(WinAPI) FindWindowW always fails

[Bastiaan Veelo]

On Thursday, 8 October 2020 at 19:39:05 UTC, Deen O'Connor wrote:
>     HWND hWnd = FindWindowW(null, cast(wchar*)&wndName);
...
> So, am i doing something wrong, or is this a bug?

You are taking the address of a slice and pass it as if it were a 
C string. You can use toUtf16z for a conversion, but do note the 
limitations of toUtfz.

-Bastiaan

PS this is more a subject for the Learn forum.