Microsoft KB Archive/103636
BUG: EV_RLSDS Event Does Not Indicate Current RLSD State
The information in this article applies to:
- Microsoft Windows Software Development Kit (SDK) 3.1
The EV_RLSDS communications event is documented as indicating the current state of the RLSD (receive-line-signal-detect or carrier detect). However, this event is never set.
If SetCommEventMask() is used to enable the EV_RLSDS event, when GetCommEventMask() is called, the EV_RLSDS bit will always be 0 (zero).
To get the absolute state of RLSD, use the MSRshadow. For more information, please see the following article in the Microsoft Knowledge Base:
Q101417 Accessing the Modem Status Register (MSR) in Windows
This will not be fixed in the Windows 3.1 COMM.DRV.
Additional query words: buglist3.10 3.10
Issue type :
Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK310
Last Reviewed: November 7, 1999