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Parallel port and MFC

Posted on 2000-04-20
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Last Modified: 2013-11-20
How can I use paralel port with MFC, or API.
Note: I don't want to send to printer, I want to send data through parallel port to a device made by me.
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Question by:Razvan
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Expert Comment

by:b_samrat
ID: 2737293
hi
You can use CreateFile to get a handle
to the LPT1(parallel port),and use Writefile and ReadFile to send or recive data to or from the device.


m_hComm = CreateFile(LPT1,                       GENERIC_READ |GNERIC_WRITE,           0,NULL,OPEN_EXISTING,                 OPEN_EXISTING
           0,0);


Best Luck
Samrat
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Accepted Solution

by:
b_samrat earned 50 total points
ID: 2737352
hi
You can use CreateFile to get a handle
to the LPT1(parallel port),and use Writefile and ReadFile to send or recive data to or from the device.


m_hComm = CreateFile(LPT1,        GENERIC_READ |GNERIC_WRITE,      0,NULL,OPEN_EXISTING,      OPEN_EXISTING
     0,0);

ReadFile(m_hComm,
(void*)m_pstrReadBuffer,//RX Buffer Pointer
INBUFSIZE,//Size of Buffer
&BytesRead,//no. of bytes
NULL);

bResult = WriteFile(m_hComm,
m_pstrWriteBuffer,  //TX Bufferpointer
OUTBUFSIZE, //Size of Buffer
 &dwLength,//no. of bytes writen
NULL);          


Samrat


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