[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.