromPoint returned %p, expected %p\n", win, child);
     DestroyWindow(child);
 
+    start_event = CreateEventA(NULL, FALSE, FALSE, "test_wfp_start");
+    ok(start_event != 0, "CreateEvent failed\n");
+    end_event = CreateEventA(NULL, FALSE, FALSE, "test_wfp_end");
+    ok(start_event != 0, "CreateEvent failed\n");
+
+    sprintf(cmd, "%s win create_children %p\n", argv0, hwnd);
+    memset(&startup, 0, sizeof(startup));
+    startup.cb = sizeof(startup);
+    ok(CreateProcessA(NULL, cmd, NULL, NULL, FALSE, 0, NULL, NULL,
+                &startup, &info), "CreateProcess failed.\n");
+    ok(wait_for_event(start_event, 1000), "didn't get start_event\n");
+
+    child = GetWindow(hwnd, GW_CHILD);
+    win = WindowFromPoint(pt);
+    ok(win == child, "WindowFromPoint returned %p, expected %p\n", win, child);
+
+    child = GetWindow(child, GW_HWNDNEXT);
+    pt.x = 250;
+    win = WindowFromPoint(pt);
+    ok(win == child, "WindowFromPoint returned %p, expected %p\n", win, child);
+
+    SetEvent(end_event);
+    winetest_wait_child_process(info.hProcess);
+    CloseHandle(start_event);
+    CloseHandle(end_event);
+    CloseHandle(info.hProcess);
+    CloseHandle(info.hThread);
+
     DestroyWindow(hwnd);
 }
 
@@ -7713,6 +7796,8 @@ static void test_smresult(void)
 
 START_TEST(win)
 {
+    char **argv;
+    int argc = winetest_get_mainargs( &argv );
     HMODULE user32 = GetModuleHandleA( "user32.dll" );
     HMODULE gdi32 = GetModuleHandleA("gdi32.dll");
     pGetAncestor = (void *)GetProcAddress( user32, "GetAncestor" );
@@ -7733,6 +7818,15 @@ START_TEST(win)
     pSetLayout = (void *)GetProcAddress( gdi32, "SetLayout" );
     pMirrorRgn = (void *)GetProcAddress( gdi32, "MirrorRgn" );
 
+    if (argc==4 && !strcmp(argv[2], "create_children"))
+    {
+        HWND hwnd;
+
+        sscanf(argv[3], "%p", &hwnd);
+        window_from_point_proc(hwnd);
+        return;
+    }
+
     if (!RegisterWindowClasses()) assert(0);
 
     hwndMain = CreateWindowExA(/*WS_EX_TOOLWINDOW*/ 0, "MainWindowClass", "Main window",
@@ -7783,7 +7877,7 @@ START_TEST(win)
 
     /* Add the tests below this line */
     test_child_window_from_point();
-    test_window_from_point();
+    test_window_from_point(argv[0]);
     test_thick_child_size(hwndMain);
     test_fullscreen();
     test_hwnd_message();