README.TXT

Communications Demonstration 
 
 
SUMMARY 
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The COMM sample (TTY) is designed to demonstrate using the Win32  
communications functions while maintaining a common code base with  
16-bit Windows code. 
 
MORE INFORMATION 
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The program performs communications using the functions OpenFile, ReadFile,  
SetCommState, SetCommMask, WaitCommEvent, WriteFile, and CloseFile. 
 
The program creates a background thread to watch for COMM receiver events  
and posts a notification message to the main terminal window. Foreground  
character processing is written to the communications port. 
 
Simple TTY character translation is performed and a screen buffer is  
implemented for use as the I/O window. 
 
Overlapped file I/O techniques are demonstrated. 
 
Usage: 
 
The baud rate, data bits, stop bits, parity, port, RTS/CTS handshaking,  
DTR/DSR handshaking, and XON/XOFF handshaking can be changed under the  
Settings menu item. 
 
Once the communications settings are set, the Action menu item can be  
selected to connect or disconnect the program.