Question about stream class property set

NTDEV
1

Dear all,

Do you know where can I find sample to access standard property
(videoprocamp, cameracontrol…) from user mode?

I know how to define customize property set in minidriver.
I also know how to access these properties from user mode.

For customized property we can write
hr = gcap.pVCap->QueryInterface(IID_IKsPropertySet,(void **)&pPS);
hr = pPS->Get(STATIC_PROPSETID_LVCAM, PID_VENDOR_ID,
&Data,sizeof(KSPROPERTY_CUSTOM_PROP_S),
&Data,sizeof(KSPROPERTY_CUSTOM_PROP_S), &nLength);

Do you know how to access videoprocamp property from user mode?

Regards,
Paul May

2

> Do you know how to access videoprocamp property from user mode?

By using COM property pages mechanism described in ActiveX Controls
documentation.

Max

3

Hi Maxim,

Thanks for your reply.
In fact, what I like to do is access specified property
through codes instead of showing the property page.

All suggestion is welcomed.

Regards,
Paul May

4

> In fact, what I like to do is access specified property

through codes instead of showing the property page.

One of the IOCTLs can be used for it. See KS documentation.
Also I think you will be able to do this by user-mode DirectShow COM
interfaces.

Max