[pyusb-users] Finally found: the installed library

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<div>Hi,</div>

<div>The use of the pyusb0 service is a bit troublesome, because you have to specify the desired library by hand.<br/>
I always had the dream of automatically use the installed library.</div>

<div>Well, here is how.</div>

<div>You must know the Vid and Pid of your device. With that you can look up the registry for the installed service.<br/>
If it is winusb you need not care.</div>

<div>If it is pyusb0 then you get the device descriptor and extract the device name.<br/>
With it you go to the driverstore and scan the filerepository directory for a directory file name &nbsp;<br/>
that starts with the device name.</div>

<div>Then you walk under this tree until you find a dll name.</div>

<div>This is the installed library.</div>

<div>Was not so hard.</div>

<div>I want to thank Xiaofan for his encouraging advice to dig deeper in this registry thingens.</div>

<div>Now there is no more any need to pick a wrong library.</div>

<div>&nbsp;</div>

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