user32: Add test to check the MDI child switching

[Dmitry Timoshkov]

"Ilya Shpigor" <shpigor at etersoft.ru> wrote:

> --- a/dlls/user32/tests/win.c
> +++ b/dlls/user32/tests/win.c
> @@ -1674,9 +1674,78 @@ static BOOL mdi_RegisterWindowClasses(void)
>      cls.lpszClassName = "MDI_child_Class_2";
>      if(!RegisterClassA(&cls)) return FALSE;
>  
> +    cls.lpfnWndProc = DefWindowProcW;
> +    cls.lpszClassName = "MDI_parent_Class_def";
> +    if(!RegisterClassA(&cls)) return FALSE;
> +
> +    cls.lpfnWndProc = DefMDIChildProcW;
> +    cls.lpszClassName = "MDI_child_Class_def";
> +    if(!RegisterClassA(&cls)) return FALSE;

The above A/W mishmash can't work.

> +HWND CreateNewMDIChild(HWND hMDIClient)
> +{
> +    HWND hChild;
> +
> +    hChild=CreateMDIWindow("MDI_child_Class_def", "MDI child", WS_CHILD | WS_VISIBLE,
> +        CW_USEDEFAULT,
> +        CW_USEDEFAULT,
> +        CW_USEDEFAULT,
> +        CW_USEDEFAULT,
> +        hMDIClient,
> +        GetModuleHandle(NULL), 0);
> +
> +    if(!hChild)
> +    {
> +        ok(0,"MDI child creation failed\n");
> +    }

It's better to not use ok(0) statements, and do the actual check inside
of ok(), in this case ok(hChild != 0).

> +    active = (HWND)SendMessageW(mdi_client, WM_MDIGETACTIVE, 0, 0);
> +    SendMessageW(mdi_client, WM_MDINEXT, 0, 0);
> +    SendMessageW(mdi_client, WM_MDINEXT, 0, 0);
> +    ok(active != (HWND)SendMessageW(mdi_client, WM_MDIGETACTIVE, 0, 0), "MDI child switching error\n");

Wouldn't it be much easier to just add 4 lines above into existing tests?

-- 
Dmitry.