IOCTL_SERIAL_CLR_DTR (Windows CE 5.0)
This IOCTL sets the Data Terminal Ready (DTR) signal to low. It is used by the COM_IOControl function. The DeviceIoControl function executes this IOCTL.
Parameters
- dwOpenData
[in] Handle returned from a call to the COM_Open function. - dwCode
[in] Set to this IOCTL: IOCTL_SERIAL_CLR_DTR. - pBufIn
Ignored. - dwLenIn
Ignored. - pBufOut
Ignored. - dwLenOut
Ignored. - pdwActualOut
Ignored.
Return Values
Returns TRUE if successful. Returns FALSE otherwise. To get extended error information, call GetLastError.
Requirements
OS Versions: Windows CE 1.0 and later.
Header: Pegdser.h.
See Also
COM_IOControl | COM_Open | DeviceIoControl | IOCTL_SERIAL_SET_DTR
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