[BUG] session.CreateEndpointConnection(); does not return nullptr when called with invalid EndpointID

[MusicMaker]

Description

auto receiveEndpoint = session.CreateEndpointConnection(); does not return nullptr when called with invalid EndpointID

To Reproduce

call auto receiveEndpoint = session.CreateEndpointConnection(); with an invalid EndpointID

Expected behavior

nullptr returned

Screenshots

N/A

Installer Name or Version

DP6

Desktop (please complete the following information):

Win 11 Insider Pro Canary

Device information, if this is with an external MIDI device:

N/A

Application Information

C++/WinRT based on SDK sample code.

[Psychlist1972]

This is a good point. Right now, the id is only verified once you call Open() because that's when the service call is made.

I can add a check for a valid endpoint id, but it's always possible that the endpoint becomes unavailable (usb cable unplugged, etc.) between the create and open, so the return value (boolean) from Open always needs to be checked.

The reason this is a two-step process is you need to be able to set up event handlers and processing objects/listeners before opening the connection.

[Psychlist1972]

Fixed in upcoming DP8. The code now checks to see if the endpoint id is a valid Windows MIDI Services id, and then checks to see if the endpoint interface has been activated. Returns nullptr if fails either check.

Note that you can still disconnect a device between endpoint connection creation and opening. In that case, you will get a failure when you try to open it.