[PATCH] user32: Add tests showing that MapWindowPoints, ClientToScreen and ScreenToClient never fail.

[Christian Costa]

Le 16/10/2012 21:31, Rico Schüller a écrit :
> On 16.10.2012 20:21, Henri Verbeet wrote:
>> On 16 October 2012 20:12, Christian Costa <titan.costa at gmail.com> wrote:
>>> +    //SetWindowPos(wnd, NULL, 0, 0, rect.right / 2, rect.bottom / 
>>> 2, 0);
>> C99 comment.
>>
>> I don't think these are very interesting cases though, it's probably
>> more interesting what happens with e.g. a destroyed window, or a
>> fullscreen window.
>>
>>
>>
>
> The interesting cases are likely:
>     ret = ScreenToClient(NULL, NULL);
>     ok(ret == FALSE, "Failed\n");
>
>     /* invalid handle */
>     ret = ScreenToClient(0xdeadbeef, &p);
>     ok(ret == FALSE, "Failed\n");
>
>     p.x = p.y = 100;
>     ret = ScreenToClient(NULL, &p);
>     ok(ret == FALSE, "Failed\n");
>     ok(p.x == 100 && p.y == 100, "Failed\n");
>
>     p.x = p.y = 0;
>     ret = ScreenToClient(NULL, &p);
>     ok(ret == FALSE, "Failed\n");
>     ok(p.x == 0 && p.y == 0, "Failed\n");
>
>     /* create test window */
>     wnd = CreateWindow("static", "test", 100, 200, 150, 150, 0, NULL, 
> NULL, NULL, NULL);
>
>     ret = ScreenToClient(wnd, NULL);
>     ok(ret == FALSE, "Failed\n");
>
>     wnd = CreateWindowA("static", NULL, 0, 0, 0, rect.right / 2, 
> rect.bottom / 2, 0, 0, 0, 0);
>     p.x = p.y = 0;
>     ret = ScreenToClient(wnd, &p);
>     ok(...);
>     ok(...);
>
>
> And the implementation:
> BOOL WINAPI ScreenToClient( HWND hwnd, LPPOINT lppnt )
> {
>     /* !hwnd is redundant, but faster, MapWindowPoints(0, 0, ...) will 
> return 0 */
>     if (!hwnd || !lppnt) return FALSE;
>     return MapWindowPoints( 0, hwnd, lppnt, 1 ) != 0;
> }
>
> If I remember correctly, the game passes some NULL hwnd and invalid 
> hwnd in.
>
> Cheers
> Rico
>
>
>
Thanks. I will update the tests. Anyway I don't know how MapWindowPoint 
could fail altough MSDN says to SetLastError before and check last error 
to see if it failed.