MAX.XAM

Is there a way to unload a MIDI Driver after it has been selected via a umenu? In the attached patcher - If I select a MIDI device, then select 'None' from the umenu, the last selected MIDI device is still active. I would like to have the MIDI driver unloaded after selecting 'None'

message

button

loadbang

umenu

midiinfo

attrui

Is there a way to unload a MIDI Driver after it has been selected via a umenu? In the attached patcher -  If I select a MIDI device, then select 'None' from the umenu, the last selected MIDI device is still active. I would like to have the MIDI driver unloaded after selecting 'None'

Hey all,
Is there a way to unload a MIDI Driver after it has been selected via a umenu? In the attached patcher -  If I select a MIDI device

unloading-a-midi-driver

Disable midi objects, like notein ctlin etc that were set to that midi device.

My workaround is having an unused MIDI port (the one on my audio interface that has never had a cable connected to it) called "off".

The patch posted had mistake inside,
all devices appeared twice in menu.

Oh, another undocumented feature. Nice to know! Thanks Mr Audio. :-)

Source to the rescue (again). Thanks, it works great! Someone document these features, please!

Source to the rescue (again). Thanks, it works great!  Someone document these features, please!  

The patch from Source works great when manually selecting 'None' in the umenu. If I unplug the midi device, and re-plug it back in, then the midi device is still active even though None is selected in the umenu. I want None to be selected after unplugging a midi device, that is why I have "Update input device list" as a attribute for the midiinfo object. That part is expected behavior. After unplugging the device, umenu still sends a 2 instead of a 0 when None is auto-selected. What is the trick to have it send a 0 after unplugging a device?

The patch from Source works great when manually selecting 'None' in the umenu.  If I unplug the midi device, and re-plug it back in, then the midi device is still active even though None is selected in the umenu.  I want None to be selected after unplugging a midi device, that is why I have "Update input device list" as a attribute for the midiinfo object.  That part is expected behavior. After unplugging the device, umenu still sends a 2 instead of a 0 when None is auto-selected.  What is the trick to have it send a 0 after unplugging a device?

I am not using max 8, and autopollcontrollers is

But I guess that it just makes same as if one updates midiinfo

Store last selected Midi Device symbol somewhere,

When midiinfo outputs it's list , trigger delayed bang

because that is needed to recall items by symbol.

So again, if last selected midi device is in the list,

umenu would output it, and also should bang stop message to delay

that would otherwise trigger symbol None...

I am not using max 8, and autopollcontrollers is
not in the older max versions.
But I guess that it just makes same as if one updates midiinfo
manually.
I would do the following :
Store last selected Midi Device symbol somewhere,
in value, message or whatever.
When midiinfo outputs it's list , trigger delayed bang
to recall that symbol in the umenu.
If it gets found all is fine.
If not, select None from the menu.
Just prepend symbol $1 to the umenu,
because that is needed to recall items by symbol.
So again, if last selected midi device is in the list,
umenu would output it, and also should bang stop message to delay
that would otherwise trigger symbol None...


Thanks Source! I happened to stumble upon a very easy fix (and it works!). Hopefully this could be of help to someone else. Added a button and a number object (at 0) going from midinfo to the umenu. This will select the first item in the umenu (None) when MIDI device is unplugged from the computer. "Unloading" the MIDI driver.

Thanks Source! I happened to stumble upon a very easy fix (and it works!). Hopefully this could be of help to someone else. Added a button and a number object (at 0) going from midinfo to the umenu. This will select the first item in the umenu (None) when MIDI device is unplugged from the computer.  "Unloading" the MIDI driver.


I think it is better to check if selected device has been removed.

Let's say You use keyboard for midi input, and it is still connected

but some other device, like midi pedal gets disconnected.

Than Your midi keyboard will be disabled.

Also, if a midi input object receives no port message,

To prevent this, one would disable it with loadbang,

and activate only when it gets port message.

Here is a patch with selected device check on midiinfo refresh.

Even if it might work as You expected,
I think it is better to check if selected device has been removed.
Let's say You use keyboard for midi input, and it is still connected
but some other device, like midi pedal gets disconnected.
Than Your midi keyboard will be disabled.
Also, if a midi input object receives no port message,
it will respond to all controllers.
To prevent this, one would disable it with loadbang,
and activate only when it gets port message.
Here is a patch with selected device check on midiinfo refresh.


While I have not had an issue with my "fix", I do think your approach is better. Thanks again Source!

How do I unload a MIDI driver?