[PATCH] twain_32: Fix crash by call TWAIN_UserSelect twice.

[Jactry Zeng]

Hi,

On 6/1/21 9:22 PM, Jiajin Cui wrote:
> twain_autodetect();
>
> +    if (!IsWindow(parent))
> +        parent = *(HWND*)DSM_parent;
> +

If this is true, you would need to remove the following check.
And I think attaching some tests to verify it won't hurt.
> if (!IsWindow(parent))
>          parent = NULL;

[Jactry Zeng]

On 6/1/21 10:27 PM, Jactry Zeng wrote:
> On 6/1/21 9:22 PM, Jiajin Cui wrote:
> > twain_autodetect();
> >
> > +    if (!IsWindow(parent))
> > +        parent = *(HWND*)DSM_parent;
> > +
>
> If this is true, you would need to remove the following check.
> Sorry, please ignore this comment.
> And I think attaching some tests to verify it won't hurt.