Detect FireWire Connection

Posted on 2005-03-21
Medium Priority
Last Modified: 2013-12-03
Hi Experts,

How do i programmatically detect when a camera is connected through the firewire (IEEE1394) cable ??

I'm trying to use SHChangeNotifyRegister, but i am not sure that this is the way to go.

This is to use with MFC, but it could be any language.

Thank you in advance.

Question by:PeterLarsen
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Accepted Solution

AlexFM earned 750 total points
ID: 13598554
I have some code which does this. Since this code is not mine, I can give you only general direction and not actual code. I hope this will help you to find additional information.
You need to handle WM_DEVICECHANGE windows message. If wParam is DBT_DEVICEARRIVAL, cast lParam to PDEV_BROADCAST_HDR and test it's dbch_devicetype member. If it is equal to DBT_DEVTYP_DEVICEINTERFACE (don't ask me what is this, I don't know), handle this case.
To get WM_DEVICECHANGE message you need RegisterDeviceNotification function.

Author Comment

ID: 13598894
Ahh, I actually have some code from delphi-jedi.
Thanks for putting me on the right track. It seems right, and the points are probably yours.
I'll get back later today.

Author Comment

ID: 13605818
I have found that some computers don't receive DBT_DEVICEARRIVAL upon connection - don't know why.
Anyway, thanks for your help.

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