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How to check COM1 port already open or not
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Hello,
Anybody can give me idea, How can i check COM port? I want to check, is it already open or not? if it is already open, just avoid to open the port.
Thanks.
Anybody can give me idea, How can i check COM port? I want to check, is it already open or not? if it is already open, just avoid to open the port.
Thanks.
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Join Date: Aug 2005
Posts: 15,389
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Solved Threads: 1466
Just try to open it -- if open files then its probably already opened (assuming COM1 exists and there are no hardware problems)
Don't PM me with questions -- you might get a nasty PM in response. If you have a question then post it in one of the forums.
My problem is not exactly that. I have another software that run semultaniously. The software also can open the COM1 port. If it opened, my program do not need to open COM1 port. Then Just i want to read data from the port.
If the COM1 port is in use by an other process, this resource is locked by the OS and subsequent tries to open the COM1 port will fail.
If you are forced to reinvent the wheel at least try to invent a better one!
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