PSEventCallback

static void PSEventCallback(DescriptorEventID event, PIActionDescriptor inputDesc, PIDialogRecordOptions options, void *data)
{
    debugOut("Event: %s", PIUIDToChar(event));
    unsigned int descCount = 0;
    SPErr err = 0;
    if ((err = sPSActionDescriptor->GetCount(inputDesc, &descCount)))
    {
        debugOutError("sPSActionDescriptor->GetCount() returned %d", err);
        return;
    }

    for (unsigned int c = 0; c < descCount; ++c)
    {
        // get the key for this item
        DescriptorKeyID thisKeyID;
        if ((err = sPSActionDescriptor->GetKey(inputDesc, c, &thisKeyID)))
        {
            debugOutError("sPSActionDescriptor->GetKey() returned %d", err);
            continue;
        }

        // get the type for this key
        DescriptorTypeID typeID;
        if ((err = sPSActionDescriptor->GetType(inputDesc, thisKeyID, &typeID)))
        {
            debugOutError("sPSActionDescriptor->GetType() returned %d", err);
            continue;
        }
        debugOut("typeID: %d", typeID);
        if (typeID != typeObjectSpecifier)
            continue;

        // Pull the info
        PIActionReference refValue = 0;
        if ((err = sPSActionDescriptor->GetReference(inputDesc, thisKeyID, &refValue)))
        {
            debugOutError("sPSActionDescriptor->GetReference() returned %d", err);
            continue;
        }
        if (!refValue)
            continue;

        // Get class name
        DescriptorClassID classID;
        if ((err = sPSActionReference->GetDesiredClass(refValue, &classID)))
        {
            debugOutError("sPSActionReference->GetDesiredClass() returned %d", err);
            continue;
        }
        char classStr[255] = { 0 };
        if ((err = sPSActionControl->TypeIDToStringID(classID, classStr, 255)))
        {
            debugOutError("sPSActionControl->TypeIDToStringID() returned %d", err);
            continue;
            }
        if (strstr(classStr, "Tool"))
            sendToolToPlugin(classStr);
    }
}