The oncomm event can also check and handle communication errors. In these cases, you can use the oncomm event of the MSComm control to capture and process these communication events. For example, the serial Receive Buffer contains characters, or the carrier detect (CD) or request to send (RTS) when a character arrives online or a change occurs.
In many cases, you need to be notified when an event occurs. The MSComm control provides two communication methods: event-driven and query.Įvent-driven communication is a very effective method for handling serial port interactions. Specifically, it provides two methods to deal with communication problems: the event-driven method and the query method. It provides an easy way for applications to send and receive data through a serial interface. Microsoft Communications Control (MSComm) is an ActiveX control provided by Microsoft to simplify serial communication programming in windows. programmers do not have to spend time learning more complex API functions and can use them in VC, VB, Delphi, and other languages. MSComm controls are very convenient for serial programming. The MSComm control transmits and receives data through the serial port to provide the serial communication function for applications. Original article address: petabytes of serial programming materials (translated) Author: notbig
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