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void OpenPort(LPCTSTR szPortNum) 
{ 
&nbsp; &nbsp; HANDLE hCom = CreateFile(szPortNum, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;GENERIC_READ | GENERIC_WRITE, 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;NULL, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;OPEN_EXISTING, &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;FILE_FLAG_OVERLAPPED, &nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;NULL); &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
} 
 
What parameter should I pass to the above function if I were to open a com port (COM2) ? 
 
I tried something like this : 
 
OpenPort(&quot;Com2&quot;); 
 
but the CreateFile() return an invalid handle. 
 
Thank you! 
 
 

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void OpenPort(LPCTSTR szPortNum)
{
    HANDLE hCom = CreateFile(szPortNum,           
	                    GENERIC_READ | GENERIC_WRITE, 
	                    0,                     
	                    NULL,                  
	                    OPEN_EXISTING,         
	                    FILE_FLAG_OVERLAPPED,  
	                    NULL);                 
}

What parameter should I pass to the above function if I were to open a com port (COM2) ?

I tried something like this :

OpenPort("Com2");

but the CreateFile() return an invalid handle.

Thank you!




Com Port

Software is any set of instructions that directs a computer to perform specific tasks or operations. Computer software consists of programs, libraries and related non-executable data (such as documentation). Computer software is non-tangible, contrasted with computer hardware, which is the physical component of computers. Software written in a machine language is known as "machine code". However, in practice, software is usually written in high-level programming languages than machine language. High-level languages are translated into machine language using a compiler or interpreter or a combination of the two.

Software

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