Can't create a signal with a pointer to a parameter other than a "void *"

[bookface]

Maybe I'm doing something wrong, but creating a signal with a pointer parameter other than a "void *" causes an error in wobjectimpl.h.

void func(QOpenGLTexture *ptr) W_SIGNAL(func,ptr); fails.

But
void func(void *ptr) W_SIGNAL(func,ptr)
is fine (of course, it's necessary to cast the ptr when calling emit and connect()).

Is this a limitation?

[gillesfernandez]

It should be possible to register custom parameters.

Did you register the arg type? See: https://github.com/woboq/verdigris/blob/master/tutorial/tutorial.cpp lines

Otherwise, could you share the error you are getting?

[bookface]

I totally missed the requirement for W_REGISTER_ARGTYPE(). Without it wobjectimp.h spews out a ton of error messages. Compiles now, Thanks!

…

On Mon, Apr 20, 2026 at 6:49 AM Gilles Fernandez ***@***.***> wrote: *gillesfernandez* left a comment (woboq/verdigris#106) <#106 (comment)> It should be possible to register custom parameters. Did you register the arg type? See: https://github.com/woboq/verdigris/blob/master/tutorial/tutorial.cpp lines <https://github.com/woboq/verdigris/blob/8abfb8d69c689e2c607225c98baa829f839686f9/tutorial/tutorial.cpp#L281> Otherwise, could you share the error you are getting? — Reply to this email directly, view it on GitHub <#106?email_source=notifications&email_token=AAFGWFTC6YEIPQU7TWRMKTL4WYMD5A5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTIMRYGA4DOMRXHE3KM4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#issuecomment-4280872796>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAFGWFQ7QA6YUQBCZMHLDQD4WYMD5AVCNFSM6AAAAACX7RJ2NGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DEOBQHA3TENZZGY> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[gillesfernandez]

It's easy to miss ;)
The error message should tell you about that, but it's lost in a lot of template errors noise...