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分享十万火急，请问为什么我用CreateFile打开串口做多只能到COM9，超过COM10就出错？
请问高手，为什么我用CreateFile打开串口做多只能到COM9，超过COM10就出错？
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happyct 2006-05-11
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How do I open COM10 or higher under Windows XP?
To open a COM port greater than or equal to COM10, you have to prefix the string "\\.\" to the COM port name.
In C it would look like this:
CreateFile( "\\\\.\\COM10",...)
because you have to escape the "\" character.
To open a COM port greater than or equal to COM10, you have to prefix the string "\\.\" to the COM port name.
In C it would look like this:
CreateFile( "\\\\.\\COM10",...)
because you have to escape the "\" character.
