XPLMGetAvionicsHandle
XPLM_API XPLMAvionicsID XPLMGetAvionicsHandle(
XPLMDeviceID inDeviceID);
This routine registers no callbacks for a built-in cockpit device, but returns a handle which allows you to interact with it using the Avionics Device API. Use this if you do not wish to intercept drawing, clicks and touchscreen calls to a device, but want to interact with its popup programmatically. This is equivalent to calling XPLMRegisterAvionicsCallbackEx() with NULL for all callbacks.