Which way can let QTP recogniza vc custom controls?

[richard2013]

Hello,

I have a big problem that is the QTP can't detect any controls in my project, but can find controls parent as winobject.
All controls in my project are drawed by ourself, some inhert from windows common controls.
If i want to use QTP record and replay our all controls, what can be do?
Such as make an add-in or add-in extern or other else ?

I had search for some days, i have no idea.

Is there anyone can help me?

Thanks.