TransmitCommChar
A version of this page is also available for
4/8/2010
This function transmits a specified character ahead of any pending data in the output buffer of the specified communications device.
Syntax
BOOL TransmitCommChar(
HANDLE hFile,
char cChar
);
Parameters
- hFile
[in] Handle to the communications device returned by the CreateFile function.
- cChar
[in] Specifies the character to be transmitted.
Return Value
Nonzero indicates success. Zero indicates failure. To obtain extended error information, call the GetLastError function.
Remarks
The TransmitCommChar function is useful for sending an interrupt character (such as a CTRL+C) to a host system.
If the device is not transmitting, TransmitCommChar cannot be called repeatedly.
After TransmitCommChar places a character in the output buffer, the character must be transmitted before the function can be called again.
If the previous character has not been sent, TransmitCommChar returns an error.
Requirements
| Header | winbase.h |
| Library | Serdev.lib |
| Windows Embedded CE | Windows CE 1.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
See Also
Reference
Serial Communications Functions
WaitCommEvent