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USBIO Driver for Windows CE - Thesycon Systemsoftware ...

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3 Programming Interface<br />

CUsbIo::GetParentID<br />

Returns a string that is unique <strong>for</strong> the parent hub.<br />

Definition<br />

const TCHAR*<br />

GetParentID();<br />

Return Value<br />

Returns a pointer to a unique string to identify the parent hub. returns NULL if some thing<br />

goes wrong.<br />

Comments<br />

This function retrieves parent hub identifier. The ID is available after a device enumeration has<br />

been per<strong>for</strong>med by a call to CUsbIo::CreateDeviceList and<br />

CUsbIo::GetDeviceInstanceDetails or CUsbIo::Open has been called.<br />

Two devices instances that return the same parent ID are connected to the same USB hub.<br />

Under <strong>Windows</strong> <strong>CE</strong> this function is not supported.<br />

34 <strong>USBIO</strong> <strong>Driver</strong> <strong>for</strong> <strong>Windows</strong> <strong>CE</strong>

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