Unplugging a Monitor Creates Error (API)


(Juli Gregg) #1

We are using FMOD Studio API in our game for school and when you unplug a monitor it creates this error when running FMOD’s Update function:

“A Win32 COM related error occurred. COM failed to initialize or a QueryInterface failed meaning a Windows codec or driver was not installed properly.”

Currently my only guess is switching a sound source creates this issue. For example if using an HDMI cord and unplugging it would then cause the source to switch. However, when testing with a VGA cord this doesn’t happen.

Any ideas on how to fix this or possibly detect when a source switches and handle it accordingly.

Thanks in advance.

Using FMOD Studio Version 1.05.04


(Nicholas Wilcox) #2

What version of FMOD Studio are you using?


(Juli Gregg) #3

FMOD Studio 1.05.04


(Nicholas Wilcox) #4

Sorry, I meant to ask which version of the API are you using?


(Juli Gregg) #5

FMOD Studio API for C++ downloaded with the same version we are using for FMOD Studio so 1.05.04. (I’m not using Low Level of fsbank if that’s what you mean?


(Nicholas Wilcox) #6

That error message corresponds to FMOD_ERR_COM, which was removed in 1.05.00. Can you make sure all the libs, DLLs and headers are from the 1.05.04.


(Juli Gregg) #7

That fixed it. I guess we were updating FMOD Studio but hadn’t been updating the API as well. Thanks.


(Deepak Chennakkadan) #8

Try messing around with sytem->getRecordNumDrivers, getDriver, getDriverInfo.

I use getRecordNumDrivers to detect the number of recording devices plugged in.


(Nicholas Wilcox) #9

This sounds like a bug we fixed back in 1.04.08.