Access second display

Hello,

in
http://developer.toradex.com/knowledge-base/display-driver-registry-settings#Settings_for_iMX6_Modules_Only
you say that the second display can be accessed via GDI functions.
How can I get a handle to the second display ?

In CreateDC (Compact 2013) | Microsoft Docs I could not detect how to do this.

Any ideas ?
Thank you !

@Frax222,

We have updated our documentation today. Please refer here : http://developer.toradex.com/knowledge-base/display-driver-registry-settings#Settings_for_iMX6_Modules_Only