说明：部分代码使用于开发测试等，所以下面是用户常见的部分代码

·600 An operation is pending.
·601 The port handle is invalid.
·602 The port is already open.
·603 Caller's buffer is too small.
·604 Wrong information specified.
·605 Cannot set port information.
·606 The port is not connected.
·607 The event is invalid.
·608 The device does not exist.
·609 The device type does not exist.
·610 The buffer is invalid.
·611 The route is not available.
·612 The route is not allocated.
·613 Invalid compression specified.
·614 Out of buffers.
·615 The port was not found.
·616 An asynchronous request is pending.
·617 The port or device is already disconnecting.
·618 The port is not open.
·619 The port is disconnected.
·620 There are no endpoints.
·621 Cannot open the phone book file.
·622 Cannot load the phone book file.
·623 Cannot find the phone book entry.
·624 Cannot write the phone book file.
·625 Invalid information found in the phone book.
·626 Cannot load a string.
·627 Cannot find key.

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