Therefore, you should use a manual reset event; if you use an auto-reset event, your application can stop responding if you wait for the operation to complete and then call GetOverlappedResult with the bWait parameter set to TRUE. Any unused members of this structure should always be initialized to zero before the structure is used in a function call. The Offset and OffsetHigh members together represent a bit file position.
It is a byte offset from the start of the file or file-like device, and it is specified by the user; the system will not modify these values. You should use a separate structure for each request. You should also create an event object for each thread that processes data.
If you store the event handles in an array, you could easily wait for all events to be signaled using the WaitForMultipleObjects function. Synchronization and Overlapped Input and Output. Skip to main content. And with Win10 you need to be very specific with which version is on your system and what system you have it installed on if you find out the issue is with Win10 or drivers on Win10 for USB to Serial device. Also see Windows 10 and serial communication where the person put Win10 on a system which doesn't support Win10 but regardless of that appears to have created some workaround to clear buffers and such with serial com to stop invalid data somehow.
Hi Shwetha s ,. Did you set c orrect baud rate for the serial device? So I am not sure whether you will get the data from correct COM port. Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread.
Sometimes i get correct data and sometimes i get it junk. The same thing works consistently with windows 7. For junk data that is garbled? Could be a problem with the 3rd party driver. Ask a question. Quick access. The same way we can store the destination file handle. Here it is expected that the file does not exist in the destination folder and we always try to create the file as a new file in the location specified.
Therefore, the tag always creates the file and gives back the handle. Once the call succeeded, we will get the read content in the buffer variable. When the file content is over bytes, we will read its content in batches by making use of the loop. This means in each batch, we will read or less That will be last read. Say, for example, the file has bytes of data, and the first read batch will read all bytes and next batch will read the remaining 5 bytes in the next iteration.
Then we display a message stating the content of the file copied to the target location. Below given video shows how the sample perform the file copy operation using the Win32 API Functions:. This site uses Akismet to reduce spam. Learn how your comment data is processed. Skip to content Win32 CreateFile Example. About Win32 File Copy Example 3.
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